* [PATCH 08/12] ARM: dts: armada-38x: use reworked NAND controller driver
From: Miquel Raynal @ 2017-12-07 20:18 UTC (permalink / raw)
To: David Woodhouse, Brian Norris, Boris Brezillon, Marek Vasut,
Richard Weinberger, Cyrille Pitchen, Rob Herring, Mark Rutland,
Jason Cooper, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth,
Russell King, Daniel Mack, Haojian Zhuang, Robert Jarzmik,
Eric Miao, Catalin Marinas
Cc: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Thomas Petazzoni, Antoine Tenart, Nadav Haklai, Miquel Raynal,
Ofer Heifetz, Hanna Hawa, Neta Zur Hershkovits
In-Reply-To: <20171207201814.30411-1-miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Use the new bindings of the reworked Marvell NAND controller driver.
Also adapt the nand controller node organization to distinguish which
property is relevant for the controller, and which one is NAND chip
specific. Expose the partitions as a subnode of the NAND chip.
Remove the 'marvell,nand-enable-arbiter' property, not needed anymore as
the driver activates the arbiter by default for all boards (either
needed or harmless).
Signed-off-by: Miquel Raynal <miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
---
arch/arm/boot/dts/armada-385-db-ap.dts | 69 ++++++------
arch/arm/boot/dts/armada-385-linksys-caiman.dts | 129 +++++++++++-----------
arch/arm/boot/dts/armada-385-linksys-cobra.dts | 129 +++++++++++-----------
arch/arm/boot/dts/armada-385-linksys-rango.dts | 141 ++++++++++++------------
arch/arm/boot/dts/armada-385-linksys-shelby.dts | 129 +++++++++++-----------
arch/arm/boot/dts/armada-385-linksys.dtsi | 16 ++-
arch/arm/boot/dts/armada-388-db.dts | 55 +++++----
arch/arm/boot/dts/armada-38x.dtsi | 6 +-
8 files changed, 356 insertions(+), 318 deletions(-)
diff --git a/arch/arm/boot/dts/armada-385-db-ap.dts b/arch/arm/boot/dts/armada-385-db-ap.dts
index 25d2d720dc0e..c741708dabdb 100644
--- a/arch/arm/boot/dts/armada-385-db-ap.dts
+++ b/arch/arm/boot/dts/armada-385-db-ap.dts
@@ -166,39 +166,6 @@
status = "okay";
};
- nfc: flash@d0000 {
- status = "okay";
- num-cs = <1>;
- nand-ecc-strength = <4>;
- nand-ecc-step-size = <512>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
-
- partitions {
- compatible = "fixed-partitions";
- #address-cells = <1>;
- #size-cells = <1>;
-
- partition@0 {
- label = "U-Boot";
- reg = <0x00000000 0x00800000>;
- read-only;
- };
-
- partition@800000 {
- label = "uImage";
- reg = <0x00800000 0x00400000>;
- read-only;
- };
-
- partition@c00000 {
- label = "Root";
- reg = <0x00c00000 0x3f400000>;
- };
- };
- };
-
usb3@f0000 {
status = "okay";
usb-phy = <&usb3_phy>;
@@ -263,3 +230,39 @@
spi-max-frequency = <54000000>;
};
};
+
+&nand_controller {
+ status = "okay";
+
+ nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ nand-on-flash-bbt;
+ nand-ecc-strength = <4>;
+ nand-ecc-step-size = <512>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "U-Boot";
+ reg = <0x00000000 0x00800000>;
+ read-only;
+ };
+
+ partition@800000 {
+ label = "uImage";
+ reg = <0x00800000 0x00400000>;
+ read-only;
+ };
+
+ partition@c00000 {
+ label = "Root";
+ reg = <0x00c00000 0x3f400000>;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/armada-385-linksys-caiman.dts b/arch/arm/boot/dts/armada-385-linksys-caiman.dts
index ee669ae61011..e769bcf7a9d1 100644
--- a/arch/arm/boot/dts/armada-385-linksys-caiman.dts
+++ b/arch/arm/boot/dts/armada-385-linksys-caiman.dts
@@ -105,67 +105,72 @@
&nand {
/* 128MiB */
-
- partition@0 {
- label = "u-boot";
- reg = <0x0000000 0x200000>; /* 2MiB */
- read-only;
- };
-
- partition@100000 {
- label = "u_env";
- reg = <0x200000 0x40000>; /* 256KiB */
- };
-
- partition@140000 {
- label = "s_env";
- reg = <0x240000 0x40000>; /* 256KiB */
- };
-
- partition@900000 {
- label = "devinfo";
- reg = <0x900000 0x100000>; /* 1MiB */
- read-only;
- };
-
- /* kernel1 overlaps with rootfs1 by design */
- partition@a00000 {
- label = "kernel1";
- reg = <0xa00000 0x2800000>; /* 40MiB */
- };
-
- partition@1000000 {
- label = "rootfs1";
- reg = <0x1000000 0x2200000>; /* 34MiB */
- };
-
- /* kernel2 overlaps with rootfs2 by design */
- partition@3200000 {
- label = "kernel2";
- reg = <0x3200000 0x2800000>; /* 40MiB */
- };
-
- partition@3800000 {
- label = "rootfs2";
- reg = <0x3800000 0x2200000>; /* 34MiB */
- };
-
- /*
- * 38MiB, last MiB is for the BBT, not writable
- */
- partition@5a00000 {
- label = "syscfg";
- reg = <0x5a00000 0x2600000>;
- };
-
- /*
- * Unused area between "s_env" and "devinfo".
- * Moved here because otherwise the renumbered
- * partitions would break the bootloader
- * supplied bootargs
- */
- partition@180000 {
- label = "unused_area";
- reg = <0x280000 0x680000>; /* 6.5MiB */
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "u-boot";
+ reg = <0x0000000 0x200000>; /* 2MiB */
+ read-only;
+ };
+
+ partition@100000 {
+ label = "u_env";
+ reg = <0x200000 0x40000>; /* 256KiB */
+ };
+
+ partition@140000 {
+ label = "s_env";
+ reg = <0x240000 0x40000>; /* 256KiB */
+ };
+
+ partition@900000 {
+ label = "devinfo";
+ reg = <0x900000 0x100000>; /* 1MiB */
+ read-only;
+ };
+
+ /* kernel1 overlaps with rootfs1 by design */
+ partition@a00000 {
+ label = "kernel1";
+ reg = <0xa00000 0x2800000>; /* 40MiB */
+ };
+
+ partition@1000000 {
+ label = "rootfs1";
+ reg = <0x1000000 0x2200000>; /* 34MiB */
+ };
+
+ /* kernel2 overlaps with rootfs2 by design */
+ partition@3200000 {
+ label = "kernel2";
+ reg = <0x3200000 0x2800000>; /* 40MiB */
+ };
+
+ partition@3800000 {
+ label = "rootfs2";
+ reg = <0x3800000 0x2200000>; /* 34MiB */
+ };
+
+ /*
+ * 38MiB, last MiB is for the BBT, not writable
+ */
+ partition@5a00000 {
+ label = "syscfg";
+ reg = <0x5a00000 0x2600000>;
+ };
+
+ /*
+ * Unused area between "s_env" and "devinfo".
+ * Moved here because otherwise the renumbered
+ * partitions would break the bootloader
+ * supplied bootargs
+ */
+ partition@180000 {
+ label = "unused_area";
+ reg = <0x280000 0x680000>; /* 6.5MiB */
+ };
};
};
diff --git a/arch/arm/boot/dts/armada-385-linksys-cobra.dts b/arch/arm/boot/dts/armada-385-linksys-cobra.dts
index 5169ca89c55a..690be217838c 100644
--- a/arch/arm/boot/dts/armada-385-linksys-cobra.dts
+++ b/arch/arm/boot/dts/armada-385-linksys-cobra.dts
@@ -105,67 +105,72 @@
&nand {
/* 128MiB */
-
- partition@0 {
- label = "u-boot";
- reg = <0x0000000 0x200000>; /* 2MiB */
- read-only;
- };
-
- partition@100000 {
- label = "u_env";
- reg = <0x200000 0x40000>; /* 256KiB */
- };
-
- partition@140000 {
- label = "s_env";
- reg = <0x240000 0x40000>; /* 256KiB */
- };
-
- partition@900000 {
- label = "devinfo";
- reg = <0x900000 0x100000>; /* 1MiB */
- read-only;
- };
-
- /* kernel1 overlaps with rootfs1 by design */
- partition@a00000 {
- label = "kernel1";
- reg = <0xa00000 0x2800000>; /* 40MiB */
- };
-
- partition@1000000 {
- label = "rootfs1";
- reg = <0x1000000 0x2200000>; /* 34MiB */
- };
-
- /* kernel2 overlaps with rootfs2 by design */
- partition@3200000 {
- label = "kernel2";
- reg = <0x3200000 0x2800000>; /* 40MiB */
- };
-
- partition@3800000 {
- label = "rootfs2";
- reg = <0x3800000 0x2200000>; /* 34MiB */
- };
-
- /*
- * 38MiB, last MiB is for the BBT, not writable
- */
- partition@5a00000 {
- label = "syscfg";
- reg = <0x5a00000 0x2600000>;
- };
-
- /*
- * Unused area between "s_env" and "devinfo".
- * Moved here because otherwise the renumbered
- * partitions would break the bootloader
- * supplied bootargs
- */
- partition@180000 {
- label = "unused_area";
- reg = <0x280000 0x680000>; /* 6.5MiB */
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "u-boot";
+ reg = <0x0000000 0x200000>; /* 2MiB */
+ read-only;
+ };
+
+ partition@100000 {
+ label = "u_env";
+ reg = <0x200000 0x40000>; /* 256KiB */
+ };
+
+ partition@140000 {
+ label = "s_env";
+ reg = <0x240000 0x40000>; /* 256KiB */
+ };
+
+ partition@900000 {
+ label = "devinfo";
+ reg = <0x900000 0x100000>; /* 1MiB */
+ read-only;
+ };
+
+ /* kernel1 overlaps with rootfs1 by design */
+ partition@a00000 {
+ label = "kernel1";
+ reg = <0xa00000 0x2800000>; /* 40MiB */
+ };
+
+ partition@1000000 {
+ label = "rootfs1";
+ reg = <0x1000000 0x2200000>; /* 34MiB */
+ };
+
+ /* kernel2 overlaps with rootfs2 by design */
+ partition@3200000 {
+ label = "kernel2";
+ reg = <0x3200000 0x2800000>; /* 40MiB */
+ };
+
+ partition@3800000 {
+ label = "rootfs2";
+ reg = <0x3800000 0x2200000>; /* 34MiB */
+ };
+
+ /*
+ * 38MiB, last MiB is for the BBT, not writable
+ */
+ partition@5a00000 {
+ label = "syscfg";
+ reg = <0x5a00000 0x2600000>;
+ };
+
+ /*
+ * Unused area between "s_env" and "devinfo".
+ * Moved here because otherwise the renumbered
+ * partitions would break the bootloader
+ * supplied bootargs
+ */
+ partition@180000 {
+ label = "unused_area";
+ reg = <0x280000 0x680000>; /* 6.5MiB */
+ };
};
};
diff --git a/arch/arm/boot/dts/armada-385-linksys-rango.dts b/arch/arm/boot/dts/armada-385-linksys-rango.dts
index da8a0f3d432b..93570c6bfe85 100644
--- a/arch/arm/boot/dts/armada-385-linksys-rango.dts
+++ b/arch/arm/boot/dts/armada-385-linksys-rango.dts
@@ -113,74 +113,79 @@
&nand {
/* AMD/Spansion S34ML02G2 256MiB, OEM Layout */
-
- partition@0 {
- label = "u-boot";
- reg = <0x0000000 0x200000>; /* 2MiB */
- read-only;
- };
-
- partition@200000 {
- label = "u_env";
- reg = <0x200000 0x20000>; /* 128KiB */
- };
-
- partition@220000 {
- label = "s_env";
- reg = <0x220000 0x40000>; /* 256KiB */
- };
-
- partition@7e0000 {
- label = "devinfo";
- reg = <0x7e0000 0x40000>; /* 256KiB */
- read-only;
- };
-
- partition@820000 {
- label = "sysdiag";
- reg = <0x820000 0x1e0000>; /* 1920KiB */
- read-only;
- };
-
- /* kernel1 overlaps with rootfs1 by design */
- partition@a00000 {
- label = "kernel1";
- reg = <0xa00000 0x5000000>; /* 80MiB */
- };
-
- partition@1000000 {
- label = "rootfs1";
- reg = <0x1000000 0x4a00000>; /* 74MiB */
- };
-
- /* kernel2 overlaps with rootfs2 by design */
- partition@5a00000 {
- label = "kernel2";
- reg = <0x5a00000 0x5000000>; /* 80MiB */
- };
-
- partition@6000000 {
- label = "rootfs2";
- reg = <0x6000000 0x4a00000>; /* 74MiB */
- };
-
- /*
- * 86MiB, last MiB is for the BBT, not writable
- */
- partition@aa00000 {
- label = "syscfg";
- reg = <0xaa00000 0x5600000>;
- };
-
- /*
- * Unused area between "s_env" and "devinfo".
- * Moved here because otherwise the renumbered
- * partitions would break the bootloader
- * supplied bootargs
- */
- partition@180000 {
- label = "unused_area";
- reg = <0x260000 0x5c0000>; /* 5.75MiB */
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "u-boot";
+ reg = <0x0000000 0x200000>; /* 2MiB */
+ read-only;
+ };
+
+ partition@200000 {
+ label = "u_env";
+ reg = <0x200000 0x20000>; /* 128KiB */
+ };
+
+ partition@220000 {
+ label = "s_env";
+ reg = <0x220000 0x40000>; /* 256KiB */
+ };
+
+ partition@7e0000 {
+ label = "devinfo";
+ reg = <0x7e0000 0x40000>; /* 256KiB */
+ read-only;
+ };
+
+ partition@820000 {
+ label = "sysdiag";
+ reg = <0x820000 0x1e0000>; /* 1920KiB */
+ read-only;
+ };
+
+ /* kernel1 overlaps with rootfs1 by design */
+ partition@a00000 {
+ label = "kernel1";
+ reg = <0xa00000 0x5000000>; /* 80MiB */
+ };
+
+ partition@1000000 {
+ label = "rootfs1";
+ reg = <0x1000000 0x4a00000>; /* 74MiB */
+ };
+
+ /* kernel2 overlaps with rootfs2 by design */
+ partition@5a00000 {
+ label = "kernel2";
+ reg = <0x5a00000 0x5000000>; /* 80MiB */
+ };
+
+ partition@6000000 {
+ label = "rootfs2";
+ reg = <0x6000000 0x4a00000>; /* 74MiB */
+ };
+
+ /*
+ * 86MiB, last MiB is for the BBT, not writable
+ */
+ partition@aa00000 {
+ label = "syscfg";
+ reg = <0xaa00000 0x5600000>;
+ };
+
+ /*
+ * Unused area between "s_env" and "devinfo".
+ * Moved here because otherwise the renumbered
+ * partitions would break the bootloader
+ * supplied bootargs
+ */
+ partition@180000 {
+ label = "unused_area";
+ reg = <0x260000 0x5c0000>; /* 5.75MiB */
+ };
};
};
diff --git a/arch/arm/boot/dts/armada-385-linksys-shelby.dts b/arch/arm/boot/dts/armada-385-linksys-shelby.dts
index 94aa35bc0bff..4694556700ff 100644
--- a/arch/arm/boot/dts/armada-385-linksys-shelby.dts
+++ b/arch/arm/boot/dts/armada-385-linksys-shelby.dts
@@ -105,67 +105,72 @@
&nand {
/* 128MiB */
-
- partition@0 {
- label = "u-boot";
- reg = <0x0000000 0x200000>; /* 2MiB */
- read-only;
- };
-
- partition@100000 {
- label = "u_env";
- reg = <0x200000 0x40000>; /* 256KiB */
- };
-
- partition@140000 {
- label = "s_env";
- reg = <0x240000 0x40000>; /* 256KiB */
- };
-
- partition@900000 {
- label = "devinfo";
- reg = <0x900000 0x100000>; /* 1MiB */
- read-only;
- };
-
- /* kernel1 overlaps with rootfs1 by design */
- partition@a00000 {
- label = "kernel1";
- reg = <0xa00000 0x2800000>; /* 40MiB */
- };
-
- partition@1000000 {
- label = "rootfs1";
- reg = <0x1000000 0x2200000>; /* 34MiB */
- };
-
- /* kernel2 overlaps with rootfs2 by design */
- partition@3200000 {
- label = "kernel2";
- reg = <0x3200000 0x2800000>; /* 40MiB */
- };
-
- partition@3800000 {
- label = "rootfs2";
- reg = <0x3800000 0x2200000>; /* 34MiB */
- };
-
- /*
- * 38MiB, last MiB is for the BBT, not writable
- */
- partition@5a00000 {
- label = "syscfg";
- reg = <0x5a00000 0x2600000>;
- };
-
- /*
- * Unused area between "s_env" and "devinfo".
- * Moved here because otherwise the renumbered
- * partitions would break the bootloader
- * supplied bootargs
- */
- partition@180000 {
- label = "unused_area";
- reg = <0x280000 0x680000>; /* 6.5MiB */
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "u-boot";
+ reg = <0x0000000 0x200000>; /* 2MiB */
+ read-only;
+ };
+
+ partition@100000 {
+ label = "u_env";
+ reg = <0x200000 0x40000>; /* 256KiB */
+ };
+
+ partition@140000 {
+ label = "s_env";
+ reg = <0x240000 0x40000>; /* 256KiB */
+ };
+
+ partition@900000 {
+ label = "devinfo";
+ reg = <0x900000 0x100000>; /* 1MiB */
+ read-only;
+ };
+
+ /* kernel1 overlaps with rootfs1 by design */
+ partition@a00000 {
+ label = "kernel1";
+ reg = <0xa00000 0x2800000>; /* 40MiB */
+ };
+
+ partition@1000000 {
+ label = "rootfs1";
+ reg = <0x1000000 0x2200000>; /* 34MiB */
+ };
+
+ /* kernel2 overlaps with rootfs2 by design */
+ partition@3200000 {
+ label = "kernel2";
+ reg = <0x3200000 0x2800000>; /* 40MiB */
+ };
+
+ partition@3800000 {
+ label = "rootfs2";
+ reg = <0x3800000 0x2200000>; /* 34MiB */
+ };
+
+ /*
+ * 38MiB, last MiB is for the BBT, not writable
+ */
+ partition@5a00000 {
+ label = "syscfg";
+ reg = <0x5a00000 0x2600000>;
+ };
+
+ /*
+ * Unused area between "s_env" and "devinfo".
+ * Moved here because otherwise the renumbered
+ * partitions would break the bootloader
+ * supplied bootargs
+ */
+ partition@180000 {
+ label = "unused_area";
+ reg = <0x280000 0x680000>; /* 6.5MiB */
+ };
};
};
diff --git a/arch/arm/boot/dts/armada-385-linksys.dtsi b/arch/arm/boot/dts/armada-385-linksys.dtsi
index e1f355ffc8f7..214630b06f0e 100644
--- a/arch/arm/boot/dts/armada-385-linksys.dtsi
+++ b/arch/arm/boot/dts/armada-385-linksys.dtsi
@@ -169,13 +169,19 @@
};
};
-&nand {
+&nand_controller {
/* 128MiB or 256MiB */
status = "okay";
- num-cs = <1>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ nand: nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+ };
};
&mdio {
diff --git a/arch/arm/boot/dts/armada-388-db.dts b/arch/arm/boot/dts/armada-388-db.dts
index a4ec1fa37529..61bfed5adaaa 100644
--- a/arch/arm/boot/dts/armada-388-db.dts
+++ b/arch/arm/boot/dts/armada-388-db.dts
@@ -128,29 +128,6 @@
status = "okay";
};
- flash@d0000 {
- status = "okay";
- num-cs = <1>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
- nand-ecc-strength = <4>;
- nand-ecc-step-size = <512>;
-
- partition@0 {
- label = "U-Boot";
- reg = <0 0x800000>;
- };
- partition@800000 {
- label = "Linux";
- reg = <0x800000 0x800000>;
- };
- partition@1000000 {
- label = "Filesystem";
- reg = <0x1000000 0x3f000000>;
- };
- };
-
sdhci@d8000 {
broken-cd;
wp-inverted;
@@ -202,3 +179,35 @@
};
};
+&nand_controller {
+ status = "okay";
+
+ nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+ nand-ecc-strength = <4>;
+ nand-ecc-step-size = <512>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "U-Boot";
+ reg = <0 0x800000>;
+ };
+ partition@800000 {
+ label = "Linux";
+ reg = <0x800000 0x800000>;
+ };
+ partition@1000000 {
+ label = "Filesystem";
+ reg = <0x1000000 0x3f000000>;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi
index 00ff549d4e39..28669188f69d 100644
--- a/arch/arm/boot/dts/armada-38x.dtsi
+++ b/arch/arm/boot/dts/armada-38x.dtsi
@@ -583,11 +583,11 @@
status = "okay";
};
- nand: flash@d0000 {
- compatible = "marvell,armada370-nand";
+ nand_controller: nand-controller@d0000 {
+ compatible = "marvell,armada370-nand-controller";
reg = <0xd0000 0x54>;
#address-cells = <1>;
- #size-cells = <1>;
+ #size-cells = <0>;
interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&coredivclk 0>;
status = "disabled";
--
2.11.0
--
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^ permalink raw reply related
* [PATCH 07/12] ARM: dts: armada-375: use reworked NAND controller driver
From: Miquel Raynal @ 2017-12-07 20:18 UTC (permalink / raw)
To: David Woodhouse, Brian Norris, Boris Brezillon, Marek Vasut,
Richard Weinberger, Cyrille Pitchen, Rob Herring, Mark Rutland,
Jason Cooper, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth,
Russell King, Daniel Mack, Haojian Zhuang, Robert Jarzmik,
Eric Miao, Catalin Marinas
Cc: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Thomas Petazzoni, Antoine Tenart, Nadav Haklai, Miquel Raynal,
Ofer Heifetz, Hanna Hawa, Neta Zur Hershkovits
In-Reply-To: <20171207201814.30411-1-miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Use the new bindings of the reworked Marvell NAND controller driver.
Also adapt the nand controller node organization to distinguish which
property is relevant for the controller, and which one is NAND chip
specific. Expose the partitions as a subnode of the NAND chip.
Remove the 'marvell,nand-enable-arbiter' property, not needed anymore
as the driver activates the arbiter by default for all boards (either
needed or harmless).
Signed-off-by: Miquel Raynal <miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
---
arch/arm/boot/dts/armada-375-db.dts | 50 ++++++++++++++++++++++---------------
arch/arm/boot/dts/armada-375.dtsi | 6 ++---
2 files changed, 33 insertions(+), 23 deletions(-)
diff --git a/arch/arm/boot/dts/armada-375-db.dts b/arch/arm/boot/dts/armada-375-db.dts
index bcdbb8ba1d65..d33cca4e315d 100644
--- a/arch/arm/boot/dts/armada-375-db.dts
+++ b/arch/arm/boot/dts/armada-375-db.dts
@@ -140,28 +140,38 @@
nr-ports = <2>;
};
-&nand {
+&nand_controller {
+ status = "okay";
pinctrl-0 = <&nand_pins>;
pinctrl-names = "default";
- status = "okay";
- num-cs = <1>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
- nand-ecc-strength = <4>;
- nand-ecc-step-size = <512>;
-
- partition@0 {
- label = "U-Boot";
- reg = <0 0x800000>;
- };
- partition@800000 {
- label = "Linux";
- reg = <0x800000 0x800000>;
- };
- partition@1000000 {
- label = "Filesystem";
- reg = <0x1000000 0x3f000000>;
+
+ nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+ nand-ecc-strength = <4>;
+ nand-ecc-step-size = <512>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "U-Boot";
+ reg = <0 0x800000>;
+ };
+ partition@800000 {
+ label = "Linux";
+ reg = <0x800000 0x800000>;
+ };
+ partition@1000000 {
+ label = "Filesystem";
+ reg = <0x1000000 0x3f000000>;
+ };
+ };
};
};
diff --git a/arch/arm/boot/dts/armada-375.dtsi b/arch/arm/boot/dts/armada-375.dtsi
index 2cb1bcd30976..46471173c7c1 100644
--- a/arch/arm/boot/dts/armada-375.dtsi
+++ b/arch/arm/boot/dts/armada-375.dtsi
@@ -539,11 +539,11 @@
status = "disabled";
};
- nand: nand@d0000 {
- compatible = "marvell,armada370-nand";
+ nand_controller: nand-controller@d0000 {
+ compatible = "marvell,armada370-nand-controller";
reg = <0xd0000 0x54>;
#address-cells = <1>;
- #size-cells = <1>;
+ #size-cells = <0>;
interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&gateclk 11>;
status = "disabled";
--
2.11.0
--
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^ permalink raw reply related
* [PATCH 06/12] ARM: dts: armada-370-xp: use reworked NAND controller driver
From: Miquel Raynal @ 2017-12-07 20:18 UTC (permalink / raw)
To: David Woodhouse, Brian Norris, Boris Brezillon, Marek Vasut,
Richard Weinberger, Cyrille Pitchen, Rob Herring, Mark Rutland,
Jason Cooper, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth,
Russell King, Daniel Mack, Haojian Zhuang, Robert Jarzmik,
Eric Miao, Catalin Marinas
Cc: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Thomas Petazzoni, Antoine Tenart, Nadav Haklai, Miquel Raynal,
Ofer Heifetz, Hanna Hawa, Neta Zur Hershkovits
In-Reply-To: <20171207201814.30411-1-miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Use the new bindings of the reworked Marvell NAND controller driver.
Also adapt the nand controller node organization to distinguish which
property is relevant for the controller, and which one is NAND chip
specific. Expose the partitions as a subnode of the NAND chip.
Remove the 'marvell,nand-enable-arbiter' property, not needed anymore
as the driver activates the arbiter by default for all boards (either
needed or harmless).
Signed-off-by: Miquel Raynal <miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
---
arch/arm/boot/dts/armada-370-db.dts | 57 ++++----
arch/arm/boot/dts/armada-370-dlink-dns327l.dts | 120 ++++++++--------
arch/arm/boot/dts/armada-370-mirabox.dts | 51 ++++---
arch/arm/boot/dts/armada-370-netgear-rn102.dts | 90 ++++++------
arch/arm/boot/dts/armada-370-netgear-rn104.dts | 90 ++++++------
arch/arm/boot/dts/armada-370-rd.dts | 52 ++++---
arch/arm/boot/dts/armada-370-seagate-nas-xbay.dtsi | 64 +++++----
arch/arm/boot/dts/armada-370-xp.dtsi | 6 +-
arch/arm/boot/dts/armada-xp-db-dxbc2.dts | 2 +-
arch/arm/boot/dts/armada-xp-db-xc3-24g4xg.dts | 2 +-
arch/arm/boot/dts/armada-xp-db.dts | 2 +-
arch/arm/boot/dts/armada-xp-gp.dts | 2 +-
arch/arm/boot/dts/armada-xp-lenovo-ix4-300d.dts | 2 +-
arch/arm/boot/dts/armada-xp-linksys-mamba.dts | 156 +++++++++++----------
arch/arm/boot/dts/armada-xp-netgear-rn2120.dts | 90 ++++++------
15 files changed, 434 insertions(+), 352 deletions(-)
diff --git a/arch/arm/boot/dts/armada-370-db.dts b/arch/arm/boot/dts/armada-370-db.dts
index c4eef7323367..640f87a11834 100644
--- a/arch/arm/boot/dts/armada-370-db.dts
+++ b/arch/arm/boot/dts/armada-370-db.dts
@@ -142,33 +142,6 @@
usb@51000 {
status = "okay";
};
-
- nand@d0000 {
- status = "okay";
- num-cs = <1>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
-
- partitions {
- compatible = "fixed-partitions";
- #address-cells = <1>;
- #size-cells = <1>;
-
- partition@0 {
- label = "U-Boot";
- reg = <0 0x800000>;
- };
- partition@800000 {
- label = "Linux";
- reg = <0x800000 0x800000>;
- };
- partition@1000000 {
- label = "Filesystem";
- reg = <0x1000000 0x3f000000>;
- };
- };
- };
};
};
@@ -276,3 +249,33 @@
};
};
+&nand_controller {
+ status = "okay";
+
+ nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "U-Boot";
+ reg = <0 0x800000>;
+ };
+ partition@800000 {
+ label = "Linux";
+ reg = <0x800000 0x800000>;
+ };
+ partition@1000000 {
+ label = "Filesystem";
+ reg = <0x1000000 0x3f000000>;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/armada-370-dlink-dns327l.dts b/arch/arm/boot/dts/armada-370-dlink-dns327l.dts
index db7f3aa38670..bb9be4d2b17e 100644
--- a/arch/arm/boot/dts/armada-370-dlink-dns327l.dts
+++ b/arch/arm/boot/dts/armada-370-dlink-dns327l.dts
@@ -81,61 +81,6 @@
usb@50000 {
status = "okay";
};
-
- nand@d0000 {
- status = "okay";
- num-cs = <1>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
- nand-ecc-strength = <4>;
- nand-ecc-step-size = <512>;
-
- partition@0 {
- label = "u-boot";
- /* 1.0 MiB */
- reg = <0x0000000 0x100000>;
- read-only;
- };
-
- partition@100000 {
- label = "u-boot-env";
- /* 128 KiB */
- reg = <0x100000 0x20000>;
- read-only;
- };
-
- partition@120000 {
- label = "uImage";
- /* 7 MiB */
- reg = <0x120000 0x700000>;
- };
-
- partition@820000 {
- label = "ubifs";
- /* ~ 84 MiB */
- reg = <0x820000 0x54e0000>;
- };
-
- /* Hardcoded into stock bootloader */
- partition@5d00000 {
- label = "failsafe-uImage";
- /* 5 MiB */
- reg = <0x5d00000 0x500000>;
- };
-
- partition@6200000 {
- label = "failsafe-fs";
- /* 29 MiB */
- reg = <0x6200000 0x1d00000>;
- };
-
- partition@7f00000 {
- label = "bbt";
- /* 1 MiB for BBT */
- reg = <0x7f00000 0x100000>;
- };
- };
};
};
@@ -356,3 +301,68 @@
clock-frequency = <100000>;
status = "okay";
};
+
+&nand_controller {
+ status = "okay";
+
+ nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+ nand-ecc-strength = <4>;
+ nand-ecc-step-size = <512>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "u-boot";
+ /* 1.0 MiB */
+ reg = <0x0000000 0x100000>;
+ read-only;
+ };
+
+ partition@100000 {
+ label = "u-boot-env";
+ /* 128 KiB */
+ reg = <0x100000 0x20000>;
+ read-only;
+ };
+
+ partition@120000 {
+ label = "uImage";
+ /* 7 MiB */
+ reg = <0x120000 0x700000>;
+ };
+
+ partition@820000 {
+ label = "ubifs";
+ /* ~ 84 MiB */
+ reg = <0x820000 0x54e0000>;
+ };
+
+ /* Hardcoded into stock bootloader */
+ partition@5d00000 {
+ label = "failsafe-uImage";
+ /* 5 MiB */
+ reg = <0x5d00000 0x500000>;
+ };
+
+ partition@6200000 {
+ label = "failsafe-fs";
+ /* 29 MiB */
+ reg = <0x6200000 0x1d00000>;
+ };
+
+ partition@7f00000 {
+ label = "bbt";
+ /* 1 MiB for BBT */
+ reg = <0x7f00000 0x100000>;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/armada-370-mirabox.dts b/arch/arm/boot/dts/armada-370-mirabox.dts
index 702f58c9642d..af4db48ca2eb 100644
--- a/arch/arm/boot/dts/armada-370-mirabox.dts
+++ b/arch/arm/boot/dts/armada-370-mirabox.dts
@@ -145,27 +145,6 @@
reg = <0x25>;
};
};
-
- nand@d0000 {
- status = "okay";
- num-cs = <1>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
-
- partition@0 {
- label = "U-Boot";
- reg = <0 0x400000>;
- };
- partition@400000 {
- label = "Linux";
- reg = <0x400000 0x400000>;
- };
- partition@800000 {
- label = "Filesystem";
- reg = <0x800000 0x3f800000>;
- };
- };
};
};
};
@@ -210,3 +189,33 @@
};
};
+&nand_controller {
+ status = "okay";
+
+ nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "U-Boot";
+ reg = <0 0x400000>;
+ };
+ partition@400000 {
+ label = "Linux";
+ reg = <0x400000 0x400000>;
+ };
+ partition@800000 {
+ label = "Filesystem";
+ reg = <0x800000 0x3f800000>;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/armada-370-netgear-rn102.dts b/arch/arm/boot/dts/armada-370-netgear-rn102.dts
index b1a96e95e921..01bbb7d21cbc 100644
--- a/arch/arm/boot/dts/armada-370-netgear-rn102.dts
+++ b/arch/arm/boot/dts/armada-370-netgear-rn102.dts
@@ -118,46 +118,6 @@
pwm_polarity = <0>;
};
};
-
- nand@d0000 {
- status = "okay";
- num-cs = <1>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
-
- /* Use Hardware BCH ECC */
- nand-ecc-strength = <4>;
- nand-ecc-step-size = <512>;
-
- partition@0 {
- label = "u-boot";
- reg = <0x0000000 0x180000>; /* 1.5MB */
- read-only;
- };
-
- partition@180000 {
- label = "u-boot-env";
- reg = <0x180000 0x20000>; /* 128KB */
- read-only;
- };
-
- partition@200000 {
- label = "uImage";
- reg = <0x0200000 0x600000>; /* 6MB */
- };
-
- partition@800000 {
- label = "minirootfs";
- reg = <0x0800000 0x400000>; /* 4MB */
- };
-
- /* Last MB is for the BBT, i.e. not writable */
- partition@c00000 {
- label = "ubifs";
- reg = <0x0c00000 0x7400000>; /* 116MB */
- };
- };
};
};
@@ -301,3 +261,53 @@
marvell,function = "gpio";
};
};
+
+&nand_controller {
+ status = "okay";
+
+ nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+
+ /* Use Hardware BCH ECC */
+ nand-ecc-strength = <4>;
+ nand-ecc-step-size = <512>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "u-boot";
+ reg = <0x0000000 0x180000>; /* 1.5MB */
+ read-only;
+ };
+
+ partition@180000 {
+ label = "u-boot-env";
+ reg = <0x180000 0x20000>; /* 128KB */
+ read-only;
+ };
+
+ partition@200000 {
+ label = "uImage";
+ reg = <0x0200000 0x600000>; /* 6MB */
+ };
+
+ partition@800000 {
+ label = "minirootfs";
+ reg = <0x0800000 0x400000>; /* 4MB */
+ };
+
+ /* Last MB is for the BBT, i.e. not writable */
+ partition@c00000 {
+ label = "ubifs";
+ reg = <0x0c00000 0x7400000>; /* 116MB */
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/armada-370-netgear-rn104.dts b/arch/arm/boot/dts/armada-370-netgear-rn104.dts
index d67e7aa42b54..725181300575 100644
--- a/arch/arm/boot/dts/armada-370-netgear-rn104.dts
+++ b/arch/arm/boot/dts/armada-370-netgear-rn104.dts
@@ -127,46 +127,6 @@
reg = <0x23>;
};
};
-
- nand@d0000 {
- status = "okay";
- num-cs = <1>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
-
- /* Use Hardware BCH ECC */
- nand-ecc-strength = <4>;
- nand-ecc-step-size = <512>;
-
- partition@0 {
- label = "u-boot";
- reg = <0x0000000 0x180000>; /* 1.5MB */
- read-only;
- };
-
- partition@180000 {
- label = "u-boot-env";
- reg = <0x180000 0x20000>; /* 128KB */
- read-only;
- };
-
- partition@200000 {
- label = "uImage";
- reg = <0x0200000 0x600000>; /* 6MB */
- };
-
- partition@800000 {
- label = "minirootfs";
- reg = <0x0800000 0x400000>; /* 4MB */
- };
-
- /* Last MB is for the BBT, i.e. not writable */
- partition@c00000 {
- label = "ubifs";
- reg = <0x0c00000 0x7400000>; /* 116MB */
- };
- };
};
};
@@ -313,3 +273,53 @@
marvell,function = "gpio";
};
};
+
+&nand_controller {
+ status = "okay";
+
+ nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+
+ /* Use Hardware BCH ECC */
+ nand-ecc-strength = <4>;
+ nand-ecc-step-size = <512>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "u-boot";
+ reg = <0x0000000 0x180000>; /* 1.5MB */
+ read-only;
+ };
+
+ partition@180000 {
+ label = "u-boot-env";
+ reg = <0x180000 0x20000>; /* 128KB */
+ read-only;
+ };
+
+ partition@200000 {
+ label = "uImage";
+ reg = <0x0200000 0x600000>; /* 6MB */
+ };
+
+ partition@800000 {
+ label = "minirootfs";
+ reg = <0x0800000 0x400000>; /* 4MB */
+ };
+
+ /* Last MB is for the BBT, i.e. not writable */
+ partition@c00000 {
+ label = "ubifs";
+ reg = <0x0c00000 0x7400000>; /* 116MB */
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/armada-370-rd.dts b/arch/arm/boot/dts/armada-370-rd.dts
index 8b2fa9a49967..4301867bc973 100644
--- a/arch/arm/boot/dts/armada-370-rd.dts
+++ b/arch/arm/boot/dts/armada-370-rd.dts
@@ -148,27 +148,6 @@
default-state = "keep";
};
};
-
- nand@d0000 {
- status = "okay";
- num-cs = <1>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
-
- partition@0 {
- label = "U-Boot";
- reg = <0 0x800000>;
- };
- partition@800000 {
- label = "Linux";
- reg = <0x800000 0x800000>;
- };
- partition@1000000 {
- label = "Filesystem";
- reg = <0x1000000 0x3f000000>;
- };
- };
};
};
@@ -293,3 +272,34 @@
marvell,function = "gpio";
};
};
+
+&nand_controller {
+ status = "okay";
+
+ nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "U-Boot";
+ reg = <0 0x800000>;
+ };
+ partition@800000 {
+ label = "Linux";
+ reg = <0x800000 0x800000>;
+ };
+ partition@1000000 {
+ label = "Filesystem";
+ reg = <0x1000000 0x3f000000>;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/armada-370-seagate-nas-xbay.dtsi b/arch/arm/boot/dts/armada-370-seagate-nas-xbay.dtsi
index e9a5b952afc0..b13d18fad40a 100644
--- a/arch/arm/boot/dts/armada-370-seagate-nas-xbay.dtsi
+++ b/arch/arm/boot/dts/armada-370-seagate-nas-xbay.dtsi
@@ -69,33 +69,6 @@
interrupts = <110>;
};
};
-
- nand@d0000 {
- status = "okay";
- num-cs = <1>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
- nand-ecc-strength = <4>;
- nand-ecc-step-size = <512>;
-
- partition@0 {
- label = "u-boot";
- reg = <0x0 0x300000>;
- };
- partition@300000 {
- label = "device-tree";
- reg = <0x300000 0x20000>;
- };
- partition@320000 {
- label = "linux";
- reg = <0x320000 0x2000000>;
- };
- partition@2320000 {
- label = "rootfs";
- reg = <0x2320000 0xdce0000>;
- };
- };
};
};
@@ -230,3 +203,40 @@
marvell,function = "gpio";
};
};
+
+&nand_controller {
+ status = "okay";
+
+ nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+ nand-ecc-strength = <4>;
+ nand-ecc-step-size = <512>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "u-boot";
+ reg = <0x0 0x300000>;
+ };
+ partition@300000 {
+ label = "device-tree";
+ reg = <0x300000 0x20000>;
+ };
+ partition@320000 {
+ label = "linux";
+ reg = <0x320000 0x2000000>;
+ };
+ partition@2320000 {
+ label = "rootfs";
+ reg = <0x2320000 0xdce0000>;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/armada-370-xp.dtsi b/arch/arm/boot/dts/armada-370-xp.dtsi
index 09495e87b038..b6bead81c438 100644
--- a/arch/arm/boot/dts/armada-370-xp.dtsi
+++ b/arch/arm/boot/dts/armada-370-xp.dtsi
@@ -281,11 +281,11 @@
status = "disabled";
};
- nand: nand@d0000 {
- compatible = "marvell,armada370-nand";
+ nand_controller: nand-controller@d0000 {
+ compatible = "marvell,armada370-nand-controller";
reg = <0xd0000 0x54>;
#address-cells = <1>;
- #size-cells = <1>;
+ #size-cells = <0>;
interrupts = <113>;
clocks = <&coredivclk 0>;
status = "disabled";
diff --git a/arch/arm/boot/dts/armada-xp-db-dxbc2.dts b/arch/arm/boot/dts/armada-xp-db-dxbc2.dts
index 1b1ff17fdd9c..eb63cc8bcacc 100644
--- a/arch/arm/boot/dts/armada-xp-db-dxbc2.dts
+++ b/arch/arm/boot/dts/armada-xp-db-dxbc2.dts
@@ -107,9 +107,9 @@
&nand {
status = "okay";
+ label = "pxa3xx_nand-0";
num-cs = <1>;
marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
nand-on-flash-bbt;
nand-ecc-strength = <4>;
nand-ecc-step-size = <512>;
diff --git a/arch/arm/boot/dts/armada-xp-db-xc3-24g4xg.dts b/arch/arm/boot/dts/armada-xp-db-xc3-24g4xg.dts
index 06fce35d7491..ee830687c2a8 100644
--- a/arch/arm/boot/dts/armada-xp-db-xc3-24g4xg.dts
+++ b/arch/arm/boot/dts/armada-xp-db-xc3-24g4xg.dts
@@ -106,9 +106,9 @@
&nand {
status = "okay";
+ label = "pxa3xx_nand-0";
num-cs = <1>;
marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
nand-on-flash-bbt;
nand-ecc-strength = <4>;
nand-ecc-step-size = <512>;
diff --git a/arch/arm/boot/dts/armada-xp-db.dts b/arch/arm/boot/dts/armada-xp-db.dts
index 065282c21789..6acf9cd65f5a 100644
--- a/arch/arm/boot/dts/armada-xp-db.dts
+++ b/arch/arm/boot/dts/armada-xp-db.dts
@@ -182,9 +182,9 @@
nand@d0000 {
status = "okay";
+ label = "pxa3xx_nand-0";
num-cs = <1>;
marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
nand-on-flash-bbt;
partitions {
diff --git a/arch/arm/boot/dts/armada-xp-gp.dts b/arch/arm/boot/dts/armada-xp-gp.dts
index ac9eab8ac186..9f3317cd4773 100644
--- a/arch/arm/boot/dts/armada-xp-gp.dts
+++ b/arch/arm/boot/dts/armada-xp-gp.dts
@@ -199,9 +199,9 @@
nand@d0000 {
status = "okay";
+ label = "pxa3xx_nand-0";
num-cs = <1>;
marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
nand-on-flash-bbt;
};
};
diff --git a/arch/arm/boot/dts/armada-xp-lenovo-ix4-300d.dts b/arch/arm/boot/dts/armada-xp-lenovo-ix4-300d.dts
index ce0afba1ce58..398fe027b2a7 100644
--- a/arch/arm/boot/dts/armada-xp-lenovo-ix4-300d.dts
+++ b/arch/arm/boot/dts/armada-xp-lenovo-ix4-300d.dts
@@ -120,9 +120,9 @@
nand@d0000 {
status = "okay";
+ label = "pxa3xx_nand-0";
num-cs = <1>;
marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
nand-on-flash-bbt;
partitions {
diff --git a/arch/arm/boot/dts/armada-xp-linksys-mamba.dts b/arch/arm/boot/dts/armada-xp-linksys-mamba.dts
index 6d705f518254..4c09314a3260 100644
--- a/arch/arm/boot/dts/armada-xp-linksys-mamba.dts
+++ b/arch/arm/boot/dts/armada-xp-linksys-mamba.dts
@@ -196,79 +196,6 @@
bm@c8000 {
status = "okay";
};
-
- nand@d0000 {
- status = "okay";
- num-cs = <1>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
- nand-ecc-strength = <4>;
- nand-ecc-step-size = <512>;
-
- partition@0 {
- label = "u-boot";
- reg = <0x0000000 0x100000>; /* 1MB */
- read-only;
- };
-
- partition@100000 {
- label = "u_env";
- reg = <0x100000 0x40000>; /* 256KB */
- };
-
- partition@140000 {
- label = "s_env";
- reg = <0x140000 0x40000>; /* 256KB */
- };
-
- partition@900000 {
- label = "devinfo";
- reg = <0x900000 0x100000>; /* 1MB */
- read-only;
- };
-
- /* kernel1 overlaps with rootfs1 by design */
- partition@a00000 {
- label = "kernel1";
- reg = <0xa00000 0x2800000>; /* 40MB */
- };
-
- partition@d00000 {
- label = "rootfs1";
- reg = <0xd00000 0x2500000>; /* 37MB */
- };
-
- /* kernel2 overlaps with rootfs2 by design */
- partition@3200000 {
- label = "kernel2";
- reg = <0x3200000 0x2800000>; /* 40MB */
- };
-
- partition@3500000 {
- label = "rootfs2";
- reg = <0x3500000 0x2500000>; /* 37MB */
- };
-
- /*
- * 38MB, last MB is for the BBT, not writable
- */
- partition@5a00000 {
- label = "syscfg";
- reg = <0x5a00000 0x2600000>;
- };
-
- /*
- * Unused area between "s_env" and "devinfo".
- * Moved here because otherwise the renumbered
- * partitions would break the bootloader
- * supplied bootargs
- */
- partition@180000 {
- label = "unused_area";
- reg = <0x180000 0x780000>; /* 7.5MB */
- };
- };
};
bm-bppi {
@@ -465,3 +392,86 @@
};
};
};
+
+&nand_controller {
+ status = "okay";
+
+ nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+ nand-ecc-strength = <4>;
+ nand-ecc-step-size = <512>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "u-boot";
+ reg = <0x0000000 0x100000>; /* 1MB */
+ read-only;
+ };
+
+ partition@100000 {
+ label = "u_env";
+ reg = <0x100000 0x40000>; /* 256KB */
+ };
+
+ partition@140000 {
+ label = "s_env";
+ reg = <0x140000 0x40000>; /* 256KB */
+ };
+
+ partition@900000 {
+ label = "devinfo";
+ reg = <0x900000 0x100000>; /* 1MB */
+ read-only;
+ };
+
+ /* kernel1 overlaps with rootfs1 by design */
+ partition@a00000 {
+ label = "kernel1";
+ reg = <0xa00000 0x2800000>; /* 40MB */
+ };
+
+ partition@d00000 {
+ label = "rootfs1";
+ reg = <0xd00000 0x2500000>; /* 37MB */
+ };
+
+ /* kernel2 overlaps with rootfs2 by design */
+ partition@3200000 {
+ label = "kernel2";
+ reg = <0x3200000 0x2800000>; /* 40MB */
+ };
+
+ partition@3500000 {
+ label = "rootfs2";
+ reg = <0x3500000 0x2500000>; /* 37MB */
+ };
+
+ /*
+ * 38MB, last MB is for the BBT, not writable
+ */
+ partition@5a00000 {
+ label = "syscfg";
+ reg = <0x5a00000 0x2600000>;
+ };
+
+ /*
+ * Unused area between "s_env" and "devinfo".
+ * Moved here because otherwise the renumbered
+ * partitions would break the bootloader
+ * supplied bootargs
+ */
+ partition@180000 {
+ label = "unused_area";
+ reg = <0x180000 0x780000>; /* 7.5MB */
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts b/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
index 40c6fe21e720..e9e4c7a8fba9 100644
--- a/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
+++ b/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
@@ -154,46 +154,6 @@
nr-ports = <2>;
status = "okay";
};
-
- nand@d0000 {
- status = "okay";
- num-cs = <1>;
- marvell,nand-keep-config;
- marvell,nand-enable-arbiter;
- nand-on-flash-bbt;
-
- /* Use Hardware BCH ECC */
- nand-ecc-strength = <4>;
- nand-ecc-step-size = <512>;
-
- partition@0 {
- label = "u-boot";
- reg = <0x0000000 0x180000>; /* 1.5MB */
- read-only;
- };
-
- partition@180000 {
- label = "u-boot-env";
- reg = <0x180000 0x20000>; /* 128KB */
- read-only;
- };
-
- partition@200000 {
- label = "uImage";
- reg = <0x0200000 0x600000>; /* 6MB */
- };
-
- partition@800000 {
- label = "minirootfs";
- reg = <0x0800000 0x400000>; /* 4MB */
- };
-
- /* Last MB is for the BBT, i.e. not writable */
- partition@c00000 {
- label = "ubifs";
- reg = <0x0c00000 0x7400000>; /* 116MB */
- };
- };
};
};
@@ -382,3 +342,53 @@
marvell,function = "gpio";
};
};
+
+&nand_controller {
+ status = "okay";
+
+ nand@0 {
+ reg = <0>;
+ label = "pxa3xx_nand-0";
+ marvell,rb = <0>;
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+
+ /* Use Hardware BCH ECC */
+ nand-ecc-strength = <4>;
+ nand-ecc-step-size = <512>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "u-boot";
+ reg = <0x0000000 0x180000>; /* 1.5MB */
+ read-only;
+ };
+
+ partition@180000 {
+ label = "u-boot-env";
+ reg = <0x180000 0x20000>; /* 128KB */
+ read-only;
+ };
+
+ partition@200000 {
+ label = "uImage";
+ reg = <0x0200000 0x600000>; /* 6MB */
+ };
+
+ partition@800000 {
+ label = "minirootfs";
+ reg = <0x0800000 0x400000>; /* 4MB */
+ };
+
+ /* Last MB is for the BBT, i.e. not writable */
+ partition@c00000 {
+ label = "ubifs";
+ reg = <0x0c00000 0x7400000>; /* 116MB */
+ };
+ };
+ };
+};
--
2.11.0
--
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^ permalink raw reply related
* [PATCH 05/12] mtd: nand: remove useless fields from pxa3xx NAND platform data
From: Miquel Raynal @ 2017-12-07 20:18 UTC (permalink / raw)
To: David Woodhouse, Brian Norris, Boris Brezillon, Marek Vasut,
Richard Weinberger, Cyrille Pitchen, Rob Herring, Mark Rutland,
Jason Cooper, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth,
Russell King, Daniel Mack, Haojian Zhuang, Robert Jarzmik,
Eric Miao, Catalin Marinas
Cc: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Thomas Petazzoni, Antoine Tenart, Nadav Haklai, Miquel Raynal,
Ofer Heifetz, Hanna Hawa, Neta Zur Hershkovits
In-Reply-To: <20171207201814.30411-1-miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
The "enable arbiter" bit is available only for pxa3xx based platforms
but it was experimentally shown that even if this bit is reserved,
some Marvell platforms (64-bit) actually need it to be set. The driver
always set this bit regardless of this property, which is harmless.
Then this property is not needed.
The "num_cs" field is always 1 and for a good reason, the old driver
(pxa3xx_nand.c) could only handle one. The new driver that replaces it
(marvell_nand.c) can handle more, but better use device tree for such
description. As there is only one available chip select, there is no
need for an array of partitions neither an array of partition numbers.
Signed-off-by: Miquel Raynal <miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
---
arch/arm/mach-pxa/cm-x300.c | 6 ++--
arch/arm/mach-pxa/colibri-pxa3xx.c | 6 ++--
arch/arm/mach-pxa/littleton.c | 6 ++--
arch/arm/mach-pxa/mxm8x10.c | 6 ++--
arch/arm/mach-pxa/raumfeld.c | 6 ++--
arch/arm/mach-pxa/zylonite.c | 6 ++--
drivers/mtd/nand/marvell_nand.c | 3 +-
include/linux/platform_data/mtd-nand-pxa3xx.h | 43 ++++++++-------------------
8 files changed, 25 insertions(+), 57 deletions(-)
diff --git a/arch/arm/mach-pxa/cm-x300.c b/arch/arm/mach-pxa/cm-x300.c
index 89326378dabf..23bb273f3ff3 100644
--- a/arch/arm/mach-pxa/cm-x300.c
+++ b/arch/arm/mach-pxa/cm-x300.c
@@ -429,11 +429,9 @@ static struct mtd_partition cm_x300_nand_partitions[] = {
};
static struct pxa3xx_nand_platform_data cm_x300_nand_info = {
- .enable_arbiter = 1,
.keep_config = 1,
- .num_cs = 1,
- .parts[0] = cm_x300_nand_partitions,
- .nr_parts[0] = ARRAY_SIZE(cm_x300_nand_partitions),
+ .parts = cm_x300_nand_partitions,
+ .nr_parts = ARRAY_SIZE(cm_x300_nand_partitions),
};
static void __init cm_x300_init_nand(void)
diff --git a/arch/arm/mach-pxa/colibri-pxa3xx.c b/arch/arm/mach-pxa/colibri-pxa3xx.c
index c9c36f707555..adec6e013fe6 100644
--- a/arch/arm/mach-pxa/colibri-pxa3xx.c
+++ b/arch/arm/mach-pxa/colibri-pxa3xx.c
@@ -138,11 +138,9 @@ static struct mtd_partition colibri_nand_partitions[] = {
};
static struct pxa3xx_nand_platform_data colibri_nand_info = {
- .enable_arbiter = 1,
.keep_config = 1,
- .num_cs = 1,
- .parts[0] = colibri_nand_partitions,
- .nr_parts[0] = ARRAY_SIZE(colibri_nand_partitions),
+ .parts = colibri_nand_partitions,
+ .nr_parts = ARRAY_SIZE(colibri_nand_partitions),
};
void __init colibri_pxa3xx_init_nand(void)
diff --git a/arch/arm/mach-pxa/littleton.c b/arch/arm/mach-pxa/littleton.c
index 898961be36db..7e120e884165 100644
--- a/arch/arm/mach-pxa/littleton.c
+++ b/arch/arm/mach-pxa/littleton.c
@@ -328,10 +328,8 @@ static struct mtd_partition littleton_nand_partitions[] = {
};
static struct pxa3xx_nand_platform_data littleton_nand_info = {
- .enable_arbiter = 1,
- .num_cs = 1,
- .parts[0] = littleton_nand_partitions,
- .nr_parts[0] = ARRAY_SIZE(littleton_nand_partitions),
+ .parts = littleton_nand_partitions,
+ .nr_parts = ARRAY_SIZE(littleton_nand_partitions),
};
static void __init littleton_init_nand(void)
diff --git a/arch/arm/mach-pxa/mxm8x10.c b/arch/arm/mach-pxa/mxm8x10.c
index 7d7aab20b70a..328689052668 100644
--- a/arch/arm/mach-pxa/mxm8x10.c
+++ b/arch/arm/mach-pxa/mxm8x10.c
@@ -389,11 +389,9 @@ static struct mtd_partition mxm_8x10_nand_partitions[] = {
};
static struct pxa3xx_nand_platform_data mxm_8x10_nand_info = {
- .enable_arbiter = 1,
.keep_config = 1,
- .num_cs = 1,
- .parts[0] = mxm_8x10_nand_partitions,
- .nr_parts[0] = ARRAY_SIZE(mxm_8x10_nand_partitions)
+ .parts = mxm_8x10_nand_partitions,
+ .nr_parts = ARRAY_SIZE(mxm_8x10_nand_partitions)
};
static void __init mxm_8x10_nand_init(void)
diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c
index 9d662fed03ec..af72e79a7ffa 100644
--- a/arch/arm/mach-pxa/raumfeld.c
+++ b/arch/arm/mach-pxa/raumfeld.c
@@ -346,11 +346,9 @@ static struct mtd_partition raumfeld_nand_partitions[] = {
};
static struct pxa3xx_nand_platform_data raumfeld_nand_info = {
- .enable_arbiter = 1,
.keep_config = 1,
- .num_cs = 1,
- .parts[0] = raumfeld_nand_partitions,
- .nr_parts[0] = ARRAY_SIZE(raumfeld_nand_partitions),
+ .parts = raumfeld_nand_partitions,
+ .nr_parts = ARRAY_SIZE(raumfeld_nand_partitions),
};
/**
diff --git a/arch/arm/mach-pxa/zylonite.c b/arch/arm/mach-pxa/zylonite.c
index a4577118d518..0534949d63f6 100644
--- a/arch/arm/mach-pxa/zylonite.c
+++ b/arch/arm/mach-pxa/zylonite.c
@@ -376,10 +376,8 @@ static struct mtd_partition zylonite_nand_partitions[] = {
};
static struct pxa3xx_nand_platform_data zylonite_nand_info = {
- .enable_arbiter = 1,
- .num_cs = 1,
- .parts[0] = zylonite_nand_partitions,
- .nr_parts[0] = ARRAY_SIZE(zylonite_nand_partitions),
+ .parts = zylonite_nand_partitions,
+ .nr_parts = ARRAY_SIZE(zylonite_nand_partitions),
};
static void __init zylonite_init_nand(void)
diff --git a/drivers/mtd/nand/marvell_nand.c b/drivers/mtd/nand/marvell_nand.c
index 2525d9b2f4fa..75fbb3ea4977 100644
--- a/drivers/mtd/nand/marvell_nand.c
+++ b/drivers/mtd/nand/marvell_nand.c
@@ -2579,8 +2579,7 @@ static int marvell_nand_chip_init(struct device *dev, struct marvell_nfc *nfc,
if (pdata)
/* Legacy bindings support only one chip */
- ret = mtd_device_register(mtd, pdata->parts[0],
- pdata->nr_parts[0]);
+ ret = mtd_device_register(mtd, pdata->parts, pdata->nr_parts);
else
ret = mtd_device_register(mtd, NULL, 0);
if (ret) {
diff --git a/include/linux/platform_data/mtd-nand-pxa3xx.h b/include/linux/platform_data/mtd-nand-pxa3xx.h
index b42ad83cbc20..4fd0f592a2d2 100644
--- a/include/linux/platform_data/mtd-nand-pxa3xx.h
+++ b/include/linux/platform_data/mtd-nand-pxa3xx.h
@@ -6,41 +6,22 @@
#include <linux/mtd/partitions.h>
/*
- * Current pxa3xx_nand controller has two chip select which
- * both be workable.
- *
- * Notice should be taken that:
- * When you want to use this feature, you should not enable the
- * keep configuration feature, for two chip select could be
- * attached with different nand chip. The different page size
- * and timing requirement make the keep configuration impossible.
+ * Current pxa3xx_nand controller has two chip select which both be workable but
+ * historically all platforms remaining on platform data used only one. Switch
+ * to device tree if you need more.
*/
-
-/* The max num of chip select current support */
-#define NUM_CHIP_SELECT (2)
struct pxa3xx_nand_platform_data {
-
- /* the data flash bus is shared between the Static Memory
- * Controller and the Data Flash Controller, the arbiter
- * controls the ownership of the bus
- */
- int enable_arbiter;
-
- /* allow platform code to keep OBM/bootloader defined NFC config */
- int keep_config;
-
- /* indicate how many chip selects will be used */
- int num_cs;
-
- /* use an flash-based bad block table */
- bool flash_bbt;
-
- /* requested ECC strength and ECC step size */
+ /* Keep OBM/bootloader NFC timing configuration */
+ bool keep_config;
+ /* Use a flash-based bad block table */
+ bool flash_bbt;
+ /* Requested ECC strength and ECC step size */
int ecc_strength, ecc_step_size;
-
- const struct mtd_partition *parts[NUM_CHIP_SELECT];
- unsigned int nr_parts[NUM_CHIP_SELECT];
+ /* Partitions */
+ const struct mtd_partition *parts;
+ unsigned int nr_parts;
};
extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info);
+
#endif /* __ASM_ARCH_PXA3XX_NAND_H */
--
2.11.0
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^ permalink raw reply related
* [PATCH 04/12] dt-bindings: mtd: remove pxa3xx NAND controller documentation
From: Miquel Raynal @ 2017-12-07 20:18 UTC (permalink / raw)
To: David Woodhouse, Brian Norris, Boris Brezillon, Marek Vasut,
Richard Weinberger, Cyrille Pitchen, Rob Herring, Mark Rutland,
Jason Cooper, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth,
Russell King, Daniel Mack, Haojian Zhuang, Robert Jarzmik,
Eric Miao, Catalin Marinas
Cc: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Thomas Petazzoni, Antoine Tenart, Nadav Haklai, Miquel Raynal,
Ofer Heifetz, Hanna Hawa, Neta Zur Hershkovits
In-Reply-To: <20171207201814.30411-1-miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
The deprecated pxa3xx_nand.c driver does not exist anymore, it has been
replaced by marvell_nand.c which has its own up-to-date documentation.
Signed-off-by: Miquel Raynal <miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
---
.../devicetree/bindings/mtd/pxa3xx-nand.txt | 50 ----------------------
1 file changed, 50 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt
diff --git a/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt b/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt
deleted file mode 100644
index d4ee4da58463..000000000000
--- a/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt
+++ /dev/null
@@ -1,50 +0,0 @@
-PXA3xx NAND DT bindings
-
-Required properties:
-
- - compatible: Should be set to one of the following:
- marvell,pxa3xx-nand
- marvell,armada370-nand
- marvell,armada-8k-nand
- - reg: The register base for the controller
- - interrupts: The interrupt to map
- - #address-cells: Set to <1> if the node includes partitions
- - marvell,system-controller: Set to retrieve the syscon node that handles
- NAND controller related registers (only required
- with marvell,armada-8k-nand compatible).
-
-Optional properties:
-
- - dmas: dma data channel, see dma.txt binding doc
- - marvell,nand-enable-arbiter: Set to enable the bus arbiter
- - marvell,nand-keep-config: Set to keep the NAND controller config as set
- by the bootloader
- - num-cs: Number of chipselect lines to use
- - nand-on-flash-bbt: boolean to enable on flash bbt option if
- not present false
- - nand-ecc-strength: number of bits to correct per ECC step
- - nand-ecc-step-size: number of data bytes covered by a single ECC step
-
-The following ECC strength and step size are currently supported:
-
- - nand-ecc-strength = <1>, nand-ecc-step-size = <512>
- - nand-ecc-strength = <4>, nand-ecc-step-size = <512>
- - nand-ecc-strength = <8>, nand-ecc-step-size = <512>
-
-Example:
-
- nand0: nand@43100000 {
- compatible = "marvell,pxa3xx-nand";
- reg = <0x43100000 90>;
- interrupts = <45>;
- dmas = <&pdma 97 0>;
- dma-names = "data";
- #address-cells = <1>;
-
- marvell,nand-enable-arbiter;
- marvell,nand-keep-config;
- num-cs = <1>;
-
- /* partitions (optional) */
- };
-
--
2.11.0
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* [PATCH 03/12] mtd: nand: replace pxa3xx_nand driver by its rework called marvell_nand
From: Miquel Raynal @ 2017-12-07 20:18 UTC (permalink / raw)
To: David Woodhouse, Brian Norris, Boris Brezillon, Marek Vasut,
Richard Weinberger, Cyrille Pitchen, Rob Herring, Mark Rutland,
Jason Cooper, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth,
Russell King, Daniel Mack, Haojian Zhuang, Robert Jarzmik,
Eric Miao, Catalin Marinas
Cc: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Thomas Petazzoni, Antoine Tenart, Nadav Haklai, Miquel Raynal,
Ofer Heifetz, Hanna Hawa, Neta Zur Hershkovits
In-Reply-To: <20171207201814.30411-1-miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Actually remove pxa3xx_nand.c to let marvell_nand.c be compiled instead.
Also change the defconfig files using it as well as some board files
depending on CONFIG_MTD_NAND_PXA3xx.
Signed-off-by: Miquel Raynal <miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
---
arch/arm/configs/cm_x300_defconfig | 2 +-
arch/arm/configs/mvebu_v7_defconfig | 2 +-
arch/arm/configs/pxa3xx_defconfig | 3 +-
arch/arm/configs/pxa_defconfig | 2 +-
arch/arm/configs/raumfeld_defconfig | 2 +-
arch/arm/mach-mmp/ttc_dkb.c | 4 +-
arch/arm/mach-pxa/cm-x300.c | 2 +-
arch/arm/mach-pxa/colibri-pxa3xx.c | 2 +-
arch/arm/mach-pxa/colibri.h | 2 +-
arch/arm/mach-pxa/littleton.c | 4 +-
arch/arm/mach-pxa/mxm8x10.c | 4 +-
arch/arm/mach-pxa/zylonite.c | 4 +-
drivers/mtd/nand/Makefile | 1 -
drivers/mtd/nand/pxa3xx_nand.c | 2104 -----------------------------------
14 files changed, 16 insertions(+), 2122 deletions(-)
delete mode 100644 drivers/mtd/nand/pxa3xx_nand.c
diff --git a/arch/arm/configs/cm_x300_defconfig b/arch/arm/configs/cm_x300_defconfig
index c0418e03d180..5e349c625b71 100644
--- a/arch/arm/configs/cm_x300_defconfig
+++ b/arch/arm/configs/cm_x300_defconfig
@@ -49,7 +49,7 @@ CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_MTD=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_NAND=y
-CONFIG_MTD_NAND_PXA3xx=y
+CONFIG_MTD_NAND_MARVELL=y
CONFIG_MTD_UBI=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
diff --git a/arch/arm/configs/mvebu_v7_defconfig b/arch/arm/configs/mvebu_v7_defconfig
index 69553704f2dc..4b6e4fd47e5d 100644
--- a/arch/arm/configs/mvebu_v7_defconfig
+++ b/arch/arm/configs/mvebu_v7_defconfig
@@ -57,7 +57,7 @@ CONFIG_MTD_CFI_STAA=y
CONFIG_MTD_PHYSMAP_OF=y
CONFIG_MTD_M25P80=y
CONFIG_MTD_NAND=y
-CONFIG_MTD_NAND_PXA3xx=y
+CONFIG_MTD_NAND_MARVELL=y
CONFIG_MTD_SPI_NOR=y
CONFIG_SRAM=y
CONFIG_MTD_UBI=y
diff --git a/arch/arm/configs/pxa3xx_defconfig b/arch/arm/configs/pxa3xx_defconfig
index bfea6874b0a1..3e0de035ab77 100644
--- a/arch/arm/configs/pxa3xx_defconfig
+++ b/arch/arm/configs/pxa3xx_defconfig
@@ -32,8 +32,7 @@ CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_MTD=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_NAND=y
-CONFIG_MTD_NAND_PXA3xx=y
-CONFIG_MTD_NAND_PXA3xx_BUILTIN=y
+CONFIG_MTD_NAND_MARVELL=y
CONFIG_MTD_ONENAND=y
CONFIG_MTD_ONENAND_VERIFY_WRITE=y
CONFIG_MTD_ONENAND_GENERIC=y
diff --git a/arch/arm/configs/pxa_defconfig b/arch/arm/configs/pxa_defconfig
index 830e817a028a..934af8601f7d 100644
--- a/arch/arm/configs/pxa_defconfig
+++ b/arch/arm/configs/pxa_defconfig
@@ -198,7 +198,7 @@ CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS=0x4000000
CONFIG_MTD_NAND_DISKONCHIP_PROBE_HIGH=y
CONFIG_MTD_NAND_DISKONCHIP_BBTWRITE=y
CONFIG_MTD_NAND_SHARPSL=m
-CONFIG_MTD_NAND_PXA3xx=m
+CONFIG_MTD_NAND_MARVELL=m
CONFIG_MTD_NAND_CM_X270=m
CONFIG_MTD_NAND_TMIO=m
CONFIG_MTD_NAND_BRCMNAND=m
diff --git a/arch/arm/configs/raumfeld_defconfig b/arch/arm/configs/raumfeld_defconfig
index 77a56c23c6ef..2dd56e9a484e 100644
--- a/arch/arm/configs/raumfeld_defconfig
+++ b/arch/arm/configs/raumfeld_defconfig
@@ -33,7 +33,7 @@ CONFIG_NFTL=y
CONFIG_NFTL_RW=y
CONFIG_MTD_BLOCK2MTD=y
CONFIG_MTD_NAND=y
-CONFIG_MTD_NAND_PXA3xx=y
+CONFIG_MTD_NAND_MARVELL=y
CONFIG_MTD_UBI=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_ISL29003=y
diff --git a/arch/arm/mach-mmp/ttc_dkb.c b/arch/arm/mach-mmp/ttc_dkb.c
index d90c74fa614d..e0b6073c61a7 100644
--- a/arch/arm/mach-mmp/ttc_dkb.c
+++ b/arch/arm/mach-mmp/ttc_dkb.c
@@ -178,7 +178,7 @@ static struct mv_usb_platform_data ttc_usb_pdata = {
#endif
#endif
-#if IS_ENABLED(CONFIG_MTD_NAND_PXA3xx)
+#if IS_ENABLED(CONFIG_MTD_NAND_MARVELL)
static struct pxa3xx_nand_platform_data dkb_nand_info = {
.enable_arbiter = 1,
.num_cs = 1,
@@ -275,7 +275,7 @@ static void __init ttc_dkb_init(void)
/* on-chip devices */
pxa910_add_uart(1);
-#if IS_ENABLED(CONFIG_MTD_NAND_PXA3xx)
+#if IS_ENABLED(CONFIG_MTD_NAND_MARVELL)
pxa910_add_nand(&dkb_nand_info);
#endif
diff --git a/arch/arm/mach-pxa/cm-x300.c b/arch/arm/mach-pxa/cm-x300.c
index 868448d2cd82..89326378dabf 100644
--- a/arch/arm/mach-pxa/cm-x300.c
+++ b/arch/arm/mach-pxa/cm-x300.c
@@ -391,7 +391,7 @@ static void __init cm_x300_init_ac97(void)
static inline void cm_x300_init_ac97(void) {}
#endif
-#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
+#if defined(CONFIG_MTD_NAND_MARVELL) || defined(CONFIG_MTD_NAND_MARVELL_MODULE)
static struct mtd_partition cm_x300_nand_partitions[] = {
[0] = {
.name = "OBM",
diff --git a/arch/arm/mach-pxa/colibri-pxa3xx.c b/arch/arm/mach-pxa/colibri-pxa3xx.c
index b04431bb4ba7..c9c36f707555 100644
--- a/arch/arm/mach-pxa/colibri-pxa3xx.c
+++ b/arch/arm/mach-pxa/colibri-pxa3xx.c
@@ -110,7 +110,7 @@ void __init colibri_pxa3xx_init_lcd(int bl_pin)
}
#endif
-#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
+#if defined(CONFIG_MTD_NAND_MARVELL) || defined(CONFIG_MTD_NAND_MARVELL_MODULE)
static struct mtd_partition colibri_nand_partitions[] = {
{
.name = "bootloader",
diff --git a/arch/arm/mach-pxa/colibri.h b/arch/arm/mach-pxa/colibri.h
index 673a131da875..d5ba74831916 100644
--- a/arch/arm/mach-pxa/colibri.h
+++ b/arch/arm/mach-pxa/colibri.h
@@ -46,7 +46,7 @@ static inline void colibri_pxa3xx_init_lcd(int bl_pin) {}
extern void colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data);
#endif
-#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
+#if defined(CONFIG_MTD_NAND_MARVELL) || defined(CONFIG_MTD_NAND_MARVELL_MODULE)
extern void colibri_pxa3xx_init_nand(void);
#else
static inline void colibri_pxa3xx_init_nand(void) {}
diff --git a/arch/arm/mach-pxa/littleton.c b/arch/arm/mach-pxa/littleton.c
index fae38fdc8d8e..898961be36db 100644
--- a/arch/arm/mach-pxa/littleton.c
+++ b/arch/arm/mach-pxa/littleton.c
@@ -290,7 +290,7 @@ static void __init littleton_init_mmc(void)
static inline void littleton_init_mmc(void) {}
#endif
-#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
+#if defined(CONFIG_MTD_NAND_MARVELL) || defined(CONFIG_MTD_NAND_MARVELL_MODULE)
static struct mtd_partition littleton_nand_partitions[] = {
[0] = {
.name = "Bootloader",
@@ -340,7 +340,7 @@ static void __init littleton_init_nand(void)
}
#else
static inline void littleton_init_nand(void) {}
-#endif /* CONFIG_MTD_NAND_PXA3xx || CONFIG_MTD_NAND_PXA3xx_MODULE */
+#endif /* CONFIG_MTD_NAND_MARVELL || CONFIG_MTD_NAND_MARVELL_MODULE */
#if defined(CONFIG_I2C_PXA) || defined(CONFIG_I2C_PXA_MODULE)
static struct led_info littleton_da9034_leds[] = {
diff --git a/arch/arm/mach-pxa/mxm8x10.c b/arch/arm/mach-pxa/mxm8x10.c
index 9a22ae0ad8c9..7d7aab20b70a 100644
--- a/arch/arm/mach-pxa/mxm8x10.c
+++ b/arch/arm/mach-pxa/mxm8x10.c
@@ -359,7 +359,7 @@ void __init mxm_8x10_ac97_init(void)
}
/* NAND flash Support */
-#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
+#if defined(CONFIG_MTD_NAND_MARVELL) || defined(CONFIG_MTD_NAND_MARVELL_MODULE)
#define NAND_BLOCK_SIZE SZ_128K
#define NB(x) (NAND_BLOCK_SIZE * (x))
static struct mtd_partition mxm_8x10_nand_partitions[] = {
@@ -402,7 +402,7 @@ static void __init mxm_8x10_nand_init(void)
}
#else
static inline void mxm_8x10_nand_init(void) {}
-#endif /* CONFIG_MTD_NAND_PXA3xx || CONFIG_MTD_NAND_PXA3xx_MODULE */
+#endif /* CONFIG_MTD_NAND_MARVELL || CONFIG_MTD_NAND_MARVELL_MODULE */
/* Ethernet support: Davicom DM9000 */
static struct resource dm9k_resources[] = {
diff --git a/arch/arm/mach-pxa/zylonite.c b/arch/arm/mach-pxa/zylonite.c
index 4268552d600d..a4577118d518 100644
--- a/arch/arm/mach-pxa/zylonite.c
+++ b/arch/arm/mach-pxa/zylonite.c
@@ -338,7 +338,7 @@ static void __init zylonite_init_keypad(void)
static inline void zylonite_init_keypad(void) {}
#endif
-#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
+#if defined(CONFIG_MTD_NAND_MARVELL) || defined(CONFIG_MTD_NAND_MARVELL_MODULE)
static struct mtd_partition zylonite_nand_partitions[] = {
[0] = {
.name = "Bootloader",
@@ -388,7 +388,7 @@ static void __init zylonite_init_nand(void)
}
#else
static inline void zylonite_init_nand(void) {}
-#endif /* CONFIG_MTD_NAND_PXA3xx || CONFIG_MTD_NAND_PXA3xx_MODULE */
+#endif /* CONFIG_MTD_NAND_MARVELL || CONFIG_MTD_NAND_MARVELL_MODULE */
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
static struct pxaohci_platform_data zylonite_ohci_info = {
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 921634ba400c..c882d5ef192a 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -31,7 +31,6 @@ omap2_nand-objs := omap2.o
obj-$(CONFIG_MTD_NAND_OMAP2) += omap2_nand.o
obj-$(CONFIG_MTD_NAND_OMAP_BCH_BUILD) += omap_elm.o
obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o
-obj-$(CONFIG_MTD_NAND_PXA3xx) += pxa3xx_nand.o
obj-$(CONFIG_MTD_NAND_MARVELL) += marvell_nand.o
obj-$(CONFIG_MTD_NAND_TMIO) += tmio_nand.o
obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
deleted file mode 100644
index 021374fe59dc..000000000000
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ /dev/null
@@ -1,2104 +0,0 @@
-/*
- * drivers/mtd/nand/pxa3xx_nand.c
- *
- * Copyright © 2005 Intel Corporation
- * Copyright © 2006 Marvell International Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * See Documentation/mtd/nand/pxa3xx-nand.txt for more details.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/dmaengine.h>
-#include <linux/dma-mapping.h>
-#include <linux/dma/pxa-dma.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/rawnand.h>
-#include <linux/mtd/partitions.h>
-#include <linux/io.h>
-#include <linux/iopoll.h>
-#include <linux/irq.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/platform_data/mtd-nand-pxa3xx.h>
-#include <linux/mfd/syscon.h>
-#include <linux/regmap.h>
-
-#define CHIP_DELAY_TIMEOUT msecs_to_jiffies(200)
-#define NAND_STOP_DELAY msecs_to_jiffies(40)
-#define PAGE_CHUNK_SIZE (2048)
-
-/*
- * Define a buffer size for the initial command that detects the flash device:
- * STATUS, READID and PARAM.
- * ONFI param page is 256 bytes, and there are three redundant copies
- * to be read. JEDEC param page is 512 bytes, and there are also three
- * redundant copies to be read.
- * Hence this buffer should be at least 512 x 3. Let's pick 2048.
- */
-#define INIT_BUFFER_SIZE 2048
-
-/* System control register and bit to enable NAND on some SoCs */
-#define GENCONF_SOC_DEVICE_MUX 0x208
-#define GENCONF_SOC_DEVICE_MUX_NFC_EN BIT(0)
-
-/* registers and bit definitions */
-#define NDCR (0x00) /* Control register */
-#define NDTR0CS0 (0x04) /* Timing Parameter 0 for CS0 */
-#define NDTR1CS0 (0x0C) /* Timing Parameter 1 for CS0 */
-#define NDSR (0x14) /* Status Register */
-#define NDPCR (0x18) /* Page Count Register */
-#define NDBDR0 (0x1C) /* Bad Block Register 0 */
-#define NDBDR1 (0x20) /* Bad Block Register 1 */
-#define NDECCCTRL (0x28) /* ECC control */
-#define NDDB (0x40) /* Data Buffer */
-#define NDCB0 (0x48) /* Command Buffer0 */
-#define NDCB1 (0x4C) /* Command Buffer1 */
-#define NDCB2 (0x50) /* Command Buffer2 */
-
-#define NDCR_SPARE_EN (0x1 << 31)
-#define NDCR_ECC_EN (0x1 << 30)
-#define NDCR_DMA_EN (0x1 << 29)
-#define NDCR_ND_RUN (0x1 << 28)
-#define NDCR_DWIDTH_C (0x1 << 27)
-#define NDCR_DWIDTH_M (0x1 << 26)
-#define NDCR_PAGE_SZ (0x1 << 24)
-#define NDCR_NCSX (0x1 << 23)
-#define NDCR_ND_MODE (0x3 << 21)
-#define NDCR_NAND_MODE (0x0)
-#define NDCR_CLR_PG_CNT (0x1 << 20)
-#define NFCV1_NDCR_ARB_CNTL (0x1 << 19)
-#define NFCV2_NDCR_STOP_ON_UNCOR (0x1 << 19)
-#define NDCR_RD_ID_CNT_MASK (0x7 << 16)
-#define NDCR_RD_ID_CNT(x) (((x) << 16) & NDCR_RD_ID_CNT_MASK)
-
-#define NDCR_RA_START (0x1 << 15)
-#define NDCR_PG_PER_BLK (0x1 << 14)
-#define NDCR_ND_ARB_EN (0x1 << 12)
-#define NDCR_INT_MASK (0xFFF)
-
-#define NDSR_MASK (0xfff)
-#define NDSR_ERR_CNT_OFF (16)
-#define NDSR_ERR_CNT_MASK (0x1f)
-#define NDSR_ERR_CNT(sr) ((sr >> NDSR_ERR_CNT_OFF) & NDSR_ERR_CNT_MASK)
-#define NDSR_RDY (0x1 << 12)
-#define NDSR_FLASH_RDY (0x1 << 11)
-#define NDSR_CS0_PAGED (0x1 << 10)
-#define NDSR_CS1_PAGED (0x1 << 9)
-#define NDSR_CS0_CMDD (0x1 << 8)
-#define NDSR_CS1_CMDD (0x1 << 7)
-#define NDSR_CS0_BBD (0x1 << 6)
-#define NDSR_CS1_BBD (0x1 << 5)
-#define NDSR_UNCORERR (0x1 << 4)
-#define NDSR_CORERR (0x1 << 3)
-#define NDSR_WRDREQ (0x1 << 2)
-#define NDSR_RDDREQ (0x1 << 1)
-#define NDSR_WRCMDREQ (0x1)
-
-#define NDCB0_LEN_OVRD (0x1 << 28)
-#define NDCB0_ST_ROW_EN (0x1 << 26)
-#define NDCB0_AUTO_RS (0x1 << 25)
-#define NDCB0_CSEL (0x1 << 24)
-#define NDCB0_EXT_CMD_TYPE_MASK (0x7 << 29)
-#define NDCB0_EXT_CMD_TYPE(x) (((x) << 29) & NDCB0_EXT_CMD_TYPE_MASK)
-#define NDCB0_CMD_TYPE_MASK (0x7 << 21)
-#define NDCB0_CMD_TYPE(x) (((x) << 21) & NDCB0_CMD_TYPE_MASK)
-#define NDCB0_NC (0x1 << 20)
-#define NDCB0_DBC (0x1 << 19)
-#define NDCB0_ADDR_CYC_MASK (0x7 << 16)
-#define NDCB0_ADDR_CYC(x) (((x) << 16) & NDCB0_ADDR_CYC_MASK)
-#define NDCB0_CMD2_MASK (0xff << 8)
-#define NDCB0_CMD1_MASK (0xff)
-#define NDCB0_ADDR_CYC_SHIFT (16)
-
-#define EXT_CMD_TYPE_DISPATCH 6 /* Command dispatch */
-#define EXT_CMD_TYPE_NAKED_RW 5 /* Naked read or Naked write */
-#define EXT_CMD_TYPE_READ 4 /* Read */
-#define EXT_CMD_TYPE_DISP_WR 4 /* Command dispatch with write */
-#define EXT_CMD_TYPE_FINAL 3 /* Final command */
-#define EXT_CMD_TYPE_LAST_RW 1 /* Last naked read/write */
-#define EXT_CMD_TYPE_MONO 0 /* Monolithic read/write */
-
-/*
- * This should be large enough to read 'ONFI' and 'JEDEC'.
- * Let's use 7 bytes, which is the maximum ID count supported
- * by the controller (see NDCR_RD_ID_CNT_MASK).
- */
-#define READ_ID_BYTES 7
-
-/* macros for registers read/write */
-#define nand_writel(info, off, val) \
- do { \
- dev_vdbg(&info->pdev->dev, \
- "%s():%d nand_writel(0x%x, 0x%04x)\n", \
- __func__, __LINE__, (val), (off)); \
- writel_relaxed((val), (info)->mmio_base + (off)); \
- } while (0)
-
-#define nand_readl(info, off) \
- ({ \
- unsigned int _v; \
- _v = readl_relaxed((info)->mmio_base + (off)); \
- dev_vdbg(&info->pdev->dev, \
- "%s():%d nand_readl(0x%04x) = 0x%x\n", \
- __func__, __LINE__, (off), _v); \
- _v; \
- })
-
-/* error code and state */
-enum {
- ERR_NONE = 0,
- ERR_DMABUSERR = -1,
- ERR_SENDCMD = -2,
- ERR_UNCORERR = -3,
- ERR_BBERR = -4,
- ERR_CORERR = -5,
-};
-
-enum {
- STATE_IDLE = 0,
- STATE_PREPARED,
- STATE_CMD_HANDLE,
- STATE_DMA_READING,
- STATE_DMA_WRITING,
- STATE_DMA_DONE,
- STATE_PIO_READING,
- STATE_PIO_WRITING,
- STATE_CMD_DONE,
- STATE_READY,
-};
-
-enum pxa3xx_nand_variant {
- PXA3XX_NAND_VARIANT_PXA,
- PXA3XX_NAND_VARIANT_ARMADA370,
- PXA3XX_NAND_VARIANT_ARMADA_8K,
-};
-
-struct pxa3xx_nand_host {
- struct nand_chip chip;
- void *info_data;
-
- /* page size of attached chip */
- int use_ecc;
- int cs;
-
- /* calculated from pxa3xx_nand_flash data */
- unsigned int col_addr_cycles;
- unsigned int row_addr_cycles;
-};
-
-struct pxa3xx_nand_info {
- struct nand_hw_control controller;
- struct platform_device *pdev;
-
- struct clk *clk;
- void __iomem *mmio_base;
- unsigned long mmio_phys;
- struct completion cmd_complete, dev_ready;
-
- unsigned int buf_start;
- unsigned int buf_count;
- unsigned int buf_size;
- unsigned int data_buff_pos;
- unsigned int oob_buff_pos;
-
- /* DMA information */
- struct scatterlist sg;
- enum dma_data_direction dma_dir;
- struct dma_chan *dma_chan;
- dma_cookie_t dma_cookie;
- int drcmr_dat;
-
- unsigned char *data_buff;
- unsigned char *oob_buff;
- dma_addr_t data_buff_phys;
- int data_dma_ch;
-
- struct pxa3xx_nand_host *host[NUM_CHIP_SELECT];
- unsigned int state;
-
- /*
- * This driver supports NFCv1 (as found in PXA SoC)
- * and NFCv2 (as found in Armada 370/XP SoC).
- */
- enum pxa3xx_nand_variant variant;
-
- int cs;
- int use_ecc; /* use HW ECC ? */
- int ecc_bch; /* using BCH ECC? */
- int use_dma; /* use DMA ? */
- int use_spare; /* use spare ? */
- int need_wait;
-
- /* Amount of real data per full chunk */
- unsigned int chunk_size;
-
- /* Amount of spare data per full chunk */
- unsigned int spare_size;
-
- /* Number of full chunks (i.e chunk_size + spare_size) */
- unsigned int nfullchunks;
-
- /*
- * Total number of chunks. If equal to nfullchunks, then there
- * are only full chunks. Otherwise, there is one last chunk of
- * size (last_chunk_size + last_spare_size)
- */
- unsigned int ntotalchunks;
-
- /* Amount of real data in the last chunk */
- unsigned int last_chunk_size;
-
- /* Amount of spare data in the last chunk */
- unsigned int last_spare_size;
-
- unsigned int ecc_size;
- unsigned int ecc_err_cnt;
- unsigned int max_bitflips;
- int retcode;
-
- /*
- * Variables only valid during command
- * execution. step_chunk_size and step_spare_size is the
- * amount of real data and spare data in the current
- * chunk. cur_chunk is the current chunk being
- * read/programmed.
- */
- unsigned int step_chunk_size;
- unsigned int step_spare_size;
- unsigned int cur_chunk;
-
- /* cached register value */
- uint32_t reg_ndcr;
- uint32_t ndtr0cs0;
- uint32_t ndtr1cs0;
-
- /* generated NDCBx register values */
- uint32_t ndcb0;
- uint32_t ndcb1;
- uint32_t ndcb2;
- uint32_t ndcb3;
-};
-
-static bool use_dma = 1;
-module_param(use_dma, bool, 0444);
-MODULE_PARM_DESC(use_dma, "enable DMA for data transferring to/from NAND HW");
-
-struct pxa3xx_nand_timing {
- unsigned int tCH; /* Enable signal hold time */
- unsigned int tCS; /* Enable signal setup time */
- unsigned int tWH; /* ND_nWE high duration */
- unsigned int tWP; /* ND_nWE pulse time */
- unsigned int tRH; /* ND_nRE high duration */
- unsigned int tRP; /* ND_nRE pulse width */
- unsigned int tR; /* ND_nWE high to ND_nRE low for read */
- unsigned int tWHR; /* ND_nWE high to ND_nRE low for status read */
- unsigned int tAR; /* ND_ALE low to ND_nRE low delay */
-};
-
-struct pxa3xx_nand_flash {
- uint32_t chip_id;
- unsigned int flash_width; /* Width of Flash memory (DWIDTH_M) */
- unsigned int dfc_width; /* Width of flash controller(DWIDTH_C) */
- struct pxa3xx_nand_timing *timing; /* NAND Flash timing */
-};
-
-static struct pxa3xx_nand_timing timing[] = {
- { 40, 80, 60, 100, 80, 100, 90000, 400, 40, },
- { 10, 0, 20, 40, 30, 40, 11123, 110, 10, },
- { 10, 25, 15, 25, 15, 30, 25000, 60, 10, },
- { 10, 35, 15, 25, 15, 25, 25000, 60, 10, },
-};
-
-static struct pxa3xx_nand_flash builtin_flash_types[] = {
- { 0x46ec, 16, 16, &timing[1] },
- { 0xdaec, 8, 8, &timing[1] },
- { 0xd7ec, 8, 8, &timing[1] },
- { 0xa12c, 8, 8, &timing[2] },
- { 0xb12c, 16, 16, &timing[2] },
- { 0xdc2c, 8, 8, &timing[2] },
- { 0xcc2c, 16, 16, &timing[2] },
- { 0xba20, 16, 16, &timing[3] },
-};
-
-static int pxa3xx_ooblayout_ecc(struct mtd_info *mtd, int section,
- struct mtd_oob_region *oobregion)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
- struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
- struct pxa3xx_nand_info *info = host->info_data;
- int nchunks = mtd->writesize / info->chunk_size;
-
- if (section >= nchunks)
- return -ERANGE;
-
- oobregion->offset = ((info->ecc_size + info->spare_size) * section) +
- info->spare_size;
- oobregion->length = info->ecc_size;
-
- return 0;
-}
-
-static int pxa3xx_ooblayout_free(struct mtd_info *mtd, int section,
- struct mtd_oob_region *oobregion)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
- struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
- struct pxa3xx_nand_info *info = host->info_data;
- int nchunks = mtd->writesize / info->chunk_size;
-
- if (section >= nchunks)
- return -ERANGE;
-
- if (!info->spare_size)
- return 0;
-
- oobregion->offset = section * (info->ecc_size + info->spare_size);
- oobregion->length = info->spare_size;
- if (!section) {
- /*
- * Bootrom looks in bytes 0 & 5 for bad blocks for the
- * 4KB page / 4bit BCH combination.
- */
- if (mtd->writesize == 4096 && info->chunk_size == 2048) {
- oobregion->offset += 6;
- oobregion->length -= 6;
- } else {
- oobregion->offset += 2;
- oobregion->length -= 2;
- }
- }
-
- return 0;
-}
-
-static const struct mtd_ooblayout_ops pxa3xx_ooblayout_ops = {
- .ecc = pxa3xx_ooblayout_ecc,
- .free = pxa3xx_ooblayout_free,
-};
-
-static u8 bbt_pattern[] = {'M', 'V', 'B', 'b', 't', '0' };
-static u8 bbt_mirror_pattern[] = {'1', 't', 'b', 'B', 'V', 'M' };
-
-static struct nand_bbt_descr bbt_main_descr = {
- .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
- | NAND_BBT_2BIT | NAND_BBT_VERSION,
- .offs = 8,
- .len = 6,
- .veroffs = 14,
- .maxblocks = 8, /* Last 8 blocks in each chip */
- .pattern = bbt_pattern
-};
-
-static struct nand_bbt_descr bbt_mirror_descr = {
- .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
- | NAND_BBT_2BIT | NAND_BBT_VERSION,
- .offs = 8,
- .len = 6,
- .veroffs = 14,
- .maxblocks = 8, /* Last 8 blocks in each chip */
- .pattern = bbt_mirror_pattern
-};
-
-#define NDTR0_tCH(c) (min((c), 7) << 19)
-#define NDTR0_tCS(c) (min((c), 7) << 16)
-#define NDTR0_tWH(c) (min((c), 7) << 11)
-#define NDTR0_tWP(c) (min((c), 7) << 8)
-#define NDTR0_tRH(c) (min((c), 7) << 3)
-#define NDTR0_tRP(c) (min((c), 7) << 0)
-
-#define NDTR1_tR(c) (min((c), 65535) << 16)
-#define NDTR1_tWHR(c) (min((c), 15) << 4)
-#define NDTR1_tAR(c) (min((c), 15) << 0)
-
-/* convert nano-seconds to nand flash controller clock cycles */
-#define ns2cycle(ns, clk) (int)((ns) * (clk / 1000000) / 1000)
-
-static const struct of_device_id pxa3xx_nand_dt_ids[] = {
- {
- .compatible = "marvell,pxa3xx-nand",
- .data = (void *)PXA3XX_NAND_VARIANT_PXA,
- },
- {
- .compatible = "marvell,armada370-nand",
- .data = (void *)PXA3XX_NAND_VARIANT_ARMADA370,
- },
- {
- .compatible = "marvell,armada-8k-nand",
- .data = (void *)PXA3XX_NAND_VARIANT_ARMADA_8K,
- },
- {}
-};
-MODULE_DEVICE_TABLE(of, pxa3xx_nand_dt_ids);
-
-static enum pxa3xx_nand_variant
-pxa3xx_nand_get_variant(struct platform_device *pdev)
-{
- const struct of_device_id *of_id =
- of_match_device(pxa3xx_nand_dt_ids, &pdev->dev);
- if (!of_id)
- return PXA3XX_NAND_VARIANT_PXA;
- return (enum pxa3xx_nand_variant)of_id->data;
-}
-
-static void pxa3xx_nand_set_timing(struct pxa3xx_nand_host *host,
- const struct pxa3xx_nand_timing *t)
-{
- struct pxa3xx_nand_info *info = host->info_data;
- unsigned long nand_clk = clk_get_rate(info->clk);
- uint32_t ndtr0, ndtr1;
-
- ndtr0 = NDTR0_tCH(ns2cycle(t->tCH, nand_clk)) |
- NDTR0_tCS(ns2cycle(t->tCS, nand_clk)) |
- NDTR0_tWH(ns2cycle(t->tWH, nand_clk)) |
- NDTR0_tWP(ns2cycle(t->tWP, nand_clk)) |
- NDTR0_tRH(ns2cycle(t->tRH, nand_clk)) |
- NDTR0_tRP(ns2cycle(t->tRP, nand_clk));
-
- ndtr1 = NDTR1_tR(ns2cycle(t->tR, nand_clk)) |
- NDTR1_tWHR(ns2cycle(t->tWHR, nand_clk)) |
- NDTR1_tAR(ns2cycle(t->tAR, nand_clk));
-
- info->ndtr0cs0 = ndtr0;
- info->ndtr1cs0 = ndtr1;
- nand_writel(info, NDTR0CS0, ndtr0);
- nand_writel(info, NDTR1CS0, ndtr1);
-}
-
-static void pxa3xx_nand_set_sdr_timing(struct pxa3xx_nand_host *host,
- const struct nand_sdr_timings *t)
-{
- struct pxa3xx_nand_info *info = host->info_data;
- struct nand_chip *chip = &host->chip;
- unsigned long nand_clk = clk_get_rate(info->clk);
- uint32_t ndtr0, ndtr1;
-
- u32 tCH_min = DIV_ROUND_UP(t->tCH_min, 1000);
- u32 tCS_min = DIV_ROUND_UP(t->tCS_min, 1000);
- u32 tWH_min = DIV_ROUND_UP(t->tWH_min, 1000);
- u32 tWP_min = DIV_ROUND_UP(t->tWC_min - t->tWH_min, 1000);
- u32 tREH_min = DIV_ROUND_UP(t->tREH_min, 1000);
- u32 tRP_min = DIV_ROUND_UP(t->tRC_min - t->tREH_min, 1000);
- u32 tR = chip->chip_delay * 1000;
- u32 tWHR_min = DIV_ROUND_UP(t->tWHR_min, 1000);
- u32 tAR_min = DIV_ROUND_UP(t->tAR_min, 1000);
-
- /* fallback to a default value if tR = 0 */
- if (!tR)
- tR = 20000;
-
- ndtr0 = NDTR0_tCH(ns2cycle(tCH_min, nand_clk)) |
- NDTR0_tCS(ns2cycle(tCS_min, nand_clk)) |
- NDTR0_tWH(ns2cycle(tWH_min, nand_clk)) |
- NDTR0_tWP(ns2cycle(tWP_min, nand_clk)) |
- NDTR0_tRH(ns2cycle(tREH_min, nand_clk)) |
- NDTR0_tRP(ns2cycle(tRP_min, nand_clk));
-
- ndtr1 = NDTR1_tR(ns2cycle(tR, nand_clk)) |
- NDTR1_tWHR(ns2cycle(tWHR_min, nand_clk)) |
- NDTR1_tAR(ns2cycle(tAR_min, nand_clk));
-
- info->ndtr0cs0 = ndtr0;
- info->ndtr1cs0 = ndtr1;
- nand_writel(info, NDTR0CS0, ndtr0);
- nand_writel(info, NDTR1CS0, ndtr1);
-}
-
-static int pxa3xx_nand_init_timings_compat(struct pxa3xx_nand_host *host,
- unsigned int *flash_width,
- unsigned int *dfc_width)
-{
- struct nand_chip *chip = &host->chip;
- struct pxa3xx_nand_info *info = host->info_data;
- const struct pxa3xx_nand_flash *f = NULL;
- int i, id, ntypes;
- u8 idbuf[2];
-
- ntypes = ARRAY_SIZE(builtin_flash_types);
-
- nand_readid_op(chip, 0, idbuf, sizeof(idbuf));
- id = idbuf[0] | (idbuf[1] << 8);
-
- for (i = 0; i < ntypes; i++) {
- f = &builtin_flash_types[i];
-
- if (f->chip_id == id)
- break;
- }
-
- if (i == ntypes) {
- dev_err(&info->pdev->dev, "Error: timings not found\n");
- return -EINVAL;
- }
-
- pxa3xx_nand_set_timing(host, f->timing);
-
- *flash_width = f->flash_width;
- *dfc_width = f->dfc_width;
-
- return 0;
-}
-
-static int pxa3xx_nand_init_timings_onfi(struct pxa3xx_nand_host *host,
- int mode)
-{
- const struct nand_sdr_timings *timings;
-
- mode = fls(mode) - 1;
- if (mode < 0)
- mode = 0;
-
- timings = onfi_async_timing_mode_to_sdr_timings(mode);
- if (IS_ERR(timings))
- return PTR_ERR(timings);
-
- pxa3xx_nand_set_sdr_timing(host, timings);
-
- return 0;
-}
-
-static int pxa3xx_nand_init(struct pxa3xx_nand_host *host)
-{
- struct nand_chip *chip = &host->chip;
- struct pxa3xx_nand_info *info = host->info_data;
- unsigned int flash_width = 0, dfc_width = 0;
- int mode, err;
-
- mode = onfi_get_async_timing_mode(chip);
- if (mode == ONFI_TIMING_MODE_UNKNOWN) {
- err = pxa3xx_nand_init_timings_compat(host, &flash_width,
- &dfc_width);
- if (err)
- return err;
-
- if (flash_width == 16) {
- info->reg_ndcr |= NDCR_DWIDTH_M;
- chip->options |= NAND_BUSWIDTH_16;
- }
-
- info->reg_ndcr |= (dfc_width == 16) ? NDCR_DWIDTH_C : 0;
- } else {
- err = pxa3xx_nand_init_timings_onfi(host, mode);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-/**
- * NOTE: it is a must to set ND_RUN firstly, then write
- * command buffer, otherwise, it does not work.
- * We enable all the interrupt at the same time, and
- * let pxa3xx_nand_irq to handle all logic.
- */
-static void pxa3xx_nand_start(struct pxa3xx_nand_info *info)
-{
- uint32_t ndcr;
-
- ndcr = info->reg_ndcr;
-
- if (info->use_ecc) {
- ndcr |= NDCR_ECC_EN;
- if (info->ecc_bch)
- nand_writel(info, NDECCCTRL, 0x1);
- } else {
- ndcr &= ~NDCR_ECC_EN;
- if (info->ecc_bch)
- nand_writel(info, NDECCCTRL, 0x0);
- }
-
- if (info->use_dma)
- ndcr |= NDCR_DMA_EN;
- else
- ndcr &= ~NDCR_DMA_EN;
-
- if (info->use_spare)
- ndcr |= NDCR_SPARE_EN;
- else
- ndcr &= ~NDCR_SPARE_EN;
-
- ndcr |= NDCR_ND_RUN;
-
- /* clear status bits and run */
- nand_writel(info, NDSR, NDSR_MASK);
- nand_writel(info, NDCR, 0);
- nand_writel(info, NDCR, ndcr);
-}
-
-static void pxa3xx_nand_stop(struct pxa3xx_nand_info *info)
-{
- uint32_t ndcr;
- int timeout = NAND_STOP_DELAY;
-
- /* wait RUN bit in NDCR become 0 */
- ndcr = nand_readl(info, NDCR);
- while ((ndcr & NDCR_ND_RUN) && (timeout-- > 0)) {
- ndcr = nand_readl(info, NDCR);
- udelay(1);
- }
-
- if (timeout <= 0) {
- ndcr &= ~NDCR_ND_RUN;
- nand_writel(info, NDCR, ndcr);
- }
- if (info->dma_chan)
- dmaengine_terminate_all(info->dma_chan);
-
- /* clear status bits */
- nand_writel(info, NDSR, NDSR_MASK);
-}
-
-static void __maybe_unused
-enable_int(struct pxa3xx_nand_info *info, uint32_t int_mask)
-{
- uint32_t ndcr;
-
- ndcr = nand_readl(info, NDCR);
- nand_writel(info, NDCR, ndcr & ~int_mask);
-}
-
-static void disable_int(struct pxa3xx_nand_info *info, uint32_t int_mask)
-{
- uint32_t ndcr;
-
- ndcr = nand_readl(info, NDCR);
- nand_writel(info, NDCR, ndcr | int_mask);
-}
-
-static void drain_fifo(struct pxa3xx_nand_info *info, void *data, int len)
-{
- if (info->ecc_bch) {
- u32 val;
- int ret;
-
- /*
- * According to the datasheet, when reading from NDDB
- * with BCH enabled, after each 32 bytes reads, we
- * have to make sure that the NDSR.RDDREQ bit is set.
- *
- * Drain the FIFO 8 32 bits reads at a time, and skip
- * the polling on the last read.
- */
- while (len > 8) {
- ioread32_rep(info->mmio_base + NDDB, data, 8);
-
- ret = readl_relaxed_poll_timeout(info->mmio_base + NDSR, val,
- val & NDSR_RDDREQ, 1000, 5000);
- if (ret) {
- dev_err(&info->pdev->dev,
- "Timeout on RDDREQ while draining the FIFO\n");
- return;
- }
-
- data += 32;
- len -= 8;
- }
- }
-
- ioread32_rep(info->mmio_base + NDDB, data, len);
-}
-
-static void handle_data_pio(struct pxa3xx_nand_info *info)
-{
- switch (info->state) {
- case STATE_PIO_WRITING:
- if (info->step_chunk_size)
- writesl(info->mmio_base + NDDB,
- info->data_buff + info->data_buff_pos,
- DIV_ROUND_UP(info->step_chunk_size, 4));
-
- if (info->step_spare_size)
- writesl(info->mmio_base + NDDB,
- info->oob_buff + info->oob_buff_pos,
- DIV_ROUND_UP(info->step_spare_size, 4));
- break;
- case STATE_PIO_READING:
- if (info->step_chunk_size)
- drain_fifo(info,
- info->data_buff + info->data_buff_pos,
- DIV_ROUND_UP(info->step_chunk_size, 4));
-
- if (info->step_spare_size)
- drain_fifo(info,
- info->oob_buff + info->oob_buff_pos,
- DIV_ROUND_UP(info->step_spare_size, 4));
- break;
- default:
- dev_err(&info->pdev->dev, "%s: invalid state %d\n", __func__,
- info->state);
- BUG();
- }
-
- /* Update buffer pointers for multi-page read/write */
- info->data_buff_pos += info->step_chunk_size;
- info->oob_buff_pos += info->step_spare_size;
-}
-
-static void pxa3xx_nand_data_dma_irq(void *data)
-{
- struct pxa3xx_nand_info *info = data;
- struct dma_tx_state state;
- enum dma_status status;
-
- status = dmaengine_tx_status(info->dma_chan, info->dma_cookie, &state);
- if (likely(status == DMA_COMPLETE)) {
- info->state = STATE_DMA_DONE;
- } else {
- dev_err(&info->pdev->dev, "DMA error on data channel\n");
- info->retcode = ERR_DMABUSERR;
- }
- dma_unmap_sg(info->dma_chan->device->dev, &info->sg, 1, info->dma_dir);
-
- nand_writel(info, NDSR, NDSR_WRDREQ | NDSR_RDDREQ);
- enable_int(info, NDCR_INT_MASK);
-}
-
-static void start_data_dma(struct pxa3xx_nand_info *info)
-{
- enum dma_transfer_direction direction;
- struct dma_async_tx_descriptor *tx;
-
- switch (info->state) {
- case STATE_DMA_WRITING:
- info->dma_dir = DMA_TO_DEVICE;
- direction = DMA_MEM_TO_DEV;
- break;
- case STATE_DMA_READING:
- info->dma_dir = DMA_FROM_DEVICE;
- direction = DMA_DEV_TO_MEM;
- break;
- default:
- dev_err(&info->pdev->dev, "%s: invalid state %d\n", __func__,
- info->state);
- BUG();
- }
- info->sg.length = info->chunk_size;
- if (info->use_spare)
- info->sg.length += info->spare_size + info->ecc_size;
- dma_map_sg(info->dma_chan->device->dev, &info->sg, 1, info->dma_dir);
-
- tx = dmaengine_prep_slave_sg(info->dma_chan, &info->sg, 1, direction,
- DMA_PREP_INTERRUPT);
- if (!tx) {
- dev_err(&info->pdev->dev, "prep_slave_sg() failed\n");
- return;
- }
- tx->callback = pxa3xx_nand_data_dma_irq;
- tx->callback_param = info;
- info->dma_cookie = dmaengine_submit(tx);
- dma_async_issue_pending(info->dma_chan);
- dev_dbg(&info->pdev->dev, "%s(dir=%d cookie=%x size=%u)\n",
- __func__, direction, info->dma_cookie, info->sg.length);
-}
-
-static irqreturn_t pxa3xx_nand_irq_thread(int irq, void *data)
-{
- struct pxa3xx_nand_info *info = data;
-
- handle_data_pio(info);
-
- info->state = STATE_CMD_DONE;
- nand_writel(info, NDSR, NDSR_WRDREQ | NDSR_RDDREQ);
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t pxa3xx_nand_irq(int irq, void *devid)
-{
- struct pxa3xx_nand_info *info = devid;
- unsigned int status, is_completed = 0, is_ready = 0;
- unsigned int ready, cmd_done;
- irqreturn_t ret = IRQ_HANDLED;
-
- if (info->cs == 0) {
- ready = NDSR_FLASH_RDY;
- cmd_done = NDSR_CS0_CMDD;
- } else {
- ready = NDSR_RDY;
- cmd_done = NDSR_CS1_CMDD;
- }
-
- status = nand_readl(info, NDSR);
-
- if (status & NDSR_UNCORERR)
- info->retcode = ERR_UNCORERR;
- if (status & NDSR_CORERR) {
- info->retcode = ERR_CORERR;
- if ((info->variant == PXA3XX_NAND_VARIANT_ARMADA370 ||
- info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K) &&
- info->ecc_bch)
- info->ecc_err_cnt = NDSR_ERR_CNT(status);
- else
- info->ecc_err_cnt = 1;
-
- /*
- * Each chunk composing a page is corrected independently,
- * and we need to store maximum number of corrected bitflips
- * to return it to the MTD layer in ecc.read_page().
- */
- info->max_bitflips = max_t(unsigned int,
- info->max_bitflips,
- info->ecc_err_cnt);
- }
- if (status & (NDSR_RDDREQ | NDSR_WRDREQ)) {
- /* whether use dma to transfer data */
- if (info->use_dma) {
- disable_int(info, NDCR_INT_MASK);
- info->state = (status & NDSR_RDDREQ) ?
- STATE_DMA_READING : STATE_DMA_WRITING;
- start_data_dma(info);
- goto NORMAL_IRQ_EXIT;
- } else {
- info->state = (status & NDSR_RDDREQ) ?
- STATE_PIO_READING : STATE_PIO_WRITING;
- ret = IRQ_WAKE_THREAD;
- goto NORMAL_IRQ_EXIT;
- }
- }
- if (status & cmd_done) {
- info->state = STATE_CMD_DONE;
- is_completed = 1;
- }
- if (status & ready) {
- info->state = STATE_READY;
- is_ready = 1;
- }
-
- /*
- * Clear all status bit before issuing the next command, which
- * can and will alter the status bits and will deserve a new
- * interrupt on its own. This lets the controller exit the IRQ
- */
- nand_writel(info, NDSR, status);
-
- if (status & NDSR_WRCMDREQ) {
- status &= ~NDSR_WRCMDREQ;
- info->state = STATE_CMD_HANDLE;
-
- /*
- * Command buffer registers NDCB{0-2} (and optionally NDCB3)
- * must be loaded by writing directly either 12 or 16
- * bytes directly to NDCB0, four bytes at a time.
- *
- * Direct write access to NDCB1, NDCB2 and NDCB3 is ignored
- * but each NDCBx register can be read.
- */
- nand_writel(info, NDCB0, info->ndcb0);
- nand_writel(info, NDCB0, info->ndcb1);
- nand_writel(info, NDCB0, info->ndcb2);
-
- /* NDCB3 register is available in NFCv2 (Armada 370/XP SoC) */
- if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370 ||
- info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K)
- nand_writel(info, NDCB0, info->ndcb3);
- }
-
- if (is_completed)
- complete(&info->cmd_complete);
- if (is_ready)
- complete(&info->dev_ready);
-NORMAL_IRQ_EXIT:
- return ret;
-}
-
-static inline int is_buf_blank(uint8_t *buf, size_t len)
-{
- for (; len > 0; len--)
- if (*buf++ != 0xff)
- return 0;
- return 1;
-}
-
-static void set_command_address(struct pxa3xx_nand_info *info,
- unsigned int page_size, uint16_t column, int page_addr)
-{
- /* small page addr setting */
- if (page_size < PAGE_CHUNK_SIZE) {
- info->ndcb1 = ((page_addr & 0xFFFFFF) << 8)
- | (column & 0xFF);
-
- info->ndcb2 = 0;
- } else {
- info->ndcb1 = ((page_addr & 0xFFFF) << 16)
- | (column & 0xFFFF);
-
- if (page_addr & 0xFF0000)
- info->ndcb2 = (page_addr & 0xFF0000) >> 16;
- else
- info->ndcb2 = 0;
- }
-}
-
-static void prepare_start_command(struct pxa3xx_nand_info *info, int command)
-{
- struct pxa3xx_nand_host *host = info->host[info->cs];
- struct mtd_info *mtd = nand_to_mtd(&host->chip);
-
- /* reset data and oob column point to handle data */
- info->buf_start = 0;
- info->buf_count = 0;
- info->data_buff_pos = 0;
- info->oob_buff_pos = 0;
- info->step_chunk_size = 0;
- info->step_spare_size = 0;
- info->cur_chunk = 0;
- info->use_ecc = 0;
- info->use_spare = 1;
- info->retcode = ERR_NONE;
- info->ecc_err_cnt = 0;
- info->ndcb3 = 0;
- info->need_wait = 0;
-
- switch (command) {
- case NAND_CMD_READ0:
- case NAND_CMD_PAGEPROG:
- info->use_ecc = 1;
- break;
- case NAND_CMD_PARAM:
- info->use_spare = 0;
- break;
- default:
- info->ndcb1 = 0;
- info->ndcb2 = 0;
- break;
- }
-
- /*
- * If we are about to issue a read command, or about to set
- * the write address, then clean the data buffer.
- */
- if (command == NAND_CMD_READ0 ||
- command == NAND_CMD_READOOB ||
- command == NAND_CMD_SEQIN) {
-
- info->buf_count = mtd->writesize + mtd->oobsize;
- memset(info->data_buff, 0xFF, info->buf_count);
- }
-
-}
-
-static int prepare_set_command(struct pxa3xx_nand_info *info, int command,
- int ext_cmd_type, uint16_t column, int page_addr)
-{
- int addr_cycle, exec_cmd;
- struct pxa3xx_nand_host *host;
- struct mtd_info *mtd;
-
- host = info->host[info->cs];
- mtd = nand_to_mtd(&host->chip);
- addr_cycle = 0;
- exec_cmd = 1;
-
- if (info->cs != 0)
- info->ndcb0 = NDCB0_CSEL;
- else
- info->ndcb0 = 0;
-
- if (command == NAND_CMD_SEQIN)
- exec_cmd = 0;
-
- addr_cycle = NDCB0_ADDR_CYC(host->row_addr_cycles
- + host->col_addr_cycles);
-
- switch (command) {
- case NAND_CMD_READOOB:
- case NAND_CMD_READ0:
- info->buf_start = column;
- info->ndcb0 |= NDCB0_CMD_TYPE(0)
- | addr_cycle
- | NAND_CMD_READ0;
-
- if (command == NAND_CMD_READOOB)
- info->buf_start += mtd->writesize;
-
- if (info->cur_chunk < info->nfullchunks) {
- info->step_chunk_size = info->chunk_size;
- info->step_spare_size = info->spare_size;
- } else {
- info->step_chunk_size = info->last_chunk_size;
- info->step_spare_size = info->last_spare_size;
- }
-
- /*
- * Multiple page read needs an 'extended command type' field,
- * which is either naked-read or last-read according to the
- * state.
- */
- if (mtd->writesize == PAGE_CHUNK_SIZE) {
- info->ndcb0 |= NDCB0_DBC | (NAND_CMD_READSTART << 8);
- } else if (mtd->writesize > PAGE_CHUNK_SIZE) {
- info->ndcb0 |= NDCB0_DBC | (NAND_CMD_READSTART << 8)
- | NDCB0_LEN_OVRD
- | NDCB0_EXT_CMD_TYPE(ext_cmd_type);
- info->ndcb3 = info->step_chunk_size +
- info->step_spare_size;
- }
-
- set_command_address(info, mtd->writesize, column, page_addr);
- break;
-
- case NAND_CMD_SEQIN:
-
- info->buf_start = column;
- set_command_address(info, mtd->writesize, 0, page_addr);
-
- /*
- * Multiple page programming needs to execute the initial
- * SEQIN command that sets the page address.
- */
- if (mtd->writesize > PAGE_CHUNK_SIZE) {
- info->ndcb0 |= NDCB0_CMD_TYPE(0x1)
- | NDCB0_EXT_CMD_TYPE(ext_cmd_type)
- | addr_cycle
- | command;
- exec_cmd = 1;
- }
- break;
-
- case NAND_CMD_PAGEPROG:
- if (is_buf_blank(info->data_buff,
- (mtd->writesize + mtd->oobsize))) {
- exec_cmd = 0;
- break;
- }
-
- if (info->cur_chunk < info->nfullchunks) {
- info->step_chunk_size = info->chunk_size;
- info->step_spare_size = info->spare_size;
- } else {
- info->step_chunk_size = info->last_chunk_size;
- info->step_spare_size = info->last_spare_size;
- }
-
- /* Second command setting for large pages */
- if (mtd->writesize > PAGE_CHUNK_SIZE) {
- /*
- * Multiple page write uses the 'extended command'
- * field. This can be used to issue a command dispatch
- * or a naked-write depending on the current stage.
- */
- info->ndcb0 |= NDCB0_CMD_TYPE(0x1)
- | NDCB0_LEN_OVRD
- | NDCB0_EXT_CMD_TYPE(ext_cmd_type);
- info->ndcb3 = info->step_chunk_size +
- info->step_spare_size;
-
- /*
- * This is the command dispatch that completes a chunked
- * page program operation.
- */
- if (info->cur_chunk == info->ntotalchunks) {
- info->ndcb0 = NDCB0_CMD_TYPE(0x1)
- | NDCB0_EXT_CMD_TYPE(ext_cmd_type)
- | command;
- info->ndcb1 = 0;
- info->ndcb2 = 0;
- info->ndcb3 = 0;
- }
- } else {
- info->ndcb0 |= NDCB0_CMD_TYPE(0x1)
- | NDCB0_AUTO_RS
- | NDCB0_ST_ROW_EN
- | NDCB0_DBC
- | (NAND_CMD_PAGEPROG << 8)
- | NAND_CMD_SEQIN
- | addr_cycle;
- }
- break;
-
- case NAND_CMD_PARAM:
- info->buf_count = INIT_BUFFER_SIZE;
- info->ndcb0 |= NDCB0_CMD_TYPE(0)
- | NDCB0_ADDR_CYC(1)
- | NDCB0_LEN_OVRD
- | command;
- info->ndcb1 = (column & 0xFF);
- info->ndcb3 = INIT_BUFFER_SIZE;
- info->step_chunk_size = INIT_BUFFER_SIZE;
- break;
-
- case NAND_CMD_READID:
- info->buf_count = READ_ID_BYTES;
- info->ndcb0 |= NDCB0_CMD_TYPE(3)
- | NDCB0_ADDR_CYC(1)
- | command;
- info->ndcb1 = (column & 0xFF);
-
- info->step_chunk_size = 8;
- break;
- case NAND_CMD_STATUS:
- info->buf_count = 1;
- info->ndcb0 |= NDCB0_CMD_TYPE(4)
- | NDCB0_ADDR_CYC(1)
- | command;
-
- info->step_chunk_size = 8;
- break;
-
- case NAND_CMD_ERASE1:
- info->ndcb0 |= NDCB0_CMD_TYPE(2)
- | NDCB0_AUTO_RS
- | NDCB0_ADDR_CYC(3)
- | NDCB0_DBC
- | (NAND_CMD_ERASE2 << 8)
- | NAND_CMD_ERASE1;
- info->ndcb1 = page_addr;
- info->ndcb2 = 0;
-
- break;
- case NAND_CMD_RESET:
- info->ndcb0 |= NDCB0_CMD_TYPE(5)
- | command;
-
- break;
-
- case NAND_CMD_ERASE2:
- exec_cmd = 0;
- break;
-
- default:
- exec_cmd = 0;
- dev_err(&info->pdev->dev, "non-supported command %x\n",
- command);
- break;
- }
-
- return exec_cmd;
-}
-
-static void nand_cmdfunc(struct mtd_info *mtd, unsigned command,
- int column, int page_addr)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
- struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
- struct pxa3xx_nand_info *info = host->info_data;
- int exec_cmd;
-
- /*
- * if this is a x16 device ,then convert the input
- * "byte" address into a "word" address appropriate
- * for indexing a word-oriented device
- */
- if (info->reg_ndcr & NDCR_DWIDTH_M)
- column /= 2;
-
- /*
- * There may be different NAND chip hooked to
- * different chip select, so check whether
- * chip select has been changed, if yes, reset the timing
- */
- if (info->cs != host->cs) {
- info->cs = host->cs;
- nand_writel(info, NDTR0CS0, info->ndtr0cs0);
- nand_writel(info, NDTR1CS0, info->ndtr1cs0);
- }
-
- prepare_start_command(info, command);
-
- info->state = STATE_PREPARED;
- exec_cmd = prepare_set_command(info, command, 0, column, page_addr);
-
- if (exec_cmd) {
- init_completion(&info->cmd_complete);
- init_completion(&info->dev_ready);
- info->need_wait = 1;
- pxa3xx_nand_start(info);
-
- if (!wait_for_completion_timeout(&info->cmd_complete,
- CHIP_DELAY_TIMEOUT)) {
- dev_err(&info->pdev->dev, "Wait time out!!!\n");
- /* Stop State Machine for next command cycle */
- pxa3xx_nand_stop(info);
- }
- }
- info->state = STATE_IDLE;
-}
-
-static void nand_cmdfunc_extended(struct mtd_info *mtd,
- const unsigned command,
- int column, int page_addr)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
- struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
- struct pxa3xx_nand_info *info = host->info_data;
- int exec_cmd, ext_cmd_type;
-
- /*
- * if this is a x16 device then convert the input
- * "byte" address into a "word" address appropriate
- * for indexing a word-oriented device
- */
- if (info->reg_ndcr & NDCR_DWIDTH_M)
- column /= 2;
-
- /*
- * There may be different NAND chip hooked to
- * different chip select, so check whether
- * chip select has been changed, if yes, reset the timing
- */
- if (info->cs != host->cs) {
- info->cs = host->cs;
- nand_writel(info, NDTR0CS0, info->ndtr0cs0);
- nand_writel(info, NDTR1CS0, info->ndtr1cs0);
- }
-
- /* Select the extended command for the first command */
- switch (command) {
- case NAND_CMD_READ0:
- case NAND_CMD_READOOB:
- ext_cmd_type = EXT_CMD_TYPE_MONO;
- break;
- case NAND_CMD_SEQIN:
- ext_cmd_type = EXT_CMD_TYPE_DISPATCH;
- break;
- case NAND_CMD_PAGEPROG:
- ext_cmd_type = EXT_CMD_TYPE_NAKED_RW;
- break;
- default:
- ext_cmd_type = 0;
- break;
- }
-
- prepare_start_command(info, command);
-
- /*
- * Prepare the "is ready" completion before starting a command
- * transaction sequence. If the command is not executed the
- * completion will be completed, see below.
- *
- * We can do that inside the loop because the command variable
- * is invariant and thus so is the exec_cmd.
- */
- info->need_wait = 1;
- init_completion(&info->dev_ready);
- do {
- info->state = STATE_PREPARED;
-
- exec_cmd = prepare_set_command(info, command, ext_cmd_type,
- column, page_addr);
- if (!exec_cmd) {
- info->need_wait = 0;
- complete(&info->dev_ready);
- break;
- }
-
- init_completion(&info->cmd_complete);
- pxa3xx_nand_start(info);
-
- if (!wait_for_completion_timeout(&info->cmd_complete,
- CHIP_DELAY_TIMEOUT)) {
- dev_err(&info->pdev->dev, "Wait time out!!!\n");
- /* Stop State Machine for next command cycle */
- pxa3xx_nand_stop(info);
- break;
- }
-
- /* Only a few commands need several steps */
- if (command != NAND_CMD_PAGEPROG &&
- command != NAND_CMD_READ0 &&
- command != NAND_CMD_READOOB)
- break;
-
- info->cur_chunk++;
-
- /* Check if the sequence is complete */
- if (info->cur_chunk == info->ntotalchunks && command != NAND_CMD_PAGEPROG)
- break;
-
- /*
- * After a splitted program command sequence has issued
- * the command dispatch, the command sequence is complete.
- */
- if (info->cur_chunk == (info->ntotalchunks + 1) &&
- command == NAND_CMD_PAGEPROG &&
- ext_cmd_type == EXT_CMD_TYPE_DISPATCH)
- break;
-
- if (command == NAND_CMD_READ0 || command == NAND_CMD_READOOB) {
- /* Last read: issue a 'last naked read' */
- if (info->cur_chunk == info->ntotalchunks - 1)
- ext_cmd_type = EXT_CMD_TYPE_LAST_RW;
- else
- ext_cmd_type = EXT_CMD_TYPE_NAKED_RW;
-
- /*
- * If a splitted program command has no more data to transfer,
- * the command dispatch must be issued to complete.
- */
- } else if (command == NAND_CMD_PAGEPROG &&
- info->cur_chunk == info->ntotalchunks) {
- ext_cmd_type = EXT_CMD_TYPE_DISPATCH;
- }
- } while (1);
-
- info->state = STATE_IDLE;
-}
-
-static int pxa3xx_nand_write_page_hwecc(struct mtd_info *mtd,
- struct nand_chip *chip, const uint8_t *buf, int oob_required,
- int page)
-{
- nand_prog_page_begin_op(chip, page, 0, buf, mtd->writesize);
- chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
-
- return nand_prog_page_end_op(chip);
-}
-
-static int pxa3xx_nand_read_page_hwecc(struct mtd_info *mtd,
- struct nand_chip *chip, uint8_t *buf, int oob_required,
- int page)
-{
- struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
- struct pxa3xx_nand_info *info = host->info_data;
-
- nand_read_page_op(chip, page, 0, buf, mtd->writesize);
- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
-
- if (info->retcode == ERR_CORERR && info->use_ecc) {
- mtd->ecc_stats.corrected += info->ecc_err_cnt;
-
- } else if (info->retcode == ERR_UNCORERR) {
- /*
- * for blank page (all 0xff), HW will calculate its ECC as
- * 0, which is different from the ECC information within
- * OOB, ignore such uncorrectable errors
- */
- if (is_buf_blank(buf, mtd->writesize))
- info->retcode = ERR_NONE;
- else
- mtd->ecc_stats.failed++;
- }
-
- return info->max_bitflips;
-}
-
-static uint8_t pxa3xx_nand_read_byte(struct mtd_info *mtd)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
- struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
- struct pxa3xx_nand_info *info = host->info_data;
- char retval = 0xFF;
-
- if (info->buf_start < info->buf_count)
- /* Has just send a new command? */
- retval = info->data_buff[info->buf_start++];
-
- return retval;
-}
-
-static u16 pxa3xx_nand_read_word(struct mtd_info *mtd)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
- struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
- struct pxa3xx_nand_info *info = host->info_data;
- u16 retval = 0xFFFF;
-
- if (!(info->buf_start & 0x01) && info->buf_start < info->buf_count) {
- retval = *((u16 *)(info->data_buff+info->buf_start));
- info->buf_start += 2;
- }
- return retval;
-}
-
-static void pxa3xx_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
- struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
- struct pxa3xx_nand_info *info = host->info_data;
- int real_len = min_t(size_t, len, info->buf_count - info->buf_start);
-
- memcpy(buf, info->data_buff + info->buf_start, real_len);
- info->buf_start += real_len;
-}
-
-static void pxa3xx_nand_write_buf(struct mtd_info *mtd,
- const uint8_t *buf, int len)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
- struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
- struct pxa3xx_nand_info *info = host->info_data;
- int real_len = min_t(size_t, len, info->buf_count - info->buf_start);
-
- memcpy(info->data_buff + info->buf_start, buf, real_len);
- info->buf_start += real_len;
-}
-
-static void pxa3xx_nand_select_chip(struct mtd_info *mtd, int chip)
-{
- return;
-}
-
-static int pxa3xx_nand_waitfunc(struct mtd_info *mtd, struct nand_chip *this)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
- struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
- struct pxa3xx_nand_info *info = host->info_data;
-
- if (info->need_wait) {
- info->need_wait = 0;
- if (!wait_for_completion_timeout(&info->dev_ready,
- CHIP_DELAY_TIMEOUT)) {
- dev_err(&info->pdev->dev, "Ready time out!!!\n");
- return NAND_STATUS_FAIL;
- }
- }
-
- /* pxa3xx_nand_send_command has waited for command complete */
- if (this->state == FL_WRITING || this->state == FL_ERASING) {
- if (info->retcode == ERR_NONE)
- return 0;
- else
- return NAND_STATUS_FAIL;
- }
-
- return NAND_STATUS_READY;
-}
-
-static int pxa3xx_nand_config_ident(struct pxa3xx_nand_info *info)
-{
- struct pxa3xx_nand_host *host = info->host[info->cs];
- struct platform_device *pdev = info->pdev;
- struct pxa3xx_nand_platform_data *pdata = dev_get_platdata(&pdev->dev);
- const struct nand_sdr_timings *timings;
-
- /* Configure default flash values */
- info->chunk_size = PAGE_CHUNK_SIZE;
- info->reg_ndcr = 0x0; /* enable all interrupts */
- info->reg_ndcr |= (pdata->enable_arbiter) ? NDCR_ND_ARB_EN : 0;
- info->reg_ndcr |= NDCR_RD_ID_CNT(READ_ID_BYTES);
- info->reg_ndcr |= NDCR_SPARE_EN;
-
- /* use the common timing to make a try */
- timings = onfi_async_timing_mode_to_sdr_timings(0);
- if (IS_ERR(timings))
- return PTR_ERR(timings);
-
- pxa3xx_nand_set_sdr_timing(host, timings);
- return 0;
-}
-
-static void pxa3xx_nand_config_tail(struct pxa3xx_nand_info *info)
-{
- struct pxa3xx_nand_host *host = info->host[info->cs];
- struct nand_chip *chip = &host->chip;
- struct mtd_info *mtd = nand_to_mtd(chip);
-
- info->reg_ndcr |= (host->col_addr_cycles == 2) ? NDCR_RA_START : 0;
- info->reg_ndcr |= (chip->page_shift == 6) ? NDCR_PG_PER_BLK : 0;
- info->reg_ndcr |= (mtd->writesize == 2048) ? NDCR_PAGE_SZ : 0;
-}
-
-static void pxa3xx_nand_detect_config(struct pxa3xx_nand_info *info)
-{
- struct platform_device *pdev = info->pdev;
- struct pxa3xx_nand_platform_data *pdata = dev_get_platdata(&pdev->dev);
- uint32_t ndcr = nand_readl(info, NDCR);
-
- /* Set an initial chunk size */
- info->chunk_size = ndcr & NDCR_PAGE_SZ ? 2048 : 512;
- info->reg_ndcr = ndcr &
- ~(NDCR_INT_MASK | NDCR_ND_ARB_EN | NFCV1_NDCR_ARB_CNTL);
- info->reg_ndcr |= (pdata->enable_arbiter) ? NDCR_ND_ARB_EN : 0;
- info->ndtr0cs0 = nand_readl(info, NDTR0CS0);
- info->ndtr1cs0 = nand_readl(info, NDTR1CS0);
-}
-
-static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info)
-{
- struct platform_device *pdev = info->pdev;
- struct dma_slave_config config;
- dma_cap_mask_t mask;
- struct pxad_param param;
- int ret;
-
- info->data_buff = kmalloc(info->buf_size, GFP_KERNEL);
- if (info->data_buff == NULL)
- return -ENOMEM;
- if (use_dma == 0)
- return 0;
-
- ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
- if (ret)
- return ret;
-
- sg_init_one(&info->sg, info->data_buff, info->buf_size);
- dma_cap_zero(mask);
- dma_cap_set(DMA_SLAVE, mask);
- param.prio = PXAD_PRIO_LOWEST;
- param.drcmr = info->drcmr_dat;
- info->dma_chan = dma_request_slave_channel_compat(mask, pxad_filter_fn,
- ¶m, &pdev->dev,
- "data");
- if (!info->dma_chan) {
- dev_err(&pdev->dev, "unable to request data dma channel\n");
- return -ENODEV;
- }
-
- memset(&config, 0, sizeof(config));
- config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
- config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
- config.src_addr = info->mmio_phys + NDDB;
- config.dst_addr = info->mmio_phys + NDDB;
- config.src_maxburst = 32;
- config.dst_maxburst = 32;
- ret = dmaengine_slave_config(info->dma_chan, &config);
- if (ret < 0) {
- dev_err(&info->pdev->dev,
- "dma channel configuration failed: %d\n",
- ret);
- return ret;
- }
-
- /*
- * Now that DMA buffers are allocated we turn on
- * DMA proper for I/O operations.
- */
- info->use_dma = 1;
- return 0;
-}
-
-static void pxa3xx_nand_free_buff(struct pxa3xx_nand_info *info)
-{
- if (info->use_dma) {
- dmaengine_terminate_all(info->dma_chan);
- dma_release_channel(info->dma_chan);
- }
- kfree(info->data_buff);
-}
-
-static int pxa_ecc_init(struct pxa3xx_nand_info *info,
- struct mtd_info *mtd,
- int strength, int ecc_stepsize, int page_size)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
- struct nand_ecc_ctrl *ecc = &chip->ecc;
-
- if (strength == 1 && ecc_stepsize == 512 && page_size == 2048) {
- info->nfullchunks = 1;
- info->ntotalchunks = 1;
- info->chunk_size = 2048;
- info->spare_size = 40;
- info->ecc_size = 24;
- ecc->mode = NAND_ECC_HW;
- ecc->size = 512;
- ecc->strength = 1;
-
- } else if (strength == 1 && ecc_stepsize == 512 && page_size == 512) {
- info->nfullchunks = 1;
- info->ntotalchunks = 1;
- info->chunk_size = 512;
- info->spare_size = 8;
- info->ecc_size = 8;
- ecc->mode = NAND_ECC_HW;
- ecc->size = 512;
- ecc->strength = 1;
-
- /*
- * Required ECC: 4-bit correction per 512 bytes
- * Select: 16-bit correction per 2048 bytes
- */
- } else if (strength == 4 && ecc_stepsize == 512 && page_size == 2048) {
- info->ecc_bch = 1;
- info->nfullchunks = 1;
- info->ntotalchunks = 1;
- info->chunk_size = 2048;
- info->spare_size = 32;
- info->ecc_size = 32;
- ecc->mode = NAND_ECC_HW;
- ecc->size = info->chunk_size;
- mtd_set_ooblayout(mtd, &pxa3xx_ooblayout_ops);
- ecc->strength = 16;
-
- } else if (strength == 4 && ecc_stepsize == 512 && page_size == 4096) {
- info->ecc_bch = 1;
- info->nfullchunks = 2;
- info->ntotalchunks = 2;
- info->chunk_size = 2048;
- info->spare_size = 32;
- info->ecc_size = 32;
- ecc->mode = NAND_ECC_HW;
- ecc->size = info->chunk_size;
- mtd_set_ooblayout(mtd, &pxa3xx_ooblayout_ops);
- ecc->strength = 16;
-
- /*
- * Required ECC: 8-bit correction per 512 bytes
- * Select: 16-bit correction per 1024 bytes
- */
- } else if (strength == 8 && ecc_stepsize == 512 && page_size == 4096) {
- info->ecc_bch = 1;
- info->nfullchunks = 4;
- info->ntotalchunks = 5;
- info->chunk_size = 1024;
- info->spare_size = 0;
- info->last_chunk_size = 0;
- info->last_spare_size = 64;
- info->ecc_size = 32;
- ecc->mode = NAND_ECC_HW;
- ecc->size = info->chunk_size;
- mtd_set_ooblayout(mtd, &pxa3xx_ooblayout_ops);
- ecc->strength = 16;
- } else {
- dev_err(&info->pdev->dev,
- "ECC strength %d at page size %d is not supported\n",
- strength, page_size);
- return -ENODEV;
- }
-
- dev_info(&info->pdev->dev, "ECC strength %d, ECC step size %d\n",
- ecc->strength, ecc->size);
- return 0;
-}
-
-static int pxa3xx_nand_scan(struct mtd_info *mtd)
-{
- struct nand_chip *chip = mtd_to_nand(mtd);
- struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
- struct pxa3xx_nand_info *info = host->info_data;
- struct platform_device *pdev = info->pdev;
- struct pxa3xx_nand_platform_data *pdata = dev_get_platdata(&pdev->dev);
- int ret;
- uint16_t ecc_strength, ecc_step;
-
- if (pdata->keep_config) {
- pxa3xx_nand_detect_config(info);
- } else {
- ret = pxa3xx_nand_config_ident(info);
- if (ret)
- return ret;
- }
-
- if (info->reg_ndcr & NDCR_DWIDTH_M)
- chip->options |= NAND_BUSWIDTH_16;
-
- /* Device detection must be done with ECC disabled */
- if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370 ||
- info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K)
- nand_writel(info, NDECCCTRL, 0x0);
-
- if (pdata->flash_bbt)
- chip->bbt_options |= NAND_BBT_USE_FLASH;
-
- chip->ecc.strength = pdata->ecc_strength;
- chip->ecc.size = pdata->ecc_step_size;
-
- ret = nand_scan_ident(mtd, 1, NULL);
- if (ret)
- return ret;
-
- if (!pdata->keep_config) {
- ret = pxa3xx_nand_init(host);
- if (ret) {
- dev_err(&info->pdev->dev, "Failed to init nand: %d\n",
- ret);
- return ret;
- }
- }
-
- if (chip->bbt_options & NAND_BBT_USE_FLASH) {
- /*
- * We'll use a bad block table stored in-flash and don't
- * allow writing the bad block marker to the flash.
- */
- chip->bbt_options |= NAND_BBT_NO_OOB_BBM;
- chip->bbt_td = &bbt_main_descr;
- chip->bbt_md = &bbt_mirror_descr;
- }
-
- /*
- * If the page size is bigger than the FIFO size, let's check
- * we are given the right variant and then switch to the extended
- * (aka splitted) command handling,
- */
- if (mtd->writesize > PAGE_CHUNK_SIZE) {
- if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370 ||
- info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K) {
- chip->cmdfunc = nand_cmdfunc_extended;
- } else {
- dev_err(&info->pdev->dev,
- "unsupported page size on this variant\n");
- return -ENODEV;
- }
- }
-
- ecc_strength = chip->ecc.strength;
- ecc_step = chip->ecc.size;
- if (!ecc_strength || !ecc_step) {
- ecc_strength = chip->ecc_strength_ds;
- ecc_step = chip->ecc_step_ds;
- }
-
- /* Set default ECC strength requirements on non-ONFI devices */
- if (ecc_strength < 1 && ecc_step < 1) {
- ecc_strength = 1;
- ecc_step = 512;
- }
-
- ret = pxa_ecc_init(info, mtd, ecc_strength,
- ecc_step, mtd->writesize);
- if (ret)
- return ret;
-
- /* calculate addressing information */
- if (mtd->writesize >= 2048)
- host->col_addr_cycles = 2;
- else
- host->col_addr_cycles = 1;
-
- /* release the initial buffer */
- kfree(info->data_buff);
-
- /* allocate the real data + oob buffer */
- info->buf_size = mtd->writesize + mtd->oobsize;
- ret = pxa3xx_nand_init_buff(info);
- if (ret)
- return ret;
- info->oob_buff = info->data_buff + mtd->writesize;
-
- if ((mtd->size >> chip->page_shift) > 65536)
- host->row_addr_cycles = 3;
- else
- host->row_addr_cycles = 2;
-
- if (!pdata->keep_config)
- pxa3xx_nand_config_tail(info);
-
- return nand_scan_tail(mtd);
-}
-
-static int alloc_nand_resource(struct platform_device *pdev)
-{
- struct device_node *np = pdev->dev.of_node;
- struct pxa3xx_nand_platform_data *pdata;
- struct pxa3xx_nand_info *info;
- struct pxa3xx_nand_host *host;
- struct nand_chip *chip = NULL;
- struct mtd_info *mtd;
- struct resource *r;
- int ret, irq, cs;
-
- pdata = dev_get_platdata(&pdev->dev);
- if (pdata->num_cs <= 0) {
- dev_err(&pdev->dev, "invalid number of chip selects\n");
- return -ENODEV;
- }
-
- info = devm_kzalloc(&pdev->dev,
- sizeof(*info) + sizeof(*host) * pdata->num_cs,
- GFP_KERNEL);
- if (!info)
- return -ENOMEM;
-
- info->pdev = pdev;
- info->variant = pxa3xx_nand_get_variant(pdev);
- for (cs = 0; cs < pdata->num_cs; cs++) {
- host = (void *)&info[1] + sizeof(*host) * cs;
- chip = &host->chip;
- nand_set_controller_data(chip, host);
- mtd = nand_to_mtd(chip);
- info->host[cs] = host;
- host->cs = cs;
- host->info_data = info;
- mtd->dev.parent = &pdev->dev;
- /* FIXME: all chips use the same device tree partitions */
- nand_set_flash_node(chip, np);
-
- nand_set_controller_data(chip, host);
- chip->ecc.read_page = pxa3xx_nand_read_page_hwecc;
- chip->ecc.write_page = pxa3xx_nand_write_page_hwecc;
- chip->controller = &info->controller;
- chip->waitfunc = pxa3xx_nand_waitfunc;
- chip->select_chip = pxa3xx_nand_select_chip;
- chip->read_word = pxa3xx_nand_read_word;
- chip->read_byte = pxa3xx_nand_read_byte;
- chip->read_buf = pxa3xx_nand_read_buf;
- chip->write_buf = pxa3xx_nand_write_buf;
- chip->options |= NAND_NO_SUBPAGE_WRITE;
- chip->cmdfunc = nand_cmdfunc;
- chip->onfi_set_features = nand_onfi_get_set_features_notsupp;
- chip->onfi_get_features = nand_onfi_get_set_features_notsupp;
- }
-
- nand_hw_control_init(chip->controller);
- info->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(info->clk)) {
- ret = PTR_ERR(info->clk);
- dev_err(&pdev->dev, "failed to get nand clock: %d\n", ret);
- return ret;
- }
- ret = clk_prepare_enable(info->clk);
- if (ret < 0)
- return ret;
-
- if (!np && use_dma) {
- r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
- if (r == NULL) {
- dev_err(&pdev->dev,
- "no resource defined for data DMA\n");
- ret = -ENXIO;
- goto fail_disable_clk;
- }
- info->drcmr_dat = r->start;
- }
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
- dev_err(&pdev->dev, "no IRQ resource defined\n");
- ret = -ENXIO;
- goto fail_disable_clk;
- }
-
- r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- info->mmio_base = devm_ioremap_resource(&pdev->dev, r);
- if (IS_ERR(info->mmio_base)) {
- ret = PTR_ERR(info->mmio_base);
- dev_err(&pdev->dev, "failed to map register space: %d\n", ret);
- goto fail_disable_clk;
- }
- info->mmio_phys = r->start;
-
- /* Allocate a buffer to allow flash detection */
- info->buf_size = INIT_BUFFER_SIZE;
- info->data_buff = kmalloc(info->buf_size, GFP_KERNEL);
- if (info->data_buff == NULL) {
- ret = -ENOMEM;
- goto fail_disable_clk;
- }
-
- /* initialize all interrupts to be disabled */
- disable_int(info, NDSR_MASK);
-
- ret = request_threaded_irq(irq, pxa3xx_nand_irq,
- pxa3xx_nand_irq_thread, IRQF_ONESHOT,
- pdev->name, info);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to request IRQ: %d\n", ret);
- goto fail_free_buf;
- }
-
- platform_set_drvdata(pdev, info);
-
- return 0;
-
-fail_free_buf:
- free_irq(irq, info);
- kfree(info->data_buff);
-fail_disable_clk:
- clk_disable_unprepare(info->clk);
- return ret;
-}
-
-static int pxa3xx_nand_remove(struct platform_device *pdev)
-{
- struct pxa3xx_nand_info *info = platform_get_drvdata(pdev);
- struct pxa3xx_nand_platform_data *pdata;
- int irq, cs;
-
- if (!info)
- return 0;
-
- pdata = dev_get_platdata(&pdev->dev);
-
- irq = platform_get_irq(pdev, 0);
- if (irq >= 0)
- free_irq(irq, info);
- pxa3xx_nand_free_buff(info);
-
- /*
- * In the pxa3xx case, the DFI bus is shared between the SMC and NFC.
- * In order to prevent a lockup of the system bus, the DFI bus
- * arbitration is granted to SMC upon driver removal. This is done by
- * setting the x_ARB_CNTL bit, which also prevents the NAND to have
- * access to the bus anymore.
- */
- nand_writel(info, NDCR,
- (nand_readl(info, NDCR) & ~NDCR_ND_ARB_EN) |
- NFCV1_NDCR_ARB_CNTL);
- clk_disable_unprepare(info->clk);
-
- for (cs = 0; cs < pdata->num_cs; cs++)
- nand_release(nand_to_mtd(&info->host[cs]->chip));
- return 0;
-}
-
-static int pxa3xx_nand_probe_dt(struct platform_device *pdev)
-{
- struct pxa3xx_nand_platform_data *pdata;
- struct device_node *np = pdev->dev.of_node;
- const struct of_device_id *of_id =
- of_match_device(pxa3xx_nand_dt_ids, &pdev->dev);
-
- if (!of_id)
- return 0;
-
- /*
- * Some SoCs like A7k/A8k need to enable manually the NAND
- * controller to avoid being bootloader dependent. This is done
- * through the use of a single bit in the System Functions registers.
- */
- if (pxa3xx_nand_get_variant(pdev) == PXA3XX_NAND_VARIANT_ARMADA_8K) {
- struct regmap *sysctrl_base = syscon_regmap_lookup_by_phandle(
- pdev->dev.of_node, "marvell,system-controller");
- u32 reg;
-
- if (IS_ERR(sysctrl_base))
- return PTR_ERR(sysctrl_base);
-
- regmap_read(sysctrl_base, GENCONF_SOC_DEVICE_MUX, ®);
- reg |= GENCONF_SOC_DEVICE_MUX_NFC_EN;
- regmap_write(sysctrl_base, GENCONF_SOC_DEVICE_MUX, reg);
- }
-
- pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata)
- return -ENOMEM;
-
- if (of_get_property(np, "marvell,nand-enable-arbiter", NULL))
- pdata->enable_arbiter = 1;
- if (of_get_property(np, "marvell,nand-keep-config", NULL))
- pdata->keep_config = 1;
- of_property_read_u32(np, "num-cs", &pdata->num_cs);
-
- pdev->dev.platform_data = pdata;
-
- return 0;
-}
-
-static int pxa3xx_nand_probe(struct platform_device *pdev)
-{
- struct pxa3xx_nand_platform_data *pdata;
- struct pxa3xx_nand_info *info;
- int ret, cs, probe_success, dma_available;
-
- dma_available = IS_ENABLED(CONFIG_ARM) &&
- (IS_ENABLED(CONFIG_ARCH_PXA) || IS_ENABLED(CONFIG_ARCH_MMP));
- if (use_dma && !dma_available) {
- use_dma = 0;
- dev_warn(&pdev->dev,
- "This platform can't do DMA on this device\n");
- }
-
- ret = pxa3xx_nand_probe_dt(pdev);
- if (ret)
- return ret;
-
- pdata = dev_get_platdata(&pdev->dev);
- if (!pdata) {
- dev_err(&pdev->dev, "no platform data defined\n");
- return -ENODEV;
- }
-
- ret = alloc_nand_resource(pdev);
- if (ret)
- return ret;
-
- info = platform_get_drvdata(pdev);
- probe_success = 0;
- for (cs = 0; cs < pdata->num_cs; cs++) {
- struct mtd_info *mtd = nand_to_mtd(&info->host[cs]->chip);
-
- /*
- * The mtd name matches the one used in 'mtdparts' kernel
- * parameter. This name cannot be changed or otherwise
- * user's mtd partitions configuration would get broken.
- */
- mtd->name = "pxa3xx_nand-0";
- info->cs = cs;
- ret = pxa3xx_nand_scan(mtd);
- if (ret) {
- dev_warn(&pdev->dev, "failed to scan nand at cs %d\n",
- cs);
- continue;
- }
-
- ret = mtd_device_register(mtd, pdata->parts[cs],
- pdata->nr_parts[cs]);
- if (!ret)
- probe_success = 1;
- }
-
- if (!probe_success) {
- pxa3xx_nand_remove(pdev);
- return -ENODEV;
- }
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int pxa3xx_nand_suspend(struct device *dev)
-{
- struct pxa3xx_nand_info *info = dev_get_drvdata(dev);
-
- if (info->state) {
- dev_err(dev, "driver busy, state = %d\n", info->state);
- return -EAGAIN;
- }
-
- clk_disable(info->clk);
- return 0;
-}
-
-static int pxa3xx_nand_resume(struct device *dev)
-{
- struct pxa3xx_nand_info *info = dev_get_drvdata(dev);
- int ret;
-
- ret = clk_enable(info->clk);
- if (ret < 0)
- return ret;
-
- /* We don't want to handle interrupt without calling mtd routine */
- disable_int(info, NDCR_INT_MASK);
-
- /*
- * Directly set the chip select to a invalid value,
- * then the driver would reset the timing according
- * to current chip select at the beginning of cmdfunc
- */
- info->cs = 0xff;
-
- /*
- * As the spec says, the NDSR would be updated to 0x1800 when
- * doing the nand_clk disable/enable.
- * To prevent it damaging state machine of the driver, clear
- * all status before resume
- */
- nand_writel(info, NDSR, NDSR_MASK);
-
- return 0;
-}
-#else
-#define pxa3xx_nand_suspend NULL
-#define pxa3xx_nand_resume NULL
-#endif
-
-static const struct dev_pm_ops pxa3xx_nand_pm_ops = {
- .suspend = pxa3xx_nand_suspend,
- .resume = pxa3xx_nand_resume,
-};
-
-static struct platform_driver pxa3xx_nand_driver = {
- .driver = {
- .name = "pxa3xx-nand",
- .of_match_table = pxa3xx_nand_dt_ids,
- .pm = &pxa3xx_nand_pm_ops,
- },
- .probe = pxa3xx_nand_probe,
- .remove = pxa3xx_nand_remove,
-};
-
-module_platform_driver(pxa3xx_nand_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("PXA3xx NAND controller driver");
--
2.11.0
--
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* [PATCH 02/12] mtd: nand: add reworked Marvell NAND controller driver
From: Miquel Raynal @ 2017-12-07 20:18 UTC (permalink / raw)
To: David Woodhouse, Brian Norris, Boris Brezillon, Marek Vasut,
Richard Weinberger, Cyrille Pitchen, Rob Herring, Mark Rutland,
Jason Cooper, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth,
Russell King, Daniel Mack, Haojian Zhuang, Robert Jarzmik,
Eric Miao, Catalin Marinas
Cc: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Thomas Petazzoni, Antoine Tenart, Nadav Haklai, Miquel Raynal,
Ofer Heifetz, Hanna Hawa, Neta Zur Hershkovits
In-Reply-To: <20171207201814.30411-1-miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Add marvell_nand driver which aims at replacing the existing pxa3xx_nand
driver.
The new driver intends to be easier to understand and follows the brand
new NAND framework rules by implementing hooks for every pattern the
controller might support and referencing them inside a parser object
that will be given to the core at each ->exec_op() call.
Raw accessors are implemented, useful to test/debug memory/filesystem
corruptions. Userspace binaries contained in the mtd-utils package may
now be used and their output trusted.
Timings may not be kept from the bootloader anymore, the timings used
for instance in U-Boot were not optimal and it supposed to have NAND
support (and initialized) in the bootloader.
Thanks to the improved timings, implementation of ONFI mode 5 support
(with EDO managed by adding a delay on data sampling), merging the
commands together and optimizing writes in the command registers, the
new driver may achieve faster throughputs in both directions.
Measurements show an improvement of about +23% read throughput and +24%
write throughput. These measurements have been done with an
Armada-385-DB-AP (4kiB NAND pages forced in 4-bit strength BCH ECC
correction) using the userspace tool 'flash_speed' from the MTD test
suite.
Besides these important topics, the new driver addresses several
unsolved known issues in the old driver which:
- did not work with ECC soft neither with ECC none ;
- relied on naked read/write (which is unchanged) while the NFCv1
embedded in the pxa3xx platforms do not implement it, so several
NAND commands did not actually ever work without any notice (like
reading the ONFI PARAM_PAGE or SET/GET_FEATURES) ;
- wrote the OOB data correctly, but was not able to read it correctly
past the first OOB data chunk ;
- did not displayed ECC bytes ;
- used device tree bindings that did not allow more than one NAND chip,
and did not allow to choose the correct chip select if not
incrementing from 0. Plus, the Ready/Busy line used had to be 0.
Old device tree bindings are still supported but deprecated. A more
hierarchical view has to be used to keep the controller and the NAND
chip structures clearly separated both inside the device tree and also
in the driver code.
Signed-off-by: Miquel Raynal <miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
---
drivers/mtd/nand/Kconfig | 12 +
drivers/mtd/nand/Makefile | 1 +
drivers/mtd/nand/marvell_nand.c | 2951 +++++++++++++++++++++++++++++++++++++++
3 files changed, 2964 insertions(+)
create mode 100644 drivers/mtd/nand/marvell_nand.c
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 859eb7790c46..9e141e03f5c2 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -323,6 +323,18 @@ config MTD_NAND_PXA3xx
platforms (XP, 370, 375, 38x, 39x) and 64-bit Armada
platforms (7K, 8K) (NFCv2).
+config MTD_NAND_MARVELL
+ tristate "NAND controller support on Marvell boards"
+ depends on PXA3xx || ARCH_MMP || PLAT_ORION || ARCH_MVEBU || \
+ COMPILE_TEST
+ depends on HAS_IOMEM
+ help
+ This enables the NAND flash controller driver for Marvell boards,
+ including:
+ - PXA3xx processors (NFCv1)
+ - 32-bit Armada platforms (XP, 37x, 38x, 39x) (NFCv2)
+ - 64-bit Aramda platforms (7k, 8k) (NFCv2)
+
config MTD_NAND_SLC_LPC32XX
tristate "NXP LPC32xx SLC Controller"
depends on ARCH_LPC32XX
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 118a1349aad3..921634ba400c 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_MTD_NAND_OMAP2) += omap2_nand.o
obj-$(CONFIG_MTD_NAND_OMAP_BCH_BUILD) += omap_elm.o
obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o
obj-$(CONFIG_MTD_NAND_PXA3xx) += pxa3xx_nand.o
+obj-$(CONFIG_MTD_NAND_MARVELL) += marvell_nand.o
obj-$(CONFIG_MTD_NAND_TMIO) += tmio_nand.o
obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o
obj-$(CONFIG_MTD_NAND_PASEMI) += pasemi_nand.o
diff --git a/drivers/mtd/nand/marvell_nand.c b/drivers/mtd/nand/marvell_nand.c
new file mode 100644
index 000000000000..2525d9b2f4fa
--- /dev/null
+++ b/drivers/mtd/nand/marvell_nand.c
@@ -0,0 +1,2951 @@
+/*
+ * Marvell NAND flash controller driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Copyright (C) 2017 Marvell
+ * Author: Miquel RAYNAL <miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
+ */
+
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <linux/mtd/rawnand.h>
+#include <linux/of_platform.h>
+#include <linux/iopoll.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+#include <asm/unaligned.h>
+
+#include <linux/dmaengine.h>
+#include <linux/dma-mapping.h>
+#include <linux/dma/pxa-dma.h>
+#include <linux/platform_data/mtd-nand-pxa3xx.h>
+
+/* Data FIFO granularity, FIFO reads/writes must be a multiple of this length */
+#define FIFO_DEPTH 8
+#define FIFO_REP(x) (x / sizeof(u32))
+#define BCH_SEQ_READS (32 / FIFO_DEPTH)
+/* NFC does not support transfers of larger chunks at a time */
+#define MAX_CHUNK_SIZE 2112
+/* NFCv1 cannot read more that 7 bytes of ID */
+#define NFCV1_READID_LEN 7
+/* Polling is done at a pace of POLL_PERIOD us until POLL_TIMEOUT is reached */
+#define POLL_PERIOD 0
+#define POLL_TIMEOUT 100000
+/* Interrupt maximum wait period in ms */
+#define IRQ_TIMEOUT 1000
+/* Latency in clock cycles between SoC pins and NFC logic */
+#define MIN_RD_DEL_CNT 3
+/* Maximum number of contiguous address cycles */
+#define MAX_ADDRESS_CYC_NFCV1 5
+#define MAX_ADDRESS_CYC_NFCV2 7
+/* System control registers/bits to enable the NAND controller on some SoCs */
+#define GENCONF_SOC_DEVICE_MUX 0x208
+#define GENCONF_SOC_DEVICE_MUX_NFC_EN BIT(0)
+#define GENCONF_SOC_DEVICE_MUX_ECC_CLK_RST BIT(20)
+#define GENCONF_SOC_DEVICE_MUX_ECC_CORE_RST BIT(21)
+#define GENCONF_SOC_DEVICE_MUX_NFC_INT_EN BIT(25)
+#define GENCONF_CLK_GATING_CTRL 0x220
+#define GENCONF_CLK_GATING_CTRL_ND_GATE BIT(2)
+#define GENCONF_ND_CLK_CTRL 0x700
+#define GENCONF_ND_CLK_CTRL_EN BIT(0)
+
+/* NAND controller data flash control register */
+#define NDCR 0x00
+/* NAND interface timing parameter 0 register */
+#define NDTR0 0x04
+/* NAND interface timing parameter 1 register */
+#define NDTR1 0x0C
+/* NAND controller status register */
+#define NDSR 0x14
+/* NAND ECC control register */
+#define NDECCCTRL 0x28
+/* NAND controller data buffer register */
+#define NDDB 0x40
+/* NAND controller command buffer 0 register */
+#define NDCB0 0x48
+/* NAND controller command buffer 1 register */
+#define NDCB1 0x4C
+/* NAND controller command buffer 2 register */
+#define NDCB2 0x50
+/* NAND controller command buffer 3 register */
+#define NDCB3 0x54
+
+/* Data flash control register bitfields */
+#define NDCR_ALL_INT GENMASK(11, 0)
+#define NDCR_CS1_CMDDM BIT(7)
+#define NDCR_CS0_CMDDM BIT(8)
+#define NDCR_RDYM BIT(11)
+#define NDCR_ND_ARB_EN BIT(12)
+#define NDCR_RA_START BIT(15)
+#define NDCR_RD_ID_CNT(x) (min_t(unsigned int, x, 0x7) << 16)
+#define NDCR_PAGE_SZ(x) (x >= 2048 ? BIT(24) : 0)
+#define NDCR_DWIDTH_M BIT(26)
+#define NDCR_DWIDTH_C BIT(27)
+#define NDCR_ND_RUN BIT(28)
+#define NDCR_DMA_EN BIT(29)
+#define NDCR_ECC_EN BIT(30)
+#define NDCR_SPARE_EN BIT(31)
+
+/* NAND interface timing parameter registers bitfields */
+#define NDTR0_TRP(x) ((min_t(unsigned int, x, 0xF) & 0x7) << 0)
+#define NDTR0_TRH(x) (min_t(unsigned int, x, 0x7) << 3)
+#define NDTR0_ETRP(x) ((min_t(unsigned int, x, 0xF) & 0x8) << 3)
+#define NDTR0_SEL_NRE_EDGE BIT(7)
+#define NDTR0_TWP(x) (min_t(unsigned int, x, 0x7) << 8)
+#define NDTR0_TWH(x) (min_t(unsigned int, x, 0x7) << 11)
+#define NDTR0_TCS(x) (min_t(unsigned int, x, 0x7) << 16)
+#define NDTR0_TCH(x) (min_t(unsigned int, x, 0x7) << 19)
+#define NDTR0_RD_CNT_DEL(x) (min_t(unsigned int, x, 0xF) << 22)
+#define NDTR0_SELCNTR BIT(26)
+#define NDTR0_TADL(x) (min_t(unsigned int, x, 0x1F) << 27)
+
+#define NDTR1_TAR(x) (min_t(unsigned int, x, 0xF) << 0)
+#define NDTR1_TWHR(x) (min_t(unsigned int, x, 0xF) << 4)
+#define NDTR1_TRHW(x) (min_t(unsigned int, x / 16, 0x3) << 8)
+#define NDTR1_PRESCALE BIT(14)
+#define NDTR1_WAIT_MODE BIT(15)
+#define NDTR1_TR(x) (min_t(unsigned int, x, 0xFFFF) << 16)
+
+/* NAND controller status register bitfields */
+#define NDSR_WRCMDREQ BIT(0)
+#define NDSR_RDDREQ BIT(1)
+#define NDSR_WRDREQ BIT(2)
+#define NDSR_CORERR BIT(3)
+#define NDSR_UNCERR BIT(4)
+#define NDSR_CMDD(cs) BIT(8 - cs)
+#define NDSR_RDY(rb) BIT(11 + rb)
+#define NDSR_ERRCNT(x) ((x >> 16) & 0x1F)
+
+/* NAND ECC control register bitfields */
+#define NDECCTRL_BCH_EN BIT(0)
+
+/* NAND controller command buffer registers bitfields */
+#define NDCB0_CMD1(x) ((x & 0xFF) << 0)
+#define NDCB0_CMD2(x) ((x & 0xFF) << 8)
+#define NDCB0_ADDR_CYC(x) ((x & 0x7) << 16)
+#define NDCB0_DBC BIT(19)
+#define NDCB0_CMD_TYPE(x) ((x & 0x7) << 21)
+#define NDCB0_CSEL BIT(24)
+#define NDCB0_RDY_BYP BIT(27)
+#define NDCB0_LEN_OVRD BIT(28)
+#define NDCB0_CMD_XTYPE(x) ((x & 0x7) << 29)
+
+#define NDCB1_COLS(x) ((x & 0xFFFF) << 0)
+#define NDCB1_ADDRS(x) (x << 16)
+
+#define NDCB2_ADDR5(x) (((x >> 16) & 0xFF) << 0)
+
+#define NDCB3_ADDR6(x) ((x & 0xFF) << 16)
+#define NDCB3_ADDR7(x) ((x & 0xFF) << 24)
+
+/* NAND controller command buffer 0 register 'type' and 'xtype' fields */
+#define TYPE_READ 0
+#define TYPE_WRITE 1
+#define TYPE_ERASE 2
+#define TYPE_READ_ID 3
+#define TYPE_STATUS 4
+#define TYPE_RESET 5
+#define TYPE_NAKED_CMD 6
+#define TYPE_NAKED_ADDR 7
+#define TYPE_MASK 7
+#define XTYPE_MONOLITHIC_RW 0
+#define XTYPE_LAST_NAKED_RW 1
+#define XTYPE_FINAL_COMMAND 3
+#define XTYPE_READ 4
+#define XTYPE_WRITE_DISPATCH 4
+#define XTYPE_NAKED_RW 5
+#define XTYPE_COMMAND_DISPATCH 6
+#define XTYPE_MASK 7
+
+/*
+ * Marvell ECC engine works differently than the others, in order to limit the
+ * size of the IP, hardware engineers choose to set a fixed strength at 16 bits
+ * per subpage, and depending on a the desired strength needed by the NAND chip,
+ * a particular layout mixing data/spare/ecc is defined, with a possible last
+ * chunk smaller that the others.
+ *
+ * @writesize: Full page size on which the layout applies
+ * @chunk: Desired ECC chunk size on which the layout applies
+ * @strength: Desired ECC strength (per chunk size bytes) on which the
+ * layout applies
+ * @full_chunk_cnt: Number of full-sized chunks, which is the number of
+ * repetitions of the pattern:
+ * (data_bytes + spare_bytes + ecc_bytes).
+ * @data_bytes: Number of data bytes per chunk
+ * @spare_bytes: Number of spare bytes per chunk
+ * @ecc_bytes: Number of ecc bytes per chunk
+ * @last_chunk_cnt: If there is a last chunk with a different size than
+ * the first ones, the next fields may not be empty
+ * @last_data_bytes: Number of data bytes in the last chunk
+ * @last_spare_bytes: Number of spare bytes in the last chunk
+ * @last_ecc_bytes: Number of ecc bytes in the last chunk
+ */
+struct marvell_hw_ecc_layout {
+ /* Constraints */
+ int writesize;
+ int chunk;
+ int strength;
+ /* Corresponding layout */
+ int full_chunk_cnt;
+ int data_bytes;
+ int spare_bytes;
+ int ecc_bytes;
+ int last_chunk_cnt;
+ int last_data_bytes;
+ int last_spare_bytes;
+ int last_ecc_bytes;
+};
+
+#define MARVELL_LAYOUT(ws, dc, ds, fcc, db, sb, eb, lcc, ldb, lsb, leb) \
+ { \
+ .writesize = ws, \
+ .chunk = dc, \
+ .strength = ds, \
+ .full_chunk_cnt = fcc, \
+ .data_bytes = db, \
+ .spare_bytes = sb, \
+ .ecc_bytes = eb, \
+ .last_chunk_cnt = lcc, \
+ .last_data_bytes = ldb, \
+ .last_spare_bytes = lsb, \
+ .last_ecc_bytes = leb, \
+ }
+
+/* Layouts explained in AN-379_Marvell_SoC_NFC_ECC */
+static const struct marvell_hw_ecc_layout marvell_nfc_layouts[] = {
+ MARVELL_LAYOUT( 512, 512, 1, 1, 512, 8, 8, 0, 0, 0, 0),
+ MARVELL_LAYOUT( 2048, 512, 1, 1, 2048, 40, 24, 0, 0, 0, 0),
+ MARVELL_LAYOUT( 2048, 512, 4, 1, 2048, 32, 30, 0, 0, 0, 0),
+ MARVELL_LAYOUT( 4096, 512, 4, 2, 2048, 32, 30, 0, 0, 0, 0),
+ MARVELL_LAYOUT( 4096, 512, 8, 4, 1024, 0, 30, 1, 0, 64, 30),
+};
+
+/*
+ * The Nand Flash Controller has up to 4 CE and 2 RB pins. The CE selection
+ * is made by a field in NDCB0 register, and in another field in NDCB2 register.
+ * The datasheet describes the logic with an error: ADDR5 field is once
+ * declared at the beginning of NDCB2, and another time at its end. Because the
+ * ADDR5 field of NDCB2 may be used by other bytes, it would be more logical
+ * to use the last bit of this field instead of the first ones.
+ *
+ * @cs: Wanted CE lane.
+ * @ndcb0_csel: Value of the NDCB0 register with or without the flag
+ * selecting the wanted CE lane. This is set once when
+ * the Device Tree is probed.
+ * @rb: Ready/Busy pin for the flash chip
+ */
+struct marvell_nand_chip_sel {
+ unsigned int cs;
+ u32 ndcb0_csel;
+ unsigned int rb;
+};
+
+/*
+ * NAND chip structure: stores NAND chip device related information
+ *
+ * @chip: Base NAND chip structure
+ * @node: Used to store NAND chips into a list
+ * @layout NAND layout when using hardware ECC
+ * @ndtr0 Timing registers 0 value for this NAND chip
+ * @ndtr1 Timing registers 1 value for this NAND chip
+ * @selected_die: Current active CS
+ * @nsels: Number of CS lines required by the NAND chip
+ * @sels: Array of CS lines descriptions
+ */
+struct marvell_nand_chip {
+ struct nand_chip chip;
+ struct list_head node;
+ const struct marvell_hw_ecc_layout *layout;
+ u32 ndtr0;
+ u32 ndtr1;
+ int addr_cyc;
+ int selected_die;
+ unsigned int nsels;
+ struct marvell_nand_chip_sel sels[0];
+};
+
+static inline struct marvell_nand_chip *to_marvell_nand(struct nand_chip *chip)
+{
+ return container_of(chip, struct marvell_nand_chip, chip);
+}
+
+static inline struct marvell_nand_chip_sel *to_nand_sel(struct marvell_nand_chip
+ *nand)
+{
+ return &nand->sels[nand->selected_die];
+}
+
+/*
+ * NAND controller capabilities for distinction between compatible strings
+ *
+ * @max_cs_nb: Number of Chip Select lines available
+ * @max_rb_nb: Number of Ready/Busy lines available
+ * @need_system_controller: Indicates if the SoC needs to have access to the
+ * system controller (ie. to enable the NAND controller)
+ * @legacy_of_bindings: Indicates if DT parsing must be done using the old
+ * fashion way
+ * @is_nfcv2: NFCv2 has numerous enhancements compared to NFCv1, ie.
+ * BCH error detection and correction algorithm,
+ * NDCB3 register has been added
+ * @use_dma: Use dma for data transfers
+ */
+struct marvell_nfc_caps {
+ unsigned int max_cs_nb;
+ unsigned int max_rb_nb;
+ bool need_system_controller;
+ bool legacy_of_bindings;
+ bool is_nfcv2;
+ bool use_dma;
+};
+
+/*
+ * NAND controller structure: stores Marvell NAND controller information
+ *
+ * @controller: Base controller structure
+ * @dev: Parent device (used to print error messages)
+ * @regs: NAND controller registers
+ * @ecc_clk: ECC block clock, two times the NAND controller clock
+ * @complete: Completion object to wait for NAND controller events
+ * @assigned_cs: Bitmask describing already assigned CS lines
+ * @chips: List containing all the NAND chips attached to
+ * this NAND controller
+ * @caps: NAND controller capabilities for each compatible string
+ * @buf: Controller local buffer to store a part of the read
+ * buffer when the read operation was not 8 bytes aligned
+ * as is the FIFO.
+ * @buf_pos: Position in the 'buf' buffer
+ * @dma_chan: DMA channel (NFCv1 only)
+ * @dma_buf: 32-bit aligned buffer for DMA transfers (NFCv1 only)
+ */
+struct marvell_nfc {
+ struct nand_hw_control controller;
+ struct device *dev;
+ void __iomem *regs;
+ struct clk *ecc_clk;
+ struct completion complete;
+ unsigned long assigned_cs;
+ struct list_head chips;
+ struct nand_chip *selected_chip;
+ const struct marvell_nfc_caps *caps;
+
+ /*
+ * Buffer handling: @buf will be accessed byte-per-byter but also
+ * int-per-int when exchanging data with the NAND controller FIFO,
+ * 32-bit alignment is then required.
+ */
+ u8 buf[FIFO_DEPTH] __aligned(sizeof(u32));
+ int buf_pos;
+
+ /* DMA (NFCv1 only) */
+ bool use_dma;
+ struct dma_chan *dma_chan;
+ u8 *dma_buf;
+};
+
+static inline struct marvell_nfc *to_marvell_nfc(struct nand_hw_control *ctrl)
+{
+ return container_of(ctrl, struct marvell_nfc, controller);
+}
+
+/*
+ * NAND controller timings expressed in NAND Controller clock cycles
+ *
+ * @tRP: ND_nRE pulse width
+ * @tRH: ND_nRE high duration
+ * @tWP: ND_nWE pulse time
+ * @tWH: ND_nWE high duration
+ * @tCS: Enable signal setup time
+ * @tCH: Enable signal hold time
+ * @tADL: Address to write data delay
+ * @tAR: ND_ALE low to ND_nRE low delay
+ * @tWHR: ND_nWE high to ND_nRE low for status read
+ * @tRHW: ND_nRE high duration, read to write delay
+ * @tR: ND_nWE high to ND_nRE low for read
+ */
+struct marvell_nfc_timings {
+ /* NDTR0 fields */
+ unsigned int tRP;
+ unsigned int tRH;
+ unsigned int tWP;
+ unsigned int tWH;
+ unsigned int tCS;
+ unsigned int tCH;
+ unsigned int tADL;
+ /* NDTR1 fields */
+ unsigned int tAR;
+ unsigned int tWHR;
+ unsigned int tRHW;
+ unsigned int tR;
+};
+
+/*
+ * Derives a duration in numbers of clock cycles.
+ *
+ * @ps: Duration in pico-seconds
+ * @period_ns: Clock period in nano-seconds
+ *
+ * Convert the duration in nano-seconds, then divide by the period and
+ * return the number of clock periods.
+ */
+#define TO_CYCLES(ps, period_ns) (DIV_ROUND_UP(ps / 1000, period_ns))
+
+/*
+ * NAND driver structure filled during the parsing of the ->exec_op() subop
+ * subset of instructions.
+ *
+ * @ndcb: Array for the values of the NDCBx registers
+ * @cle_ale_delay_ns: Optional delay after the last CMD or ADDR cycle
+ * @rdy_timeout_ms: Timeout for waits on Ready/Busy pin
+ * @rdy_delay_ns: Optional delay after waiting for the RB pin
+ * @data_delay_ns: Optional delay after the data xfer
+ * @data_instr_idx: Index of the data instruction in the subop
+ * @data_instr: Pointer to the data instruction in the subop
+ */
+struct marvell_nfc_op {
+ u32 ndcb[4];
+ unsigned int cle_ale_delay_ns;
+ unsigned int rdy_timeout_ms;
+ unsigned int rdy_delay_ns;
+ unsigned int data_delay_ns;
+ unsigned int data_instr_idx;
+ const struct nand_op_instr *data_instr;
+};
+
+/*
+ * Internal helper to conditionnally apply a delay (from the above structure,
+ * most of the time).
+ */
+static void cond_delay(unsigned int ns)
+{
+ if (!ns)
+ return;
+
+ if (ns < 10000)
+ ndelay(ns);
+ else
+ udelay(DIV_ROUND_UP(ns, 1000));
+}
+
+/*
+ * Internal helper to mimic core functions whithout having to distinguish if
+ * this is the first read operation on the page or not and hence choose the
+ * right function.
+ */
+int read_page_data(struct nand_chip *chip, unsigned int page,
+ unsigned int column, void *buf, unsigned int len)
+{
+ if (!column)
+ return nand_read_page_op(chip, page, column, buf, len);
+ else
+ return nand_change_read_column_op(chip, column, buf, len,
+ false);
+}
+
+/*
+ * The controller has many flags that could generate interrupts, most of them
+ * are disabled and polling is used. For the very slow signals, using interrupts
+ * may relax the CPU charge.
+ */
+static void marvell_nfc_disable_int(struct marvell_nfc *nfc, u32 int_mask)
+{
+ u32 reg;
+
+ /* Writing 1 disables the interrupt */
+ reg = readl_relaxed(nfc->regs + NDCR);
+ writel_relaxed(reg | int_mask, nfc->regs + NDCR);
+}
+
+static void marvell_nfc_enable_int(struct marvell_nfc *nfc, u32 int_mask)
+{
+ u32 reg;
+
+ /* Writing 0 enables the interrupt */
+ reg = readl_relaxed(nfc->regs + NDCR);
+ writel_relaxed(reg & ~int_mask, nfc->regs + NDCR);
+}
+
+static void marvell_nfc_clear_int(struct marvell_nfc *nfc, u32 int_mask)
+{
+ writel_relaxed(int_mask, nfc->regs + NDSR);
+}
+
+/*
+ * The core may ask the controller to use only 8-bit accesses while usually
+ * using 16-bit accesses. Later function may blindly call this one with a
+ * boolean to indicate if 8-bit accesses must be enabled of disabled without
+ * knowing if 16-bit accesses are actually in use.
+ */
+static void marvell_nfc_force_byte_access(struct nand_chip *chip,
+ bool force_8bit)
+{
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ u32 ndcr;
+
+ if (!(chip->options & NAND_BUSWIDTH_16))
+ return;
+
+ ndcr = readl_relaxed(nfc->regs + NDCR);
+
+ if (force_8bit)
+ ndcr &= ~(NDCR_DWIDTH_M | NDCR_DWIDTH_C);
+ else
+ ndcr |= NDCR_DWIDTH_M | NDCR_DWIDTH_C;
+
+ writel_relaxed(ndcr, nfc->regs + NDCR);
+}
+
+static int marvell_nfc_wait_ndrun(struct nand_chip *chip)
+{
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ u32 val;
+ int ret;
+
+ /*
+ * The command is being processed, wait for the ND_RUN bit to be
+ * cleared by the NFC. If not, we must clear it by hand.
+ */
+ ret = readl_relaxed_poll_timeout(nfc->regs + NDCR, val,
+ (val & NDCR_ND_RUN) == 0,
+ POLL_PERIOD, POLL_TIMEOUT);
+ if (ret) {
+ dev_err(nfc->dev, "Timeout on NAND controller run mode\n");
+ writel_relaxed(readl_relaxed(nfc->regs + NDCR) & ~NDCR_ND_RUN,
+ nfc->regs + NDCR);
+ return ret;
+ }
+
+ return 0;
+}
+
+/*
+ * Any time a command has to be sent to the controller, the following sequence
+ * has to be followed:
+ * - call marvell_nfc_prepare_cmd()
+ * -> activate the ND_RUN bit that will kind of 'start a job'
+ * -> wait the signal indicating the NFC is waiting for a command
+ * - send the command (cmd and address cycles)
+ * - enventually send or receive the data
+ * - call marvell_nfc_end_cmd() with the corresponding flag
+ * -> wait the flag to be triggered or cancel the job with a timeout
+ *
+ * The following functions are helpers to do this job and keep in the
+ * specialized functions the code that really does the operations.
+ */
+static int marvell_nfc_prepare_cmd(struct nand_chip *chip)
+{
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ u32 ndcr, val;
+ int ret;
+
+ /* Poll ND_RUN and clear NDSR before issuing any command */
+ ret = marvell_nfc_wait_ndrun(chip);
+ if (ret) {
+ dev_err(nfc->dev, "Last operation did not suceed\n");
+ return ret;
+ }
+
+ ndcr = readl_relaxed(nfc->regs + NDCR);
+ writel_relaxed(readl_relaxed(nfc->regs + NDSR), nfc->regs + NDSR);
+
+ /* Assert ND_RUN bit and wait the NFC to be ready */
+ writel_relaxed(ndcr | NDCR_ND_RUN, nfc->regs + NDCR);
+ ret = readl_relaxed_poll_timeout(nfc->regs + NDSR, val,
+ val & NDSR_WRCMDREQ,
+ POLL_PERIOD, POLL_TIMEOUT);
+ if (ret) {
+ dev_err(nfc->dev, "Timeout on WRCMDRE\n");
+ return -ETIMEDOUT;
+ }
+
+ /* Command may be written, clear WRCMDREQ status bit */
+ writel_relaxed(NDSR_WRCMDREQ, nfc->regs + NDSR);
+
+ return 0;
+}
+
+static void marvell_nfc_send_cmd(struct nand_chip *chip,
+ struct marvell_nfc_op *nfc_op)
+{
+ struct marvell_nand_chip *marvell_nand = to_marvell_nand(chip);
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+
+ dev_dbg(nfc->dev,
+ "NDCB0: 0x%08x\nNDCB1: 0x%08x\nNDCB2: 0x%08x\nNDCB3: 0x%08x\n",
+ nfc_op->ndcb[0], nfc_op->ndcb[1], nfc_op->ndcb[2],
+ nfc_op->ndcb[3]);
+
+ writel_relaxed(to_nand_sel(marvell_nand)->ndcb0_csel | nfc_op->ndcb[0],
+ nfc->regs + NDCB0);
+ writel_relaxed(nfc_op->ndcb[1], nfc->regs + NDCB0);
+ writel(nfc_op->ndcb[2], nfc->regs + NDCB0);
+
+ /*
+ * Write NDCB0 four times only if LEN_OVRD is set or if ADDR6 or ADDR7
+ * fields are used (only available on NFCv2).
+ */
+ if (nfc_op->ndcb[0] & NDCB0_LEN_OVRD ||
+ (nfc_op->ndcb[0] & NDCB0_ADDR_CYC(6)) == NDCB0_ADDR_CYC(6)) {
+ if (nfc->caps->is_nfcv2)
+ writel(nfc_op->ndcb[3], nfc->regs + NDCB0);
+ else
+ dev_err(nfc->dev,
+ "NDCB3 does not exist on NFCv1 and should not be written\n");
+ }
+}
+
+static int marvell_nfc_end_cmd(struct nand_chip *chip, int flag,
+ const char *label)
+{
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ u32 val;
+ int ret;
+
+ ret = readl_relaxed_poll_timeout(nfc->regs + NDSR, val,
+ val & flag,
+ POLL_PERIOD, POLL_TIMEOUT);
+
+ if (ret) {
+ dev_err(nfc->dev, "Timeout on %s (NDSR: 0x%08x)\n",
+ label, val);
+ if (nfc->dma_chan)
+ dmaengine_terminate_all(nfc->dma_chan);
+ return ret;
+ }
+
+ /*
+ * DMA function uses this helper to poll on CMDD bits without wanting
+ * them to be bleared.
+ */
+ if (nfc->use_dma && (readl(nfc->regs + NDCR) & NDCR_DMA_EN))
+ return 0;
+
+ writel_relaxed(flag, nfc->regs + NDSR);
+
+ return 0;
+}
+
+static int marvell_nfc_wait_cmdd(struct nand_chip *chip)
+{
+ struct marvell_nand_chip *marvell_nand = to_marvell_nand(chip);
+ int cs_flag = NDSR_CMDD(to_nand_sel(marvell_nand)->ndcb0_csel);
+
+ return marvell_nfc_end_cmd(chip, cs_flag, "CMDD");
+}
+
+static int marvell_nfc_wait_op(struct nand_chip *chip, unsigned int timeout_ms)
+{
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ int ret;
+
+ /* Timeout is expressed in ms */
+ if (!timeout_ms)
+ timeout_ms = IRQ_TIMEOUT;
+
+ init_completion(&nfc->complete);
+
+ marvell_nfc_enable_int(nfc, NDCR_RDYM);
+ ret = wait_for_completion_timeout(&nfc->complete,
+ msecs_to_jiffies(timeout_ms));
+ marvell_nfc_disable_int(nfc, NDCR_RDYM);
+ marvell_nfc_clear_int(nfc, NDSR_RDY(0) | NDSR_RDY(1));
+ if (!ret) {
+ dev_err(nfc->dev, "Timeout waiting for RB signal\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+static void marvell_nfc_select_chip(struct mtd_info *mtd, int die_nr)
+{
+ struct nand_chip *chip = mtd_to_nand(mtd);
+ struct marvell_nand_chip *marvell_nand = to_marvell_nand(chip);
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ u32 ndcr;
+
+ if (chip == nfc->selected_chip && die_nr == marvell_nand->selected_die)
+ return;
+
+ if (die_nr < 0 || die_nr >= marvell_nand->nsels) {
+ nfc->selected_chip = NULL;
+ marvell_nand->selected_die = -1;
+ return;
+ }
+
+ /*
+ * Do not change the timing registers when using the DT property
+ * marvell,nand-keep-config; in that case ->ndtr0 and ->ndtr1 from the
+ * marvell_nand structure are supposedly empty.
+ */
+ if (marvell_nand->ndtr0 && marvell_nand->ndtr1) {
+ writel_relaxed(marvell_nand->ndtr0, nfc->regs + NDTR0);
+ writel_relaxed(marvell_nand->ndtr1, nfc->regs + NDTR1);
+ }
+
+ ndcr = readl_relaxed(nfc->regs + NDCR);
+
+ /* Ensure controller is not blocked; also clear some fields */
+ ndcr &= ~(NDCR_ND_RUN | NDCR_DWIDTH_M | NDCR_DWIDTH_C |
+ NDCR_PAGE_SZ(2048));
+
+ /* Adapt bus width */
+ if (chip->options & NAND_BUSWIDTH_16)
+ ndcr |= NDCR_DWIDTH_M | NDCR_DWIDTH_C;
+
+ /* Page size as seen by the controller, either 512B or 2kiB */
+ ndcr |= NDCR_PAGE_SZ(mtd->writesize);
+
+ /* Update the control register */
+ writel_relaxed(ndcr, nfc->regs + NDCR);
+
+ /* Also reset the interrupt status register */
+ marvell_nfc_clear_int(nfc, NDCR_ALL_INT);
+
+ nfc->selected_chip = chip;
+ marvell_nand->selected_die = die_nr;
+}
+
+static irqreturn_t marvell_nfc_isr(int irq, void *dev_id)
+{
+ struct marvell_nfc *nfc = dev_id;
+ u32 st = readl_relaxed(nfc->regs + NDSR);
+ u32 ien = (~readl_relaxed(nfc->regs + NDCR)) & NDCR_ALL_INT;
+
+ /*
+ * RDY interrupt mask is one bit in NDCR while there are two status
+ * bit in NDSR (RDY[cs0/cs2] and RDY[cs1/cs3]).
+ */
+ if (st & NDSR_RDY(1))
+ st |= NDSR_RDY(0);
+
+ if (!(st & ien))
+ return IRQ_NONE;
+
+ marvell_nfc_disable_int(nfc, st & NDCR_ALL_INT);
+
+ if (!(st & (NDSR_RDDREQ | NDSR_WRDREQ | NDSR_WRCMDREQ)))
+ complete(&nfc->complete);
+
+ return IRQ_HANDLED;
+}
+
+/* HW ECC related functions */
+static void marvell_nfc_enable_hw_ecc(struct nand_chip *chip)
+{
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ u32 ndcr = readl_relaxed(nfc->regs + NDCR);
+
+ if (!(ndcr & NDCR_ECC_EN)) {
+ writel(ndcr | NDCR_ECC_EN, nfc->regs + NDCR);
+
+ /*
+ * When enabling BCH, set threshold to 0 to always know the
+ * number of corrected bitflips.
+ */
+ if (chip->ecc.algo == NAND_ECC_BCH)
+ writel(NDECCTRL_BCH_EN, nfc->regs + NDECCCTRL);
+ }
+}
+
+static void marvell_nfc_disable_hw_ecc(struct nand_chip *chip)
+{
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ u32 ndcr = readl_relaxed(nfc->regs + NDCR);
+
+ if (ndcr & NDCR_ECC_EN) {
+ writel_relaxed(ndcr & ~NDCR_ECC_EN, nfc->regs + NDCR);
+ if (chip->ecc.algo == NAND_ECC_BCH)
+ writel_relaxed(0, nfc->regs + NDECCCTRL);
+ }
+}
+
+/*
+ * Enable/disable spare area
+ *
+ * NFCv1 needs it (see Hamming related functions). NFCv2 uses LEN_OVRD and thus
+ * does not need this bit to be set.
+ */
+static void marvell_nfc_enable_spare(struct nand_chip *chip)
+{
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ u32 ndcr = readl_relaxed(nfc->regs + NDCR);
+
+ if (!(ndcr & NDCR_SPARE_EN))
+ writel(ndcr | NDCR_SPARE_EN, nfc->regs + NDCR);
+}
+
+static void marvell_nfc_disable_spare(struct nand_chip *chip)
+{
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ u32 ndcr = readl_relaxed(nfc->regs + NDCR);
+
+ if (ndcr & NDCR_SPARE_EN)
+ writel_relaxed(ndcr & ~NDCR_SPARE_EN, nfc->regs + NDCR);
+}
+
+/* DMA related helpers */
+static void marvell_nfc_enable_dma(struct marvell_nfc *nfc)
+{
+ u32 reg;
+
+ reg = readl_relaxed(nfc->regs + NDCR);
+ writel_relaxed(reg | NDCR_DMA_EN, nfc->regs + NDCR);
+}
+
+static void marvell_nfc_disable_dma(struct marvell_nfc *nfc)
+{
+ u32 reg;
+
+ reg = readl_relaxed(nfc->regs + NDCR);
+ writel_relaxed(reg & ~NDCR_DMA_EN, nfc->regs + NDCR);
+}
+
+/* Read/write PIO/DMA accessors */
+static int marvell_nfc_xfer_data_dma(struct marvell_nfc *nfc,
+ enum dma_data_direction direction,
+ unsigned int len)
+{
+ unsigned int dma_len = min_t(int, ALIGN(len, 32), MAX_CHUNK_SIZE);
+ struct dma_async_tx_descriptor *tx;
+ struct scatterlist sg;
+ dma_cookie_t cookie;
+ int ret;
+
+ marvell_nfc_enable_dma(nfc);
+ /* Prepare the DMA transfer */
+ sg_init_one(&sg, nfc->dma_buf, dma_len);
+ dma_map_sg(nfc->dma_chan->device->dev, &sg, 1, direction);
+ tx = dmaengine_prep_slave_sg(nfc->dma_chan, &sg, 1,
+ direction == DMA_FROM_DEVICE ?
+ DMA_DEV_TO_MEM : DMA_MEM_TO_DEV,
+ DMA_PREP_INTERRUPT);
+ if (!tx) {
+ dev_err(nfc->dev, "Could not prepare DMA S/G list\n");
+ return -ENXIO;
+ }
+
+ /* Do the task and wait for it to finish */
+ cookie = dmaengine_submit(tx);
+ ret = dma_submit_error(cookie);
+ if (ret)
+ return -EIO;
+
+ dma_async_issue_pending(nfc->dma_chan);
+ ret = marvell_nfc_wait_cmdd(nfc->selected_chip);
+ dma_unmap_sg(nfc->dma_chan->device->dev, &sg, 1, direction);
+ marvell_nfc_disable_dma(nfc);
+ if (ret) {
+ dev_err(nfc->dev, "Timeout waiting for DMA (status: %d)\n",
+ dmaengine_tx_status(nfc->dma_chan, cookie, NULL));
+ dmaengine_terminate_all(nfc->dma_chan);
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+static int marvell_nfc_xfer_data_in_pio(struct marvell_nfc *nfc, u8 *in,
+ unsigned int len)
+{
+ unsigned int last_len = len % FIFO_DEPTH;
+ unsigned int last_full_offset = round_down(len, FIFO_DEPTH);
+ int i;
+
+ for (i = 0; i < last_full_offset; i += FIFO_DEPTH)
+ ioread32_rep(nfc->regs + NDDB, in + i, FIFO_REP(FIFO_DEPTH));
+
+ if (last_len) {
+ ioread32_rep(nfc->regs + NDDB, nfc->buf, FIFO_REP(FIFO_DEPTH));
+ memcpy(in + last_full_offset, nfc->buf, last_len);
+ }
+
+ return 0;
+}
+
+static int marvell_nfc_xfer_data_out_pio(struct marvell_nfc *nfc, const u8 *out,
+ unsigned int len)
+{
+ unsigned int last_len = len % FIFO_DEPTH;
+ unsigned int last_full_offset = round_down(len, FIFO_DEPTH);
+ int i;
+
+ for (i = 0; i < last_full_offset; i += FIFO_DEPTH)
+ iowrite32_rep(nfc->regs + NDDB, out + i, FIFO_REP(FIFO_DEPTH));
+
+ if (last_len) {
+ memcpy(nfc->buf, out + last_full_offset, last_len);
+ iowrite32_rep(nfc->regs + NDDB, nfc->buf, FIFO_REP(FIFO_DEPTH));
+ }
+
+ return 0;
+}
+
+static void marvell_nfc_hw_ecc_correct(struct nand_chip *chip,
+ u8 *data, int data_len,
+ u8 *oob, int oob_len,
+ unsigned int *max_bitflips)
+{
+ struct mtd_info *mtd = nand_to_mtd(chip);
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ int bf = 0;
+ u32 ndsr;
+
+ ndsr = readl_relaxed(nfc->regs + NDSR);
+
+ /* Check uncorrectable error flag */
+ if (ndsr & NDSR_UNCERR) {
+ writel_relaxed(ndsr, nfc->regs + NDSR);
+
+ /*
+ * Blank pages (all 0xFF) with no ECC are recognized as bad
+ * because hardware ECC engine expects non-empty ECC values
+ * in that case, so whenever an uncorrectable error occurs,
+ * check if the page is actually blank or not.
+ *
+ * It is important to check the emptyness only on oob_len,
+ * which only covers the spare bytes because after a read with
+ * ECC enabled, the ECC bytes in the buffer have been set by the
+ * ECC engine, so they are not 0xFF.
+ */
+ if (!data)
+ data_len = 0;
+ if (!oob)
+ oob_len = 0;
+ bf = nand_check_erased_ecc_chunk(data, data_len, NULL, 0,
+ oob, oob_len,
+ chip->ecc.strength);
+ if (bf < 0) {
+ mtd->ecc_stats.failed++;
+ return;
+ }
+ }
+
+ /* Check correctable error flag */
+ if (ndsr & NDSR_CORERR) {
+ writel_relaxed(ndsr, nfc->regs + NDSR);
+
+ if (chip->ecc.algo == NAND_ECC_BCH)
+ bf = NDSR_ERRCNT(ndsr);
+ else
+ bf = 1;
+ }
+
+ /*
+ * Derive max_bitflips either from the number of bitflips detected by
+ * the hardware ECC engine or by nand_check_erased_ecc_chunk().
+ */
+ mtd->ecc_stats.corrected += bf;
+ *max_bitflips = max_t(unsigned int, *max_bitflips, bf);
+}
+
+/* Hamming read helpers */
+static int marvell_nfc_hw_ecc_hmg_do_read_page(struct nand_chip *chip, u8 *buf,
+ bool oob_required, bool raw,
+ int page)
+{
+ struct marvell_nand_chip *marvell_nand = to_marvell_nand(chip);
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ const struct marvell_hw_ecc_layout *lt = to_marvell_nand(chip)->layout;
+ struct marvell_nfc_op nfc_op = {
+ .ndcb[0] = NDCB0_CMD_TYPE(TYPE_READ) |
+ NDCB0_ADDR_CYC(marvell_nand->addr_cyc) |
+ NDCB0_DBC |
+ NDCB0_CMD1(NAND_CMD_READ0) |
+ NDCB0_CMD2(NAND_CMD_READSTART),
+ .ndcb[1] = NDCB1_ADDRS(page),
+ .ndcb[2] = NDCB2_ADDR5(page),
+ };
+ unsigned int oob_bytes = 0;
+ int ret;
+
+ /* NFCv2 needs more information about the operation being executed */
+ if (nfc->caps->is_nfcv2)
+ nfc_op.ndcb[0] |= NDCB0_CMD_XTYPE(XTYPE_MONOLITHIC_RW);
+
+ ret = marvell_nfc_prepare_cmd(chip);
+ if (ret)
+ return ret;
+
+ if (oob_required) {
+ marvell_nfc_enable_spare(chip);
+ oob_bytes = lt->spare_bytes;
+ if (raw)
+ oob_bytes += lt->ecc_bytes;
+ }
+
+ marvell_nfc_send_cmd(chip, &nfc_op);
+ ret = marvell_nfc_end_cmd(chip, NDSR_RDDREQ,
+ "RDDREQ while draining FIFO (data/oob)");
+ if (ret)
+ return ret;
+
+ /* Read the page then the OOB area */
+ if (nfc->use_dma) {
+ marvell_nfc_xfer_data_dma(nfc, DMA_FROM_DEVICE,
+ lt->data_bytes + oob_bytes);
+ memcpy(buf, nfc->dma_buf, lt->data_bytes);
+ memcpy(chip->oob_poi + (raw ? 0 : lt->ecc_bytes),
+ nfc->dma_buf + lt->data_bytes, oob_bytes);
+ } else {
+ marvell_nfc_xfer_data_in_pio(nfc, buf, lt->data_bytes);
+ marvell_nfc_xfer_data_in_pio(nfc, chip->oob_poi, oob_bytes);
+ }
+
+ ret = marvell_nfc_wait_cmdd(chip);
+ if (ret)
+ return ret;
+
+ if (oob_required)
+ marvell_nfc_disable_spare(chip);
+
+ return 0;
+}
+
+static int marvell_nfc_hw_ecc_hmg_read_page_raw(struct mtd_info *mtd,
+ struct nand_chip *chip, u8 *buf,
+ int oob_required, int page)
+{
+ return marvell_nfc_hw_ecc_hmg_do_read_page(chip, buf, oob_required,
+ true, page);
+}
+
+static int marvell_nfc_hw_ecc_hmg_read_page(struct mtd_info *mtd,
+ struct nand_chip *chip,
+ u8 *buf, int oob_required,
+ int page)
+{
+ const struct marvell_hw_ecc_layout *lt = to_marvell_nand(chip)->layout;
+ int max_bf = 0;
+
+ /*
+ * Reading/Writing a given page must always be performed with the same
+ * configuration regarding the state of the SPARE_EN bit or ECC bytes
+ * will not be present at the same location (writing only data, without
+ * SPARE_EN will put the ECC bytes at the beginning of the OOB area,
+ * while writing with the SPARE_EN bit (hence, also writing free OOB
+ * bytes) will put first the spare bytes then, at the end of the OOB
+ * area, the ECC bytes. Choices has been made to always read/write OOB
+ * area (padding with 0xFF is handled by the core for writes).
+ */
+
+ marvell_nfc_enable_hw_ecc(chip);
+ marvell_nfc_hw_ecc_hmg_do_read_page(chip, buf, true, false, page);
+ marvell_nfc_hw_ecc_correct(chip, buf, lt->data_bytes, NULL, 0, &max_bf);
+ marvell_nfc_disable_hw_ecc(chip);
+
+ /*
+ * Re-read the OOB area in raw mode to get the ECC bytes if the OOB area
+ * is needed.
+ */
+ if (oob_required)
+ chip->ecc.read_oob_raw(mtd, chip, page);
+
+ return max_bf;
+}
+
+/*
+ * Spare area in Hamming layouts is not protected by the ECC engine (even if
+ * it appears before the ECC bytes when reading), the ->read_oob_raw() function
+ * also stands for ->read_oob().
+ */
+static int marvell_nfc_hw_ecc_hmg_read_oob_raw(struct mtd_info *mtd,
+ struct nand_chip *chip, int page)
+{
+ /* Invalidate page cache */
+ chip->pagebuf = -1;
+
+ return marvell_nfc_hw_ecc_hmg_do_read_page(chip, chip->data_buf, true,
+ true, page);
+}
+
+/* Hamming write helpers */
+static int marvell_nfc_hw_ecc_hmg_do_write_page(struct nand_chip *chip,
+ const u8 *buf,
+ bool oob_required, bool raw,
+ int page)
+{
+ struct marvell_nand_chip *marvell_nand = to_marvell_nand(chip);
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ const struct marvell_hw_ecc_layout *lt = to_marvell_nand(chip)->layout;
+ struct marvell_nfc_op nfc_op = {
+ .ndcb[0] = NDCB0_CMD_TYPE(TYPE_WRITE) |
+ NDCB0_ADDR_CYC(marvell_nand->addr_cyc) |
+ NDCB0_CMD1(NAND_CMD_SEQIN) |
+ NDCB0_CMD2(NAND_CMD_PAGEPROG) |
+ NDCB0_DBC,
+ .ndcb[1] = NDCB1_ADDRS(page),
+ .ndcb[2] = NDCB2_ADDR5(page),
+ };
+ int oob_bytes = 0;
+ int ret;
+
+ /* NFCv2 needs more information about the operation being executed */
+ if (nfc->caps->is_nfcv2)
+ nfc_op.ndcb[0] |= NDCB0_CMD_XTYPE(XTYPE_MONOLITHIC_RW);
+
+ ret = marvell_nfc_prepare_cmd(chip);
+ if (ret)
+ return ret;
+
+ if (oob_required) {
+ marvell_nfc_enable_spare(chip);
+ oob_bytes = lt->spare_bytes;
+ if (raw)
+ oob_bytes += lt->ecc_bytes;
+ }
+
+ marvell_nfc_send_cmd(chip, &nfc_op);
+ ret = marvell_nfc_end_cmd(chip, NDSR_WRDREQ,
+ "WRDREQ while loading FIFO (data)");
+ if (ret)
+ return ret;
+
+ /* Write the page then the OOB area */
+ if (nfc->use_dma) {
+ memcpy(nfc->dma_buf, buf, lt->data_bytes);
+ if (oob_required)
+ memcpy(nfc->dma_buf + lt->data_bytes, chip->oob_poi,
+ oob_bytes);
+ marvell_nfc_xfer_data_dma(nfc, DMA_TO_DEVICE, lt->data_bytes +
+ lt->ecc_bytes + lt->spare_bytes);
+ } else {
+ marvell_nfc_xfer_data_out_pio(nfc, buf, lt->data_bytes);
+ if (oob_required)
+ marvell_nfc_xfer_data_out_pio(nfc, chip->oob_poi,
+ oob_bytes);
+ }
+
+ ret = marvell_nfc_wait_cmdd(chip);
+ if (ret)
+ return ret;
+
+ ret = marvell_nfc_wait_op(chip,
+ chip->data_interface.timings.sdr.tPROG_max);
+ if (ret)
+ return ret;
+
+ if (oob_required)
+ marvell_nfc_disable_spare(chip);
+
+ return 0;
+}
+
+static int marvell_nfc_hw_ecc_hmg_write_page_raw(struct mtd_info *mtd,
+ struct nand_chip *chip,
+ const u8 *buf,
+ int oob_required, int page)
+{
+ return marvell_nfc_hw_ecc_hmg_do_write_page(chip, buf, oob_required,
+ true, page);
+}
+
+static int marvell_nfc_hw_ecc_hmg_write_page(struct mtd_info *mtd,
+ struct nand_chip *chip,
+ const u8 *buf,
+ int oob_required, int page)
+{
+ int ret;
+
+ /*
+ * Reading/Writing a given page must always be performed with the same
+ * configuration regarding the state of the SPARE_EN bit or ECC bytes
+ * will not be present at the same location (writing only data, without
+ * SPARE_EN will put the ECC bytes at the beginning of the OOB area,
+ * while writing with the SPARE_EN bit (hence, also writing free OOB
+ * bytes) will put first the spare bytes then, at the end of the OOB
+ * area, the ECC bytes. Choices has been made to always read/write OOB
+ * area (padding with 0xFF is handled by the core for writes).
+ */
+
+ marvell_nfc_enable_hw_ecc(chip);
+ ret = marvell_nfc_hw_ecc_hmg_do_write_page(chip, buf, true, false,
+ page);
+ marvell_nfc_disable_hw_ecc(chip);
+
+ return ret;
+}
+
+/*
+ * Spare area in Hamming layouts is not protected by the ECC engine (even if
+ * it appears before the ECC bytes when reading), the ->write_oob_raw() function
+ * also stands for ->write_oob().
+ */
+static int marvell_nfc_hw_ecc_hmg_write_oob_raw(struct mtd_info *mtd,
+ struct nand_chip *chip,
+ int page)
+{
+ /* Invalidate page cache */
+ chip->pagebuf = -1;
+
+ memset(chip->data_buf, 0xFF, mtd->writesize);
+
+ return marvell_nfc_hw_ecc_hmg_do_write_page(chip, chip->data_buf, true,
+ true, page);
+}
+
+/* BCH read helpers */
+static int marvell_nfc_hw_ecc_bch_read_page_raw(struct mtd_info *mtd,
+ struct nand_chip *chip, u8 *buf,
+ int oob_required, int page)
+{
+ const struct marvell_hw_ecc_layout *lt = to_marvell_nand(chip)->layout;
+ u8 *oob = chip->oob_poi;
+ int chunk_size = lt->data_bytes + lt->spare_bytes + lt->ecc_bytes;
+ int ecc_offset = (lt->full_chunk_cnt * lt->spare_bytes) +
+ (lt->last_chunk_cnt * lt->last_spare_bytes);
+ int nchunks = lt->full_chunk_cnt + lt->last_chunk_cnt;
+ int data_len = lt->data_bytes;
+ int spare_len = lt->spare_bytes;
+ int ecc_len = lt->ecc_bytes;
+ int chunk;
+
+ if (oob_required)
+ memset(chip->oob_poi, 0xFF, mtd->oobsize);
+
+ nand_read_page_op(chip, page, 0, NULL, 0);
+
+ for (chunk = 0; chunk < nchunks; chunk++) {
+ int offset_in_page = chunk * chunk_size;
+
+ /* Update last chunk length */
+ if (chunk >= lt->full_chunk_cnt) {
+ data_len = lt->last_data_bytes;
+ spare_len = lt->last_spare_bytes;
+ ecc_len = lt->last_ecc_bytes;
+ }
+
+ nand_change_read_column_op(chip, offset_in_page, buf,
+ lt->data_bytes, false);
+ buf += lt->data_bytes;
+
+ if (!oob_required)
+ continue;
+
+ offset_in_page += data_len;
+ nand_change_read_column_op(chip, offset_in_page,
+ oob + (lt->spare_bytes * chunk),
+ spare_len, false);
+
+ offset_in_page += spare_len;
+ nand_change_read_column_op(chip, offset_in_page,
+ oob + ecc_offset +
+ (ALIGN(lt->ecc_bytes, 32) * chunk),
+ ecc_len, false);
+ }
+
+ return 0;
+}
+
+static void marvell_nfc_hw_ecc_bch_read_chunk(struct nand_chip *chip, int chunk,
+ u8 *data, unsigned int data_len,
+ u8 *spare, unsigned int spare_len,
+ int page)
+{
+ struct marvell_nand_chip *marvell_nand = to_marvell_nand(chip);
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ const struct marvell_hw_ecc_layout *lt = to_marvell_nand(chip)->layout;
+ int nchunks = lt->full_chunk_cnt + lt->last_chunk_cnt;
+ int i, ret;
+ struct marvell_nfc_op nfc_op = {
+ .ndcb[0] = NDCB0_CMD_TYPE(TYPE_READ) |
+ NDCB0_ADDR_CYC(marvell_nand->addr_cyc) |
+ NDCB0_LEN_OVRD,
+ .ndcb[1] = NDCB1_ADDRS(page),
+ .ndcb[2] = NDCB2_ADDR5(page),
+ };
+
+ /*
+ * Reading spare area is mandatory when using HW ECC or read operation
+ * will trigger uncorrectable ECC errors, but do not read ECC here.
+ */
+ nfc_op.ndcb[3] = data_len + spare_len;
+
+ ret = marvell_nfc_prepare_cmd(chip);
+ if (ret)
+ return;
+
+ if (chunk == 0)
+ nfc_op.ndcb[0] |= NDCB0_DBC |
+ NDCB0_CMD1(NAND_CMD_READ0) |
+ NDCB0_CMD2(NAND_CMD_READSTART);
+
+ /*
+ * Trigger the naked read operation only on the last chunk.
+ * Otherwise, use monolithic read.
+ */
+ if (chunk < nchunks - 1)
+ nfc_op.ndcb[0] |= NDCB0_CMD_XTYPE(XTYPE_MONOLITHIC_RW);
+ else
+ nfc_op.ndcb[0] |= NDCB0_CMD_XTYPE(XTYPE_LAST_NAKED_RW);
+
+ marvell_nfc_send_cmd(chip, &nfc_op);
+
+ /*
+ * According to the datasheet, when reading from NDDB
+ * with BCH enabled, after each 32 bytes reads, we
+ * have to make sure that the NDSR.RDDREQ bit is set.
+ *
+ * Drain the FIFO, 8 32-bit reads at a time, and skip
+ * the polling on the last read.
+ *
+ * Length is a multiple of 32 bytes, hence it is a multiple of 8 too.
+ *
+ */
+
+ for (i = 0; i < data_len; i += FIFO_DEPTH * BCH_SEQ_READS) {
+ marvell_nfc_end_cmd(chip, NDSR_RDDREQ,
+ "RDDREQ while draining FIFO (data)");
+ marvell_nfc_xfer_data_in_pio(nfc, data,
+ FIFO_DEPTH * BCH_SEQ_READS);
+ data += FIFO_DEPTH * BCH_SEQ_READS;
+ }
+
+ for (i = 0; i < spare_len; i += FIFO_DEPTH * BCH_SEQ_READS) {
+ marvell_nfc_end_cmd(chip, NDSR_RDDREQ,
+ "RDDREQ while draining FIFO (OOB)");
+ marvell_nfc_xfer_data_in_pio(nfc, spare,
+ FIFO_DEPTH * BCH_SEQ_READS);
+ spare += FIFO_DEPTH * BCH_SEQ_READS;
+ }
+}
+
+static int marvell_nfc_hw_ecc_bch_read_page(struct mtd_info *mtd,
+ struct nand_chip *chip,
+ u8 *buf, int oob_required,
+ int page)
+{
+ const struct marvell_hw_ecc_layout *lt = to_marvell_nand(chip)->layout;
+ int nchunks = lt->full_chunk_cnt + lt->last_chunk_cnt;
+ int data_len = lt->data_bytes;
+ int spare_len = lt->spare_bytes;
+ u8 *data = buf;
+ u8 *spare = chip->oob_poi;
+ int max_bitflips = 0;
+ int chunk, ecc_offset_in_page, ecc_offset_in_oob_buf, ecc_len;
+
+ /*
+ * With BCH, OOB is not fully used (and thus not read entirely), not
+ * expected bytes could show up at the end of the OOB buffer if not
+ * explicitly erased.
+ */
+ if (oob_required)
+ memset(chip->oob_poi, 0xFF, mtd->oobsize);
+
+ marvell_nfc_enable_hw_ecc(chip);
+
+ for (chunk = 0; chunk < nchunks; chunk++) {
+ /* Update length for the last chunk */
+ if (chunk >= lt->full_chunk_cnt) {
+ data_len = lt->last_data_bytes;
+ spare_len = lt->last_spare_bytes;
+ }
+
+ /* Read the chunk and detect number of bitflips */
+ marvell_nfc_hw_ecc_bch_read_chunk(chip, chunk, data, data_len,
+ spare, spare_len, page);
+ marvell_nfc_hw_ecc_correct(chip, data, data_len,
+ spare, spare_len, &max_bitflips);
+
+ data += data_len;
+ spare += spare_len;
+ }
+
+ marvell_nfc_disable_hw_ecc(chip);
+
+ if (!oob_required)
+ return max_bitflips;
+
+ /*
+ * Re-read ECC bytes without ECC enabled, else it is garbage and it
+ * fails the ->correct() call.
+ */
+ ecc_len = lt->ecc_bytes;
+ ecc_offset_in_oob_buf =
+ (lt->full_chunk_cnt * lt->spare_bytes) +
+ (lt->last_chunk_cnt * lt->last_spare_bytes);
+ ecc_offset_in_page = lt->data_bytes + lt->spare_bytes;
+
+ for (chunk = 0; chunk < nchunks;) {
+ /* Do the actual raw read of the ECC bytes */
+ nand_change_read_column_op(chip, ecc_offset_in_page,
+ chip->oob_poi + ecc_offset_in_oob_buf,
+ ecc_len, false);
+
+ chunk++;
+
+ /* When using a "last chunk", the ECC size might vary */
+ if (chunk >= lt->full_chunk_cnt)
+ ecc_len = lt->last_ecc_bytes;
+
+ /* Increment the offsets where ECC will be read and written */
+ ecc_offset_in_oob_buf += ALIGN(lt->ecc_bytes, 32);
+ ecc_offset_in_page += lt->ecc_bytes;
+ if (chunk < lt->full_chunk_cnt)
+ ecc_offset_in_page += lt->data_bytes + lt->spare_bytes;
+ else
+ ecc_offset_in_page += lt->last_data_bytes +
+ lt->last_spare_bytes;
+ }
+
+ return max_bitflips;
+}
+
+static int marvell_nfc_hw_ecc_bch_read_oob_raw(struct mtd_info *mtd,
+ struct nand_chip *chip, int page)
+{
+ /* Invalidate page cache */
+ chip->pagebuf = -1;
+
+ return chip->ecc.read_page_raw(mtd, chip, chip->data_buf, true, page);
+}
+
+static int marvell_nfc_hw_ecc_bch_read_oob(struct mtd_info *mtd,
+ struct nand_chip *chip, int page)
+{
+ /* Invalidate page cache */
+ chip->pagebuf = -1;
+
+ return chip->ecc.read_page(mtd, chip, chip->data_buf, true, page);
+}
+
+/* BCH write helpers */
+static int marvell_nfc_hw_ecc_bch_write_page_raw(struct mtd_info *mtd,
+ struct nand_chip *chip,
+ const u8 *buf,
+ int oob_required, int page)
+{
+ const struct marvell_hw_ecc_layout *lt = to_marvell_nand(chip)->layout;
+ int nchunks = lt->full_chunk_cnt + lt->last_chunk_cnt;
+ int full_chunk_size = lt->data_bytes + lt->spare_bytes + lt->ecc_bytes;
+ int data_len = lt->data_bytes;
+ int spare_len = lt->spare_bytes;
+ int ecc_len = lt->ecc_bytes;
+ int oob_len = spare_len + ecc_len;
+ int spare_offset = 0;
+ int ecc_offset =
+ (lt->full_chunk_cnt * lt->spare_bytes) +
+ (lt->last_chunk_cnt * lt->last_spare_bytes);
+ int chunk;
+
+ nand_prog_page_begin_op(chip, page, 0, NULL, 0);
+
+ for (chunk = 0; chunk < nchunks; chunk++) {
+ if (chunk >= lt->full_chunk_cnt) {
+ data_len = lt->last_data_bytes;
+ spare_len = lt->last_spare_bytes;
+ ecc_len = lt->last_ecc_bytes;
+ oob_len = spare_len + ecc_len;
+ }
+
+ /* Point to the column of the next chunk */
+ nand_change_write_column_op(chip, chunk * full_chunk_size,
+ NULL, 0, false);
+
+ /* Write the data */
+ nand_write_data_op(chip, buf + (chunk * lt->data_bytes),
+ data_len, false);
+
+ if (!oob_required)
+ continue;
+
+ /* Write the spare bytes */
+ if (spare_len)
+ nand_write_data_op(chip, chip->oob_poi + spare_offset,
+ spare_len, false);
+
+ /* Write the ECC bytes */
+ if (ecc_len)
+ nand_write_data_op(chip, chip->oob_poi + ecc_offset,
+ ecc_len, false);
+
+ spare_offset += spare_len;
+ ecc_offset += ALIGN(ecc_len, 32);
+ }
+
+ return nand_prog_page_end_op(chip);
+}
+
+static int
+marvell_nfc_hw_ecc_bch_write_chunk(struct nand_chip *chip, int chunk,
+ const u8 *data, unsigned int data_len,
+ const u8 *spare, unsigned int spare_len,
+ int page)
+{
+ struct marvell_nand_chip *marvell_nand = to_marvell_nand(chip);
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ const struct marvell_hw_ecc_layout *lt = to_marvell_nand(chip)->layout;
+ int nchunks = lt->full_chunk_cnt + lt->last_chunk_cnt;
+ int ret;
+ struct marvell_nfc_op nfc_op = {
+ .ndcb[0] = NDCB0_CMD_TYPE(TYPE_WRITE) | NDCB0_LEN_OVRD,
+ .ndcb[3] = data_len + spare_len,
+ };
+
+ /*
+ * First operation dispatches the CMD_SEQIN command, issue the address
+ * cycles and asks for the first chunk of data.
+ * All operations in the middle (if any) will issue a naked write and
+ * also ask for data.
+ * Last operation dispatches the PAGEPROG command and also asks for the
+ * last chunk of data.
+ */
+ if (chunk == 0) {
+ nfc_op.ndcb[0] |= NDCB0_CMD_XTYPE(XTYPE_WRITE_DISPATCH) |
+ NDCB0_ADDR_CYC(marvell_nand->addr_cyc) |
+ NDCB0_CMD1(NAND_CMD_SEQIN);
+ nfc_op.ndcb[1] |= NDCB1_ADDRS(page);
+ nfc_op.ndcb[2] |= NDCB2_ADDR5(page);
+ } else if (chunk < nchunks - 1) {
+ nfc_op.ndcb[0] |= NDCB0_CMD_XTYPE(XTYPE_NAKED_RW);
+ } else {
+ nfc_op.ndcb[0] |= NDCB0_CMD2(NAND_CMD_PAGEPROG) | NDCB0_DBC |
+ NDCB0_CMD_XTYPE(XTYPE_LAST_NAKED_RW);
+ }
+
+ ret = marvell_nfc_prepare_cmd(chip);
+ if (ret)
+ return ret;
+
+ marvell_nfc_send_cmd(chip, &nfc_op);
+ ret = marvell_nfc_end_cmd(chip, NDSR_WRDREQ,
+ "WRDREQ while loading FIFO (data)");
+ if (ret)
+ return ret;
+
+ /* Transfer the contents */
+ iowrite32_rep(nfc->regs + NDDB, data, FIFO_REP(data_len));
+ iowrite32_rep(nfc->regs + NDDB, spare, FIFO_REP(spare_len));
+
+ return 0;
+}
+
+static int marvell_nfc_hw_ecc_bch_write_page(struct mtd_info *mtd,
+ struct nand_chip *chip,
+ const u8 *buf,
+ int oob_required, int page)
+{
+ const struct marvell_hw_ecc_layout *lt = to_marvell_nand(chip)->layout;
+ int nchunks = lt->full_chunk_cnt + lt->last_chunk_cnt;
+ const u8 *data = buf;
+ const u8 *spare = chip->oob_poi;
+ int data_len = lt->data_bytes;
+ int spare_len = lt->spare_bytes;
+ int chunk, ret;
+
+ /* Spare data will be written anyway, so clear it to avoid garbage */
+ if (!oob_required)
+ memset(chip->oob_poi, 0xFF, mtd->oobsize);
+
+ marvell_nfc_enable_hw_ecc(chip);
+
+ for (chunk = 0; chunk < nchunks; chunk++) {
+ if (chunk >= lt->full_chunk_cnt) {
+ data_len = lt->last_data_bytes;
+ spare_len = lt->last_spare_bytes;
+ }
+
+ marvell_nfc_hw_ecc_bch_write_chunk(chip, chunk, data, data_len,
+ spare, spare_len, page);
+ data += data_len;
+ spare += spare_len;
+
+ /*
+ * Waiting only for CMDD or PAGED is not enough, ECC are
+ * partially written. No flag is set once the operation is
+ * really finished but the ND_RUN bit is cleared, so wait for it
+ * before stepping into the next command.
+ */
+ marvell_nfc_wait_ndrun(chip);
+ }
+
+ ret = marvell_nfc_wait_op(chip,
+ chip->data_interface.timings.sdr.tPROG_max);
+
+ marvell_nfc_disable_hw_ecc(chip);
+
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int marvell_nfc_hw_ecc_bch_write_oob_raw(struct mtd_info *mtd,
+ struct nand_chip *chip,
+ int page)
+{
+ /* Invalidate page cache */
+ chip->pagebuf = -1;
+
+ memset(chip->data_buf, 0xFF, mtd->writesize);
+
+ return chip->ecc.write_page_raw(mtd, chip, chip->data_buf, true, page);
+}
+
+static int marvell_nfc_hw_ecc_bch_write_oob(struct mtd_info *mtd,
+ struct nand_chip *chip, int page)
+{
+ /* Invalidate page cache */
+ chip->pagebuf = -1;
+
+ memset(chip->data_buf, 0xFF, mtd->writesize);
+
+ return chip->ecc.write_page(mtd, chip, chip->data_buf, true, page);
+}
+
+/* NAND framework ->exec_op() hooks and related helpers */
+static void marvell_nfc_parse_instructions(struct nand_chip *chip,
+ const struct nand_subop *subop,
+ struct marvell_nfc_op *nfc_op)
+{
+ const struct nand_op_instr *instr = NULL;
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ bool first_cmd = true;
+ unsigned int op_id;
+ int i;
+
+ /* Reset the input structure as most of its fields will be OR'ed */
+ memset(nfc_op, 0, sizeof(struct marvell_nfc_op));
+
+ for (op_id = 0; op_id < subop->ninstrs; op_id++) {
+ unsigned int offset, naddrs;
+ const u8 *addrs;
+ int len = nand_subop_get_data_len(subop, op_id);
+
+ instr = &subop->instrs[op_id];
+
+ switch (instr->type) {
+ case NAND_OP_CMD_INSTR:
+ if (first_cmd)
+ nfc_op->ndcb[0] |=
+ NDCB0_CMD1(instr->ctx.cmd.opcode);
+ else
+ nfc_op->ndcb[0] |=
+ NDCB0_CMD2(instr->ctx.cmd.opcode) |
+ NDCB0_DBC;
+
+ nfc_op->cle_ale_delay_ns = instr->delay_ns;
+ first_cmd = false;
+ break;
+
+ case NAND_OP_ADDR_INSTR:
+ offset = nand_subop_get_addr_start_off(subop, op_id);
+ naddrs = nand_subop_get_num_addr_cyc(subop, op_id);
+ addrs = &instr->ctx.addr.addrs[offset];
+
+ nfc_op->ndcb[0] |= NDCB0_ADDR_CYC(naddrs);
+
+ for (i = 0; i < min_t(unsigned int, 4, naddrs); i++)
+ nfc_op->ndcb[1] |= addrs[i] << (8 * i);
+
+ if (naddrs >= 5)
+ nfc_op->ndcb[2] |= NDCB2_ADDR5(addrs[5]);
+ if (naddrs >= 6)
+ nfc_op->ndcb[3] |= NDCB3_ADDR6(addrs[6]);
+ if (naddrs == 7)
+ nfc_op->ndcb[3] |= NDCB3_ADDR7(addrs[7]);
+
+ nfc_op->cle_ale_delay_ns = instr->delay_ns;
+ break;
+
+ case NAND_OP_DATA_IN_INSTR:
+ nfc_op->data_instr = instr;
+ nfc_op->data_instr_idx = op_id;
+ nfc_op->ndcb[0] |= NDCB0_CMD_TYPE(TYPE_READ);
+ if (nfc->caps->is_nfcv2) {
+ nfc_op->ndcb[0] |=
+ NDCB0_CMD_XTYPE(XTYPE_MONOLITHIC_RW) |
+ NDCB0_LEN_OVRD;
+ nfc_op->ndcb[3] |= round_up(len, FIFO_DEPTH);
+ }
+ nfc_op->data_delay_ns = instr->delay_ns;
+ break;
+
+ case NAND_OP_DATA_OUT_INSTR:
+ nfc_op->data_instr = instr;
+ nfc_op->data_instr_idx = op_id;
+ nfc_op->ndcb[0] |= NDCB0_CMD_TYPE(TYPE_WRITE);
+ if (nfc->caps->is_nfcv2) {
+ nfc_op->ndcb[0] |=
+ NDCB0_CMD_XTYPE(XTYPE_MONOLITHIC_RW) |
+ NDCB0_LEN_OVRD;
+ nfc_op->ndcb[3] |= round_up(len, FIFO_DEPTH);
+ }
+ nfc_op->data_delay_ns = instr->delay_ns;
+ break;
+
+ case NAND_OP_WAITRDY_INSTR:
+ nfc_op->rdy_timeout_ms = instr->ctx.waitrdy.timeout_ms;
+ nfc_op->rdy_delay_ns = instr->delay_ns;
+ break;
+ }
+ }
+}
+
+static int marvell_nfc_xfer_data_pio(struct nand_chip *chip,
+ const struct nand_subop *subop,
+ struct marvell_nfc_op *nfc_op)
+{
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ const struct nand_op_instr *instr = nfc_op->data_instr;
+ unsigned int op_id = nfc_op->data_instr_idx;
+ unsigned int len = nand_subop_get_data_len(subop, op_id);
+ unsigned int offset = nand_subop_get_data_start_off(subop, op_id);
+ bool reading = (instr->type == NAND_OP_DATA_IN_INSTR);
+ int ret;
+
+ if (instr->ctx.data.force_8bit)
+ marvell_nfc_force_byte_access(chip, true);
+
+ if (reading) {
+ u8 *in = instr->ctx.data.buf.in + offset;
+
+ ret = marvell_nfc_xfer_data_in_pio(nfc, in, len);
+ } else {
+ const u8 *out = instr->ctx.data.buf.out + offset;
+
+ ret = marvell_nfc_xfer_data_out_pio(nfc, out, len);
+ }
+
+ if (instr->ctx.data.force_8bit)
+ marvell_nfc_force_byte_access(chip, false);
+
+ return ret;
+}
+
+static int marvell_nfc_monolithic_access_exec(struct nand_chip *chip,
+ const struct nand_subop *subop)
+{
+ struct marvell_nfc_op nfc_op;
+ bool reading;
+ int ret;
+
+ marvell_nfc_parse_instructions(chip, subop, &nfc_op);
+ reading = (nfc_op.data_instr->type == NAND_OP_DATA_IN_INSTR);
+
+ ret = marvell_nfc_prepare_cmd(chip);
+ if (ret)
+ return ret;
+
+ marvell_nfc_send_cmd(chip, &nfc_op);
+ ret = marvell_nfc_end_cmd(chip, NDSR_RDDREQ | NDSR_WRDREQ,
+ "RDDREQ/WRDREQ while draining raw data");
+ if (ret)
+ return ret;
+
+ cond_delay(nfc_op.cle_ale_delay_ns);
+
+ if (reading) {
+ if (nfc_op.rdy_timeout_ms) {
+ ret = marvell_nfc_wait_op(chip, nfc_op.rdy_timeout_ms);
+ if (ret)
+ return ret;
+ }
+
+ cond_delay(nfc_op.rdy_delay_ns);
+ }
+
+ marvell_nfc_xfer_data_pio(chip, subop, &nfc_op);
+ ret = marvell_nfc_wait_cmdd(chip);
+ if (ret)
+ return ret;
+
+ cond_delay(nfc_op.data_delay_ns);
+
+ if (!reading) {
+ if (nfc_op.rdy_timeout_ms) {
+ ret = marvell_nfc_wait_op(chip, nfc_op.rdy_timeout_ms);
+ if (ret)
+ return ret;
+ }
+
+ cond_delay(nfc_op.rdy_delay_ns);
+ }
+
+ /*
+ * NDCR ND_RUN bit should be cleared automatically at the end of each
+ * operation but experience shows that the behavior is buggy when it
+ * comes to writes (with LEN_OVRD). Clear it by hand in this case.
+ */
+ if (!reading) {
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+
+ writel_relaxed(readl(nfc->regs + NDCR) & ~NDCR_ND_RUN,
+ nfc->regs + NDCR);
+ }
+
+ return 0;
+}
+
+static int marvell_nfc_naked_access_exec(struct nand_chip *chip,
+ const struct nand_subop *subop)
+{
+ struct marvell_nfc_op nfc_op;
+ int ret;
+
+ marvell_nfc_parse_instructions(chip, subop, &nfc_op);
+
+ /*
+ * Naked access are different in that they need to be flagged as naked
+ * by the controller. Reset the controller registers fields that inform
+ * on the type and refill them according to the ongoing operation.
+ */
+ nfc_op.ndcb[0] &= ~(NDCB0_CMD_TYPE(TYPE_MASK) |
+ NDCB0_CMD_XTYPE(XTYPE_MASK));
+ switch (subop->instrs[0].type) {
+ case NAND_OP_CMD_INSTR:
+ nfc_op.ndcb[0] |= NDCB0_CMD_TYPE(TYPE_NAKED_CMD);
+ break;
+ case NAND_OP_ADDR_INSTR:
+ nfc_op.ndcb[0] |= NDCB0_CMD_TYPE(TYPE_NAKED_ADDR);
+ break;
+ case NAND_OP_DATA_IN_INSTR:
+ nfc_op.ndcb[0] |= NDCB0_CMD_TYPE(TYPE_READ) |
+ NDCB0_CMD_XTYPE(XTYPE_LAST_NAKED_RW);
+ break;
+ case NAND_OP_DATA_OUT_INSTR:
+ nfc_op.ndcb[0] |= NDCB0_CMD_TYPE(TYPE_WRITE) |
+ NDCB0_CMD_XTYPE(XTYPE_LAST_NAKED_RW);
+ break;
+ default:
+ /* This should never happen */
+ break;
+ }
+
+ ret = marvell_nfc_prepare_cmd(chip);
+ if (ret)
+ return ret;
+
+ marvell_nfc_send_cmd(chip, &nfc_op);
+
+ if (!nfc_op.data_instr) {
+ ret = marvell_nfc_wait_cmdd(chip);
+ cond_delay(nfc_op.cle_ale_delay_ns);
+ return ret;
+ }
+
+ ret = marvell_nfc_end_cmd(chip, NDSR_RDDREQ | NDSR_WRDREQ,
+ "RDDREQ/WRDREQ while draining raw data");
+ if (ret)
+ return ret;
+
+ marvell_nfc_xfer_data_pio(chip, subop, &nfc_op);
+ ret = marvell_nfc_wait_cmdd(chip);
+ if (ret)
+ return ret;
+
+ /*
+ * NDCR ND_RUN bit should be cleared automatically at the end of each
+ * operation but experience shows that the behavior is buggy when it
+ * comes to writes (with LEN_OVRD). Clear it by hand in this case.
+ */
+ if (subop->instrs[0].type == NAND_OP_DATA_OUT_INSTR) {
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+
+ writel_relaxed(readl(nfc->regs + NDCR) & ~NDCR_ND_RUN,
+ nfc->regs + NDCR);
+ }
+
+ return 0;
+}
+
+static int marvell_nfc_naked_waitrdy_exec(struct nand_chip *chip,
+ const struct nand_subop *subop)
+{
+ struct marvell_nfc_op nfc_op;
+ int ret;
+
+ marvell_nfc_parse_instructions(chip, subop, &nfc_op);
+
+ ret = marvell_nfc_wait_op(chip, nfc_op.rdy_timeout_ms);
+ cond_delay(nfc_op.rdy_delay_ns);
+
+ return ret;
+}
+
+static int marvell_nfc_read_id_type_exec(struct nand_chip *chip,
+ const struct nand_subop *subop)
+{
+ struct marvell_nfc_op nfc_op;
+ int ret;
+
+ marvell_nfc_parse_instructions(chip, subop, &nfc_op);
+ nfc_op.ndcb[0] &= ~NDCB0_CMD_TYPE(TYPE_READ);
+ nfc_op.ndcb[0] |= NDCB0_CMD_TYPE(TYPE_READ_ID);
+
+ ret = marvell_nfc_prepare_cmd(chip);
+ if (ret)
+ return ret;
+
+ marvell_nfc_send_cmd(chip, &nfc_op);
+ ret = marvell_nfc_end_cmd(chip, NDSR_RDDREQ,
+ "RDDREQ while reading ID");
+ if (ret)
+ return ret;
+
+ cond_delay(nfc_op.cle_ale_delay_ns);
+
+ if (nfc_op.rdy_timeout_ms) {
+ ret = marvell_nfc_wait_op(chip, nfc_op.rdy_timeout_ms);
+ if (ret)
+ return ret;
+ }
+
+ cond_delay(nfc_op.rdy_delay_ns);
+
+ marvell_nfc_xfer_data_pio(chip, subop, &nfc_op);
+ ret = marvell_nfc_wait_cmdd(chip);
+ if (ret)
+ return ret;
+
+ cond_delay(nfc_op.data_delay_ns);
+
+ return 0;
+}
+
+static int marvell_nfc_read_status_exec(struct nand_chip *chip,
+ const struct nand_subop *subop)
+{
+ struct marvell_nfc_op nfc_op;
+ int ret;
+
+ marvell_nfc_parse_instructions(chip, subop, &nfc_op);
+ nfc_op.ndcb[0] &= ~NDCB0_CMD_TYPE(TYPE_READ);
+ nfc_op.ndcb[0] |= NDCB0_CMD_TYPE(TYPE_STATUS);
+
+ ret = marvell_nfc_prepare_cmd(chip);
+ if (ret)
+ return ret;
+
+ marvell_nfc_send_cmd(chip, &nfc_op);
+ ret = marvell_nfc_end_cmd(chip, NDSR_RDDREQ,
+ "RDDREQ while reading status");
+ if (ret)
+ return ret;
+
+ cond_delay(nfc_op.cle_ale_delay_ns);
+
+ if (nfc_op.rdy_timeout_ms) {
+ ret = marvell_nfc_wait_op(chip, nfc_op.rdy_timeout_ms);
+ if (ret)
+ return ret;
+ }
+
+ cond_delay(nfc_op.rdy_delay_ns);
+
+ marvell_nfc_xfer_data_pio(chip, subop, &nfc_op);
+ ret = marvell_nfc_wait_cmdd(chip);
+ if (ret)
+ return ret;
+
+ cond_delay(nfc_op.data_delay_ns);
+
+ return 0;
+}
+
+static int marvell_nfc_reset_cmd_type_exec(struct nand_chip *chip,
+ const struct nand_subop *subop)
+{
+ struct marvell_nfc_op nfc_op;
+ int ret;
+
+ marvell_nfc_parse_instructions(chip, subop, &nfc_op);
+ nfc_op.ndcb[0] |= NDCB0_CMD_TYPE(TYPE_RESET);
+
+ ret = marvell_nfc_prepare_cmd(chip);
+ if (ret)
+ return ret;
+
+ marvell_nfc_send_cmd(chip, &nfc_op);
+ ret = marvell_nfc_wait_cmdd(chip);
+ if (ret)
+ return ret;
+
+ cond_delay(nfc_op.cle_ale_delay_ns);
+
+ ret = marvell_nfc_wait_op(chip, nfc_op.rdy_timeout_ms);
+ if (ret)
+ return ret;
+
+ cond_delay(nfc_op.rdy_delay_ns);
+
+ return 0;
+}
+
+static int marvell_nfc_erase_cmd_type_exec(struct nand_chip *chip,
+ const struct nand_subop *subop)
+{
+ struct marvell_nfc_op nfc_op;
+ int ret;
+
+ marvell_nfc_parse_instructions(chip, subop, &nfc_op);
+ nfc_op.ndcb[0] |= NDCB0_CMD_TYPE(TYPE_ERASE);
+
+ ret = marvell_nfc_prepare_cmd(chip);
+ if (ret)
+ return ret;
+
+ marvell_nfc_send_cmd(chip, &nfc_op);
+ ret = marvell_nfc_wait_cmdd(chip);
+ if (ret)
+ return ret;
+
+ cond_delay(nfc_op.cle_ale_delay_ns);
+
+ ret = marvell_nfc_wait_op(chip, nfc_op.rdy_timeout_ms);
+ if (ret)
+ return ret;
+
+ cond_delay(nfc_op.rdy_delay_ns);
+
+ return 0;
+}
+
+static const struct nand_op_parser marvell_nfcv2_op_parser = NAND_OP_PARSER(
+ /* Monolithic reads/writes */
+ NAND_OP_PARSER_PATTERN(
+ marvell_nfc_monolithic_access_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_ADDR_ELEM(true, MAX_ADDRESS_CYC_NFCV2),
+ NAND_OP_PARSER_PAT_CMD_ELEM(true),
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(true),
+ NAND_OP_PARSER_PAT_DATA_IN_ELEM(false, MAX_CHUNK_SIZE)),
+ NAND_OP_PARSER_PATTERN(
+ marvell_nfc_monolithic_access_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_ADDR_ELEM(false, MAX_ADDRESS_CYC_NFCV2),
+ NAND_OP_PARSER_PAT_DATA_OUT_ELEM(false, MAX_CHUNK_SIZE),
+ NAND_OP_PARSER_PAT_CMD_ELEM(true),
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(true)),
+ /* Naked commands */
+ NAND_OP_PARSER_PATTERN(
+ marvell_nfc_naked_access_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false)),
+ NAND_OP_PARSER_PATTERN(
+ marvell_nfc_naked_access_exec,
+ NAND_OP_PARSER_PAT_ADDR_ELEM(false, MAX_ADDRESS_CYC_NFCV2)),
+ NAND_OP_PARSER_PATTERN(
+ marvell_nfc_naked_access_exec,
+ NAND_OP_PARSER_PAT_DATA_IN_ELEM(false, MAX_CHUNK_SIZE)),
+ NAND_OP_PARSER_PATTERN(
+ marvell_nfc_naked_access_exec,
+ NAND_OP_PARSER_PAT_DATA_OUT_ELEM(false, MAX_CHUNK_SIZE)),
+ NAND_OP_PARSER_PATTERN(
+ marvell_nfc_naked_waitrdy_exec,
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(false)),
+ );
+
+static const struct nand_op_parser marvell_nfcv1_op_parser = NAND_OP_PARSER(
+ /* Naked commands not supported, use a function for each pattern */
+ NAND_OP_PARSER_PATTERN(
+ marvell_nfc_read_id_type_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_ADDR_ELEM(false, MAX_ADDRESS_CYC_NFCV1),
+ NAND_OP_PARSER_PAT_DATA_IN_ELEM(false, 8)),
+ NAND_OP_PARSER_PATTERN(
+ marvell_nfc_erase_cmd_type_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_ADDR_ELEM(false, MAX_ADDRESS_CYC_NFCV1),
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(false)),
+ NAND_OP_PARSER_PATTERN(
+ marvell_nfc_read_status_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_DATA_IN_ELEM(false, 1)),
+ NAND_OP_PARSER_PATTERN(
+ marvell_nfc_reset_cmd_type_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(false)),
+ NAND_OP_PARSER_PATTERN(
+ marvell_nfc_naked_waitrdy_exec,
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(false)),
+ );
+
+static int marvell_nfc_exec_op(struct nand_chip *chip,
+ const struct nand_operation *op,
+ bool check_only)
+{
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+
+ if (nfc->caps->is_nfcv2)
+ return nand_op_parser_exec_op(chip, &marvell_nfcv2_op_parser,
+ op, check_only);
+ else
+ return nand_op_parser_exec_op(chip, &marvell_nfcv1_op_parser,
+ op, check_only);
+}
+
+/*
+ * HW ECC layouts, identical to old pxa3xx_nand driver,
+ * to be fully backward compatible.
+ */
+static int marvell_nand_ooblayout_ecc(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ struct nand_chip *chip = mtd_to_nand(mtd);
+ const struct marvell_hw_ecc_layout *lt = to_marvell_nand(chip)->layout;
+ int nchunks = lt->full_chunk_cnt;
+
+ if (section >= nchunks)
+ return -ERANGE;
+
+ oobregion->offset = ((lt->spare_bytes + lt->ecc_bytes) * section) +
+ lt->spare_bytes;
+ oobregion->length = lt->ecc_bytes;
+
+ return 0;
+}
+
+static int marvell_nand_ooblayout_free(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ struct nand_chip *chip = mtd_to_nand(mtd);
+ const struct marvell_hw_ecc_layout *lt = to_marvell_nand(chip)->layout;
+ int nchunks = lt->full_chunk_cnt;
+
+ if (section >= nchunks)
+ return -ERANGE;
+
+ if (!lt->spare_bytes)
+ return 0;
+
+ oobregion->offset = section * (lt->spare_bytes + lt->ecc_bytes);
+ oobregion->length = lt->spare_bytes;
+ if (!section) {
+ /*
+ * Bootrom looks in bytes 0 & 5 for bad blocks for the
+ * 4KB page / 4bit BCH combination.
+ */
+ if (mtd->writesize == 4096 && lt->data_bytes == 2048) {
+ oobregion->offset += 6;
+ oobregion->length -= 6;
+ } else {
+ oobregion->offset += 2;
+ oobregion->length -= 2;
+ }
+ }
+
+ return 0;
+}
+
+static const struct mtd_ooblayout_ops marvell_nand_ooblayout_ops = {
+ .ecc = marvell_nand_ooblayout_ecc,
+ .free = marvell_nand_ooblayout_free,
+};
+
+static int marvell_nand_hw_ecc_ctrl_init(struct mtd_info *mtd,
+ struct nand_ecc_ctrl *ecc)
+{
+ struct nand_chip *chip = mtd_to_nand(mtd);
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ const struct marvell_hw_ecc_layout *l;
+ int i;
+
+ if (!nfc->caps->is_nfcv2 &&
+ (mtd->writesize + mtd->oobsize > MAX_CHUNK_SIZE)) {
+ dev_err(nfc->dev,
+ "NFCv1: writesize (%d) cannot be bigger than a chunk (%d)\n",
+ mtd->writesize, MAX_CHUNK_SIZE - mtd->oobsize);
+ return -ENOTSUPP;
+ }
+
+ to_marvell_nand(chip)->layout = NULL;
+ for (i = 0; i < ARRAY_SIZE(marvell_nfc_layouts); i++) {
+ l = &marvell_nfc_layouts[i];
+ if (mtd->writesize == l->writesize &&
+ ecc->size == l->chunk && ecc->strength == l->strength) {
+ to_marvell_nand(chip)->layout = l;
+ break;
+ }
+ }
+
+ if (!to_marvell_nand(chip)->layout ||
+ (!nfc->caps->is_nfcv2 && ecc->strength > 1)) {
+ dev_err(nfc->dev,
+ "ECC strength %d at page size %d is not supported\n",
+ ecc->strength, mtd->writesize);
+ return -ENOTSUPP;
+ }
+
+ mtd_set_ooblayout(mtd, &marvell_nand_ooblayout_ops);
+ ecc->steps = l->full_chunk_cnt + l->last_chunk_cnt;
+ ecc->size = l->data_bytes;
+
+ if (ecc->strength == 1) {
+ chip->ecc.algo = NAND_ECC_HAMMING;
+ ecc->read_page_raw = marvell_nfc_hw_ecc_hmg_read_page_raw;
+ ecc->read_page = marvell_nfc_hw_ecc_hmg_read_page;
+ ecc->read_oob_raw = marvell_nfc_hw_ecc_hmg_read_oob_raw;
+ ecc->read_oob = ecc->read_oob_raw;
+ ecc->write_page_raw = marvell_nfc_hw_ecc_hmg_write_page_raw;
+ ecc->write_page = marvell_nfc_hw_ecc_hmg_write_page;
+ ecc->write_oob_raw = marvell_nfc_hw_ecc_hmg_write_oob_raw;
+ ecc->write_oob = ecc->write_oob_raw;
+ } else {
+ chip->ecc.algo = NAND_ECC_BCH;
+ ecc->strength = 16;
+ ecc->read_page_raw = marvell_nfc_hw_ecc_bch_read_page_raw;
+ ecc->read_page = marvell_nfc_hw_ecc_bch_read_page;
+ ecc->read_oob_raw = marvell_nfc_hw_ecc_bch_read_oob_raw;
+ ecc->read_oob = marvell_nfc_hw_ecc_bch_read_oob;
+ ecc->write_page_raw = marvell_nfc_hw_ecc_bch_write_page_raw;
+ ecc->write_page = marvell_nfc_hw_ecc_bch_write_page;
+ ecc->write_oob_raw = marvell_nfc_hw_ecc_bch_write_oob_raw;
+ ecc->write_oob = marvell_nfc_hw_ecc_bch_write_oob;
+ }
+
+ return 0;
+}
+
+static int marvell_nand_ecc_init(struct mtd_info *mtd,
+ struct nand_ecc_ctrl *ecc)
+{
+ struct nand_chip *chip = mtd_to_nand(mtd);
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ int ret;
+
+ if ((ecc->mode != NAND_ECC_NONE) && (!ecc->size || !ecc->strength)) {
+ if (chip->ecc_step_ds && chip->ecc_strength_ds) {
+ ecc->size = chip->ecc_step_ds;
+ ecc->strength = chip->ecc_strength_ds;
+ } else {
+ dev_info(nfc->dev,
+ "No minimum ECC strength, using 1b/512B\n");
+ ecc->size = 512;
+ ecc->strength = 1;
+ }
+ }
+
+ switch (ecc->mode) {
+ case NAND_ECC_HW:
+ ret = marvell_nand_hw_ecc_ctrl_init(mtd, ecc);
+ if (ret)
+ return ret;
+ break;
+ case NAND_ECC_NONE:
+ chip->ecc.algo = 0;
+ case NAND_ECC_SOFT:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static u8 bbt_pattern[] = {'M', 'V', 'B', 'b', 't', '0' };
+static u8 bbt_mirror_pattern[] = {'1', 't', 'b', 'B', 'V', 'M' };
+
+static struct nand_bbt_descr bbt_main_descr = {
+ .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE |
+ NAND_BBT_2BIT | NAND_BBT_VERSION,
+ .offs = 8,
+ .len = 6,
+ .veroffs = 14,
+ .maxblocks = 8, /* Last 8 blocks in each chip */
+ .pattern = bbt_pattern
+};
+
+static struct nand_bbt_descr bbt_mirror_descr = {
+ .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE |
+ NAND_BBT_2BIT | NAND_BBT_VERSION,
+ .offs = 8,
+ .len = 6,
+ .veroffs = 14,
+ .maxblocks = 8, /* Last 8 blocks in each chip */
+ .pattern = bbt_mirror_pattern
+};
+
+static int marvell_nfc_setup_data_interface(struct mtd_info *mtd, int chipnr,
+ const struct nand_data_interface
+ *conf)
+{
+ struct nand_chip *chip = mtd_to_nand(mtd);
+ struct marvell_nand_chip *marvell_nand = to_marvell_nand(chip);
+ struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
+ unsigned int period_ns = 1000000000 / clk_get_rate(nfc->ecc_clk) * 2;
+ const struct nand_sdr_timings *sdr;
+ struct marvell_nfc_timings nfc_tmg;
+ int read_delay;
+
+ sdr = nand_get_sdr_timings(conf);
+ if (IS_ERR(sdr))
+ return PTR_ERR(sdr);
+
+ /*
+ * SDR timings are given in pico-seconds while NFC timings must be
+ * expressed in NAND controller clock cycles, which is half of the
+ * frequency of the accessible ECC clock retrieved by clk_get_rate().
+ * This is not written anywhere in the datasheet but was observed
+ * with an oscilloscope.
+ *
+ * NFC datasheet gives equations from which thoses calculations
+ * are derived, they tend to be slightly more restrictives than the
+ * given core timings and may improve the overall speed.
+ */
+ nfc_tmg.tRP = TO_CYCLES(DIV_ROUND_UP(sdr->tRC_min, 2), period_ns) - 1;
+ nfc_tmg.tRH = nfc_tmg.tRP;
+ nfc_tmg.tWP = TO_CYCLES(DIV_ROUND_UP(sdr->tWC_min, 2), period_ns) - 1;
+ nfc_tmg.tWH = nfc_tmg.tWP;
+ nfc_tmg.tCS = TO_CYCLES(sdr->tCS_min, period_ns);
+ nfc_tmg.tCH = TO_CYCLES(sdr->tCH_min, period_ns) - 1;
+ nfc_tmg.tADL = TO_CYCLES(sdr->tADL_min, period_ns);
+ /*
+ * Read delay is the time of propagation from SoC pins to NFC internal
+ * logic. With non-EDO timings, this is MIN_RD_DEL_CNT clock cycles. In
+ * EDO mode, an additional delay of tRH must be taken into account so
+ * the data is sampled on the falling edge instead of the rising edge.
+ */
+ read_delay = sdr->tRC_min >= 30000 ?
+ MIN_RD_DEL_CNT : MIN_RD_DEL_CNT + nfc_tmg.tRH;
+
+ nfc_tmg.tAR = TO_CYCLES(sdr->tAR_min, period_ns);
+ /*
+ * tWHR and tRHW are supposed to be read to write delays (and vice
+ * versa) but in some cases, ie. when doing a change column, they must
+ * be greater than that to be sure tCCS delay is respected.
+ */
+ nfc_tmg.tWHR = TO_CYCLES(max_t(int, sdr->tWHR_min, sdr->tCCS_min),
+ period_ns) - 2,
+ nfc_tmg.tRHW = TO_CYCLES(max_t(int, sdr->tRHW_min, sdr->tCCS_min),
+ period_ns);
+
+ /* Use WAIT_MODE (wait for RB line) instead of only relying on delays */
+ nfc_tmg.tR = TO_CYCLES(sdr->tWB_max, period_ns);
+
+ if (chipnr < 0)
+ return 0;
+
+ marvell_nand->ndtr0 =
+ NDTR0_TRP(nfc_tmg.tRP) |
+ NDTR0_TRH(nfc_tmg.tRH) |
+ NDTR0_ETRP(nfc_tmg.tRP) |
+ NDTR0_TWP(nfc_tmg.tWP) |
+ NDTR0_TWH(nfc_tmg.tWH) |
+ NDTR0_TCS(nfc_tmg.tCS) |
+ NDTR0_TCH(nfc_tmg.tCH) |
+ NDTR0_RD_CNT_DEL(read_delay) |
+ NDTR0_SELCNTR |
+ NDTR0_TADL(nfc_tmg.tADL);
+
+ marvell_nand->ndtr1 =
+ NDTR1_TAR(nfc_tmg.tAR) |
+ NDTR1_TWHR(nfc_tmg.tWHR) |
+ NDTR1_TRHW(nfc_tmg.tRHW) |
+ NDTR1_WAIT_MODE |
+ NDTR1_TR(nfc_tmg.tR);
+
+ writel_relaxed(marvell_nand->ndtr0, nfc->regs + NDTR0);
+ writel_relaxed(marvell_nand->ndtr1, nfc->regs + NDTR1);
+
+ return 0;
+}
+
+static int marvell_nand_chip_init(struct device *dev, struct marvell_nfc *nfc,
+ struct device_node *np)
+{
+ struct pxa3xx_nand_platform_data *pdata = dev_get_platdata(dev);
+ struct marvell_nand_chip *marvell_nand;
+ struct mtd_info *mtd;
+ struct nand_chip *chip;
+ int nsels, ret, i;
+ u32 cs, rb;
+
+ /*
+ * The legacy "num-cs" property indicates the number of CS on the only
+ * chip connected to the controller (legacy bindings does not support
+ * more than one chip). CS are only incremented one by one while the RB
+ * pin is always the #0.
+ *
+ * When not using legacy bindings, a couple of "reg" and "marvell,rb"
+ * properties must be filled. For each chip, expressed as a subnode,
+ * "reg" points to the CS lines and "marvell,rb" to the RB line.
+ */
+ if (pdata) {
+ nsels = 1;
+ } else if (nfc->caps->legacy_of_bindings) {
+ if (!of_get_property(np, "num-cs", &nsels)) {
+ dev_err(dev, "missing num-cs property\n");
+ return -EINVAL;
+ }
+ } else {
+ if (!of_get_property(np, "reg", &nsels)) {
+ dev_err(dev, "missing reg property\n");
+ return -EINVAL;
+ }
+ }
+
+ if (!pdata)
+ nsels /= sizeof(u32);
+ if (!nsels) {
+ dev_err(dev, "invalid reg property size\n");
+ return -EINVAL;
+ }
+
+ /* Alloc the nand chip structure */
+ marvell_nand = devm_kzalloc(dev, sizeof(*marvell_nand) +
+ (nsels *
+ sizeof(struct marvell_nand_chip_sel)),
+ GFP_KERNEL);
+ if (!marvell_nand) {
+ dev_err(dev, "could not allocate chip structure\n");
+ return -ENOMEM;
+ }
+
+ marvell_nand->nsels = nsels;
+ marvell_nand->selected_die = -1;
+
+ for (i = 0; i < nsels; i++) {
+ if (pdata || nfc->caps->legacy_of_bindings) {
+ /*
+ * Legacy bindings use the CS lines in natural
+ * order (0, 1, ...)
+ */
+ cs = i;
+ } else {
+ /* Retrieve CS id */
+ ret = of_property_read_u32_index(np, "reg", i, &cs);
+ if (ret) {
+ dev_err(dev, "could not retrieve reg property: %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ if (cs >= nfc->caps->max_cs_nb) {
+ dev_err(dev, "invalid reg value: %u (max CS = %d)\n",
+ cs, nfc->caps->max_cs_nb);
+ return -EINVAL;
+ }
+
+ if (test_and_set_bit(cs, &nfc->assigned_cs)) {
+ dev_err(dev, "CS %d already assigned\n", cs);
+ return -EINVAL;
+ }
+
+ /*
+ * The cs variable represents the chip select id, which must be
+ * converted in bit fields for NDCB0 and NDCB2 to select the
+ * right chip. Unfortunately, due to a lack of information on
+ * the subject and incoherent documentation, the user should not
+ * use CS1 and CS3 at all as asserting them is not supported in
+ * a reliable way (due to multiplexing inside ADDR5 field).
+ */
+ marvell_nand->sels[i].cs = cs;
+ switch (cs) {
+ case 0:
+ case 2:
+ marvell_nand->sels[i].ndcb0_csel = 0;
+ break;
+ case 1:
+ case 3:
+ marvell_nand->sels[i].ndcb0_csel = NDCB0_CSEL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Retrieve RB id */
+ if (pdata || nfc->caps->legacy_of_bindings) {
+ /* Legacy bindings always use RB #0 */
+ rb = 0;
+ } else {
+ ret = of_property_read_u32_index(np, "marvell,rb", i,
+ &rb);
+ if (ret) {
+ dev_err(dev,
+ "could not retrieve RB property: %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ if (rb >= nfc->caps->max_rb_nb) {
+ dev_err(dev, "invalid reg value: %u (max RB = %d)\n",
+ rb, nfc->caps->max_rb_nb);
+ return -EINVAL;
+ }
+
+ marvell_nand->sels[i].rb = rb;
+ }
+
+ chip = &marvell_nand->chip;
+ chip->controller = &nfc->controller;
+ nand_set_flash_node(chip, np);
+
+ chip->exec_op = marvell_nfc_exec_op;
+ chip->select_chip = marvell_nfc_select_chip;
+ if (nfc->caps->is_nfcv2 &&
+ !of_property_read_bool(np, "marvell,nand-keep-config"))
+ chip->setup_data_interface = marvell_nfc_setup_data_interface;
+
+ mtd = nand_to_mtd(chip);
+ mtd->dev.parent = dev;
+
+ /*
+ * Default to HW ECC engine mode. If the nand-ecc-mode property is given
+ * in the DT node, this entry will be overwritten in nand_scan_ident().
+ */
+ chip->ecc.mode = NAND_ECC_HW;
+
+ ret = nand_scan_ident(mtd, marvell_nand->nsels, NULL);
+ if (ret) {
+ dev_err(dev, "could not identify the nand chip\n");
+ return ret;
+ }
+
+ if (pdata && pdata->flash_bbt)
+ chip->bbt_options |= NAND_BBT_USE_FLASH;
+
+ if (chip->bbt_options & NAND_BBT_USE_FLASH) {
+ /*
+ * We'll use a bad block table stored in-flash and don't
+ * allow writing the bad block marker to the flash.
+ */
+ chip->bbt_options |= NAND_BBT_NO_OOB_BBM;
+ chip->bbt_td = &bbt_main_descr;
+ chip->bbt_md = &bbt_mirror_descr;
+ }
+
+ /*
+ * With RA_START bit set in NDCR, columns takes two address cycles. This
+ * means addressing a chip with more than 256 pages needs a fifth
+ * address cycle. Addressing a chip using CS 2 or 3 should also needs
+ * this additional cycle but due to insistance in the documentation and
+ * lack of hardware to test this situation, this case has been dropped
+ * and is not supported by this driver.
+ */
+ marvell_nand->addr_cyc = 4;
+ if (chip->options & NAND_ROW_ADDR_3)
+ marvell_nand->addr_cyc = 5;
+
+ if (pdata) {
+ chip->ecc.size = pdata->ecc_step_size;
+ chip->ecc.strength = pdata->ecc_strength;
+ }
+
+ ret = marvell_nand_ecc_init(mtd, &chip->ecc);
+ if (ret) {
+ dev_err(dev, "ECC init failed: %d\n", ret);
+ return ret;
+ }
+
+ if (chip->ecc.mode == NAND_ECC_HW) {
+ /*
+ * Subpage write not available with hardware ECC, prohibit also
+ * subpage read as in userspace subpage acces would still be
+ * allowed and subpage write, if used, would lead to numerous
+ * uncorrectable ECC errors.
+ */
+ chip->options |= NAND_NO_SUBPAGE_WRITE;
+ }
+
+ if (pdata || nfc->caps->legacy_of_bindings) {
+ /*
+ * We keep the MTD name unchanged to avoid breaking platforms
+ * where the MTD cmdline parser is used and the bootloader
+ * has not been updated to use the new naming scheme.
+ */
+ mtd->name = "pxa3xx_nand-0";
+ } else if (!mtd->name) {
+ /*
+ * If the new bindings are used and the bootloader has not been
+ * updated to pass a new mtdparts parameter on the cmdline, you
+ * should define the following property in your NAND node, ie:
+ *
+ * label = "main-storage";
+ *
+ * This way, mtd->name will be set by the core when
+ * nand_set_flash_node() is called.
+ */
+ mtd->name = devm_kasprintf(nfc->dev, GFP_KERNEL,
+ "%s:nand.%d", dev_name(nfc->dev),
+ marvell_nand->sels[0].cs);
+ if (!mtd->name) {
+ dev_err(nfc->dev, "Failed to allocate mtd->name\n");
+ return -ENOMEM;
+ }
+ }
+
+ ret = nand_scan_tail(mtd);
+ if (ret) {
+ dev_err(dev, "nand_scan_tail failed: %d\n", ret);
+ return ret;
+ }
+
+ if (pdata)
+ /* Legacy bindings support only one chip */
+ ret = mtd_device_register(mtd, pdata->parts[0],
+ pdata->nr_parts[0]);
+ else
+ ret = mtd_device_register(mtd, NULL, 0);
+ if (ret) {
+ dev_err(dev, "failed to register mtd device: %d\n", ret);
+ nand_release(mtd);
+ return ret;
+ }
+
+ list_add_tail(&marvell_nand->node, &nfc->chips);
+
+ return 0;
+}
+
+static int marvell_nand_chips_init(struct device *dev, struct marvell_nfc *nfc)
+{
+ struct device_node *np = dev->of_node;
+ struct device_node *nand_np;
+ int max_cs = nfc->caps->max_cs_nb;
+ int nchips;
+ int ret;
+
+ if (!np)
+ nchips = 1;
+ else
+ nchips = of_get_child_count(np);
+
+ if (nchips > max_cs) {
+ dev_err(dev, "too many NAND chips: %d (max = %d CS)\n", nchips,
+ max_cs);
+ return -EINVAL;
+ }
+
+ /*
+ * Legacy bindings do not use child nodes to exhibit NAND chip
+ * properties and layout. Instead, NAND properties are mixed with the
+ * controller's and a single subnode presents the memory layout.
+ */
+ if (nfc->caps->legacy_of_bindings) {
+ ret = marvell_nand_chip_init(dev, nfc, np);
+ return ret;
+ }
+
+ for_each_child_of_node(np, nand_np) {
+ ret = marvell_nand_chip_init(dev, nfc, nand_np);
+ if (ret) {
+ of_node_put(nand_np);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static void marvell_nand_chips_cleanup(struct marvell_nfc *nfc)
+{
+ struct marvell_nand_chip *entry, *temp;
+
+ list_for_each_entry_safe(entry, temp, &nfc->chips, node) {
+ nand_release(nand_to_mtd(&entry->chip));
+ list_del(&entry->node);
+ }
+}
+
+static int marvell_nfc_init_dma(struct marvell_nfc *nfc)
+{
+ struct platform_device *pdev = container_of(nfc->dev,
+ struct platform_device,
+ dev);
+ struct dma_slave_config config = {};
+ struct resource *r;
+ dma_cap_mask_t mask;
+ struct pxad_param param;
+ int ret;
+
+ if (!IS_ENABLED(CONFIG_PXA_DMA)) {
+ dev_warn(nfc->dev,
+ "DMA not enabled in configuration\n");
+ return -ENOTSUPP;
+ }
+
+ ret = dma_set_mask_and_coherent(nfc->dev, DMA_BIT_MASK(32));
+ if (ret)
+ return ret;
+
+ r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+ if (!r) {
+ dev_err(nfc->dev, "No resource defined for data DMA\n");
+ return -ENXIO;
+ }
+
+ param.drcmr = r->start;
+ param.prio = PXAD_PRIO_LOWEST;
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+ nfc->dma_chan =
+ dma_request_slave_channel_compat(mask, pxad_filter_fn,
+ ¶m, nfc->dev,
+ "data");
+ if (!nfc->dma_chan) {
+ dev_err(nfc->dev,
+ "Unable to request data DMA channel\n");
+ return -ENODEV;
+ }
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!r)
+ return -ENXIO;
+
+ config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ config.src_addr = r->start + NDDB;
+ config.dst_addr = r->start + NDDB;
+ config.src_maxburst = 32;
+ config.dst_maxburst = 32;
+ ret = dmaengine_slave_config(nfc->dma_chan, &config);
+ if (ret < 0) {
+ dev_err(nfc->dev, "Failed to configure DMA channel\n");
+ return ret;
+ }
+
+ /*
+ * DMA must act on length multiple of 32 and this length may be
+ * bigger than the destination buffer. Use this buffer instead
+ * for DMA transfers and then copy the desired amount of data to
+ * the provided buffer.
+ */
+ nfc->dma_buf = kmalloc(MAX_CHUNK_SIZE, GFP_DMA);
+ if (!nfc->dma_buf)
+ return -ENOMEM;
+
+ nfc->use_dma = true;
+
+ return 0;
+}
+
+static int marvell_nfc_init(struct marvell_nfc *nfc)
+{
+ struct device_node *np = nfc->dev->of_node;
+
+ /*
+ * Some SoCs like A7k/A8k need to enable manually the NAND
+ * controller, gated clocks and reset bits to avoid being bootloader
+ * dependent. This is done through the use of the System Functions
+ * registers.
+ */
+ if (nfc->caps->need_system_controller) {
+ struct regmap *sysctrl_base = syscon_regmap_lookup_by_phandle(
+ np, "marvell,system-controller");
+ u32 reg;
+
+ if (IS_ERR(sysctrl_base))
+ return PTR_ERR(sysctrl_base);
+
+ reg = GENCONF_SOC_DEVICE_MUX_NFC_EN |
+ GENCONF_SOC_DEVICE_MUX_ECC_CLK_RST |
+ GENCONF_SOC_DEVICE_MUX_ECC_CORE_RST |
+ GENCONF_SOC_DEVICE_MUX_NFC_INT_EN;
+ regmap_write(sysctrl_base, GENCONF_SOC_DEVICE_MUX, reg);
+
+ regmap_read(sysctrl_base, GENCONF_CLK_GATING_CTRL, ®);
+ reg |= GENCONF_CLK_GATING_CTRL_ND_GATE;
+ regmap_write(sysctrl_base, GENCONF_CLK_GATING_CTRL, reg);
+
+ regmap_read(sysctrl_base, GENCONF_ND_CLK_CTRL, ®);
+ reg |= GENCONF_ND_CLK_CTRL_EN;
+ regmap_write(sysctrl_base, GENCONF_ND_CLK_CTRL, reg);
+ }
+
+ /* Configure the DMA if appropriate */
+ if (!nfc->caps->is_nfcv2)
+ marvell_nfc_init_dma(nfc);
+
+ /*
+ * ECC operations and interruptions are only enabled when specifically
+ * needed. ECC shall not be activated in the early stages (fails probe).
+ * Arbiter flag, even if marked as "reserved", must be set (empirical).
+ */
+ writel_relaxed(NDCR_RA_START | NDCR_ALL_INT | NDCR_ND_ARB_EN |
+ (nfc->caps->is_nfcv2 ?
+ 0 : NDCR_RD_ID_CNT(NFCV1_READID_LEN)),
+ nfc->regs + NDCR);
+ writel_relaxed(0xFFFFFFFF, nfc->regs + NDSR);
+ writel_relaxed(0, nfc->regs + NDECCCTRL);
+
+ return 0;
+}
+
+static int marvell_nfc_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct resource *r;
+ struct marvell_nfc *nfc;
+ int ret;
+ int irq;
+
+ nfc = devm_kzalloc(&pdev->dev, sizeof(struct marvell_nfc),
+ GFP_KERNEL);
+ if (!nfc)
+ return -ENOMEM;
+
+ nfc->dev = dev;
+ nand_hw_control_init(&nfc->controller);
+ INIT_LIST_HEAD(&nfc->chips);
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ nfc->regs = devm_ioremap_resource(dev, r);
+ if (IS_ERR(nfc->regs))
+ return PTR_ERR(nfc->regs);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(dev, "failed to retrieve irq\n");
+ return irq;
+ }
+
+ nfc->ecc_clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(nfc->ecc_clk))
+ return PTR_ERR(nfc->ecc_clk);
+
+ ret = clk_prepare_enable(nfc->ecc_clk);
+ if (ret)
+ return ret;
+
+ marvell_nfc_disable_int(nfc, NDCR_ALL_INT);
+ marvell_nfc_clear_int(nfc, NDCR_ALL_INT);
+ ret = devm_request_irq(dev, irq, marvell_nfc_isr,
+ 0, "marvell-nfc", nfc);
+ if (ret)
+ goto unprepare_clk;
+
+ /* Get NAND controller capabilities */
+ if (pdev->id_entry)
+ nfc->caps = (void *)pdev->id_entry->driver_data;
+ else
+ nfc->caps = of_device_get_match_data(&pdev->dev);
+
+ if (!nfc->caps) {
+ dev_err(dev, "Could not retrieve NFC caps\n");
+ ret = -EINVAL;
+ goto unprepare_clk;
+ }
+
+ /* Init the controller and then probe the chips */
+ ret = marvell_nfc_init(nfc);
+ if (ret)
+ goto unprepare_clk;
+
+ platform_set_drvdata(pdev, nfc);
+
+ ret = marvell_nand_chips_init(dev, nfc);
+ if (ret)
+ goto unprepare_clk;
+
+ return 0;
+
+unprepare_clk:
+ clk_disable_unprepare(nfc->ecc_clk);
+
+ return ret;
+}
+
+static int marvell_nfc_remove(struct platform_device *pdev)
+{
+ struct marvell_nfc *nfc = platform_get_drvdata(pdev);
+
+ marvell_nand_chips_cleanup(nfc);
+
+ if (nfc->use_dma) {
+ dmaengine_terminate_all(nfc->dma_chan);
+ dma_release_channel(nfc->dma_chan);
+ }
+
+ clk_disable_unprepare(nfc->ecc_clk);
+
+ return 0;
+}
+
+static const struct marvell_nfc_caps marvell_armada_8k_nfc_caps = {
+ .max_cs_nb = 4,
+ .max_rb_nb = 2,
+ .need_system_controller = true,
+ .is_nfcv2 = true,
+};
+
+static const struct marvell_nfc_caps marvell_armada370_nfc_caps = {
+ .max_cs_nb = 4,
+ .max_rb_nb = 2,
+ .is_nfcv2 = true,
+};
+
+static const struct marvell_nfc_caps marvell_pxa3xx_nfc_caps = {
+ .max_cs_nb = 2,
+ .max_rb_nb = 1,
+ .use_dma = true,
+};
+
+static const struct marvell_nfc_caps marvell_armada_8k_nfc_legacy_caps = {
+ .max_cs_nb = 4,
+ .max_rb_nb = 2,
+ .need_system_controller = true,
+ .legacy_of_bindings = true,
+ .is_nfcv2 = true,
+};
+
+static const struct marvell_nfc_caps marvell_armada370_nfc_legacy_caps = {
+ .max_cs_nb = 4,
+ .max_rb_nb = 2,
+ .legacy_of_bindings = true,
+};
+
+static const struct marvell_nfc_caps marvell_pxa3xx_nfc_legacy_caps = {
+ .max_cs_nb = 2,
+ .max_rb_nb = 1,
+ .legacy_of_bindings = true,
+};
+
+static const struct platform_device_id marvell_nfc_platform_ids[] = {
+ {
+ .name = "pxa3xx-nand",
+ .driver_data = (kernel_ulong_t)&marvell_pxa3xx_nfc_legacy_caps,
+ },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(platform, marvell_nfc_platform_ids);
+
+static const struct of_device_id marvell_nfc_of_ids[] = {
+ {
+ .compatible = "marvell,armada-8k-nand-controller",
+ .data = &marvell_armada_8k_nfc_caps,
+ },
+ {
+ .compatible = "marvell,armada370-nand-controller",
+ .data = &marvell_armada370_nfc_caps,
+ },
+ {
+ .compatible = "marvell,pxa3xx-nand-controller",
+ .data = &marvell_pxa3xx_nfc_caps,
+ },
+ /* Support for old/deprecated bindings: */
+ {
+ .compatible = "marvell,armada-8k-nand",
+ .data = &marvell_armada_8k_nfc_legacy_caps,
+ },
+ {
+ .compatible = "marvell,armada370-nand",
+ .data = &marvell_armada370_nfc_legacy_caps,
+ },
+ {
+ .compatible = "marvell,pxa3xx-nand",
+ .data = &marvell_pxa3xx_nfc_legacy_caps,
+ },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, marvell_nfc_of_ids);
+
+static struct platform_driver marvell_nfc_driver = {
+ .driver = {
+ .name = "marvell-nfc",
+ .of_match_table = marvell_nfc_of_ids,
+ },
+ .id_table = marvell_nfc_platform_ids,
+ .probe = marvell_nfc_probe,
+ .remove = marvell_nfc_remove,
+};
+module_platform_driver(marvell_nfc_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Marvell NAND controller driver");
--
2.11.0
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^ permalink raw reply related
* [PATCH 01/12] dt-bindings: mtd: add Marvell NAND controller documentation
From: Miquel Raynal @ 2017-12-07 20:18 UTC (permalink / raw)
To: David Woodhouse, Brian Norris, Boris Brezillon, Marek Vasut,
Richard Weinberger, Cyrille Pitchen, Rob Herring, Mark Rutland,
Jason Cooper, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth,
Russell King, Daniel Mack, Haojian Zhuang, Robert Jarzmik,
Eric Miao, Catalin Marinas
Cc: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Thomas Petazzoni, Antoine Tenart, Nadav Haklai, Miquel Raynal,
Ofer Heifetz, Hanna Hawa, Neta Zur Hershkovits
In-Reply-To: <20171207201814.30411-1-miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Document the legacy and the new bindings for Marvell NAND controller.
The pxa3xx_nand.c driver does only support legacy bindings, which are
incomplete and inaccurate. A rework of this controller (called
marvell_nand.c) does support both.
Signed-off-by: Miquel Raynal <miquel.raynal-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
---
.../devicetree/bindings/mtd/marvell-nand.txt | 84 ++++++++++++++++++++++
1 file changed, 84 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mtd/marvell-nand.txt
diff --git a/Documentation/devicetree/bindings/mtd/marvell-nand.txt b/Documentation/devicetree/bindings/mtd/marvell-nand.txt
new file mode 100644
index 000000000000..0b3d5e0bab83
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/marvell-nand.txt
@@ -0,0 +1,84 @@
+Marvell NAND Flash Controller (NFC)
+
+Required properties:
+- compatible: can be one of the following:
+ * "marvell,armada-8k-nand-controller"
+ * "marvell,armada370-nand-controller"
+ * "marvell,pxa3xx-nand-controller"
+ * "marvell,armada-8k-nand" (deprecated)
+ * "marvell,armada370-nand" (deprecated)
+ * "marvell,pxa3xx-nand" (deprecated)
+- reg: NAND flash controller memory area.
+- #address-cells: shall be set to 1. Encode the NAND CS.
+- #size-cells: shall be set to 0.
+- interrupts: shall define the NAND controller interrupt.
+- clocks: shall reference the NAND controller clock.
+- marvell,system-controller: Set to retrieve the syscon node that handles
+ NAND controller related registers (only required with the
+ "marvell,armada-8k-nand[-controller]" compatibles).
+
+Optional properties:
+- label: see partition.txt. New platforms shall omit this property.
+- dmas: shall reference DMA channel associated to the NAND controller.
+- dma-names: shall be "rxtx".
+
+Optional children nodes:
+Children nodes represent the available NAND chips.
+
+Required properties:
+- reg: shall contain the native Chip Select ids (0-3)
+- marvell,rb: shall contain the native Ready/Busy ids (0-1)
+
+Optional properties:
+- marvell,nand-keep-config: orders the driver not to take the timings
+ from the core and leaving them completely untouched. Bootloader
+ timings will then be used.
+- nand-on-flash-bbt: see nand.txt.
+- nand-ecc-mode: see nand.txt. Will use hardware ECC if not specified.
+- nand-ecc-algo: see nand.txt. This property may be added when using
+ hardware ECC for clarification but will be ignored by the driver
+ because ECC mode is chosen depending on the page size and the strength
+ required by the NAND chip. This value may be overwritten with
+ nand-ecc-strength property.
+- nand-ecc-strength: see nand.txt.
+- nand-ecc-step-size: see nand.txt. This has no effect and will be
+ ignored by the driver when using hardware ECC because Marvell's NAND
+ flash controller does use fixed strength (1-bit for Hamming, 16-bit
+ for BCH), so the step size will shrink or grow in order to fit the
+ required strength. Step sizes are not completely random for all and
+ follow certain patterns described in AN-379, "Marvell SoC NFC ECC".
+
+See Documentation/devicetree/bindings/mtd/nand.txt for more details on
+generic bindings.
+
+
+Example:
+nand_controller: nand-controller@d0000 {
+ compatible = "marvell,armada370-nand-controller";
+ reg = <0xd0000 0x54>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&coredivclk 0>;
+
+ nand@0 {
+ reg = <0>;
+ marvell,rb = <0>;
+ nand-ecc-mode = "hw";
+ marvell,nand-keep-config;
+ nand-on-flash-bbt;
+ nand-ecc-strength = <4>;
+ nand-ecc-step-size = <512>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "Rootfs";
+ reg = <0x00000000 0x40000000>;
+ };
+ };
+ };
+};
--
2.11.0
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^ permalink raw reply related
* [PATCH 00/12] Marvell NAND controller rework with ->exec_op()
From: Miquel Raynal @ 2017-12-07 20:18 UTC (permalink / raw)
To: David Woodhouse, Brian Norris, Boris Brezillon, Marek Vasut,
Richard Weinberger, Cyrille Pitchen, Rob Herring, Mark Rutland,
Jason Cooper, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth,
Russell King, Daniel Mack, Haojian Zhuang, Robert Jarzmik,
Eric Miao, Catalin Marinas
Cc: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Thomas Petazzoni, Antoine Tenart, Nadav Haklai, Miquel Raynal,
Ofer Heifetz, Hanna Hawa, Neta Zur Hershkovits
Hi,
After the addition of the NAND framework ->exec_op() interface (see [1]
for the series preparing it and [2] for the last version of the
core-side implementation of ->exec_op() itself), this series replaces
the current Marvell NAND controller driver pxa3xx_nand.c with a rework
called marvell_nand.c.
Aside the fact that it drops the big state machine, improves the overall
speed and implements raw accesses, it is the first driver-side
implementation of the ->exec_op() interface and may be used as reference
for latter reworks of the same type.
One may find more detail about why a completely new driver is needed in
the commit log of:
"mtd: nand: add reworked Marvell NAND controller driver"
The series also changes the device tree NAND node definition for all
platforms referring to the Marvell driver to use the new bindings. They
are more hierarchical and fit the real organization of the hardware, by
having NAND partitions that are part of NAND chip nodes, themselves part
of the NAND controller node.
These changes have been tested on:
- PXA3xx platform with a CM-X300 board (2kiB page NAND, 1b/512B
strength, Hamming ECC engine) [32 bits]
- Armada 385 DB AP (4kiB page NAND, 4b/512B, BCH ECC engine) [32 bits]
- Armada 398 DB (4kiB page NAND, 8b/512B, BCH ECC engine using a layout
with a last chunk different than the others) [32 bits]
- Armada 7040 DB and Armada 8040 DB (4kiB page NAND, 4b/512B, BCH ECC
engine) [64 bits]
Robert, it would be great if you could also do more testing on PXA and
validate this driver. If needed, a branch ready to be tested is
available at [3]. It is based on nand/next and has all the changes
brought by the previously mentionned series as well as this one.
Thank you,
Miquèl
[1] https://www.spinics.net/lists/arm-kernel/msg619633.html
[2] http://lists.infradead.org/pipermail/linux-mtd/2017-December/077965.html
[3] https://github.com/miquelraynal/linux/tree/marvell/nand-next/nfc-rework
Miquel Raynal (12):
dt-bindings: mtd: add Marvell NAND controller documentation
mtd: nand: add reworked Marvell NAND controller driver
mtd: nand: replace pxa3xx_nand driver by its rework called
marvell_nand
dt-bindings: mtd: remove pxa3xx NAND controller documentation
mtd: nand: remove useless fields from pxa3xx NAND platform data
ARM: dts: armada-370-xp: use reworked NAND controller driver
ARM: dts: armada-375: use reworked NAND controller driver
ARM: dts: armada-38x: use reworked NAND controller driver
ARM: dts: armada-39x: use reworked NAND controller driver
ARM: dts: pxa: use reworked NAND controller driver
ARM64: dts: marvell: use reworked NAND controller driver on Armada 7K
ARM64: dts: marvell: use reworked NAND controller driver on Armada 8K
.../devicetree/bindings/mtd/marvell-nand.txt | 84 +
.../devicetree/bindings/mtd/pxa3xx-nand.txt | 50 -
arch/arm/boot/dts/armada-370-db.dts | 57 +-
arch/arm/boot/dts/armada-370-dlink-dns327l.dts | 120 +-
arch/arm/boot/dts/armada-370-mirabox.dts | 51 +-
arch/arm/boot/dts/armada-370-netgear-rn102.dts | 90 +-
arch/arm/boot/dts/armada-370-netgear-rn104.dts | 90 +-
arch/arm/boot/dts/armada-370-rd.dts | 52 +-
arch/arm/boot/dts/armada-370-seagate-nas-xbay.dtsi | 64 +-
arch/arm/boot/dts/armada-370-xp.dtsi | 6 +-
arch/arm/boot/dts/armada-375-db.dts | 50 +-
arch/arm/boot/dts/armada-375.dtsi | 6 +-
arch/arm/boot/dts/armada-385-db-ap.dts | 69 +-
arch/arm/boot/dts/armada-385-linksys-caiman.dts | 129 +-
arch/arm/boot/dts/armada-385-linksys-cobra.dts | 129 +-
arch/arm/boot/dts/armada-385-linksys-rango.dts | 141 +-
arch/arm/boot/dts/armada-385-linksys-shelby.dts | 129 +-
arch/arm/boot/dts/armada-385-linksys.dtsi | 16 +-
arch/arm/boot/dts/armada-388-db.dts | 55 +-
arch/arm/boot/dts/armada-38x.dtsi | 6 +-
arch/arm/boot/dts/armada-390-db.dts | 66 +-
arch/arm/boot/dts/armada-395-gp.dts | 74 +-
arch/arm/boot/dts/armada-398-db.dts | 60 +-
arch/arm/boot/dts/armada-39x.dtsi | 6 +-
arch/arm/boot/dts/armada-xp-db-dxbc2.dts | 2 +-
arch/arm/boot/dts/armada-xp-db-xc3-24g4xg.dts | 2 +-
arch/arm/boot/dts/armada-xp-db.dts | 2 +-
arch/arm/boot/dts/armada-xp-gp.dts | 2 +-
arch/arm/boot/dts/armada-xp-lenovo-ix4-300d.dts | 2 +-
arch/arm/boot/dts/armada-xp-linksys-mamba.dts | 156 +-
arch/arm/boot/dts/armada-xp-netgear-rn2120.dts | 90 +-
arch/arm/boot/dts/pxa3xx.dtsi | 6 +-
arch/arm/configs/cm_x300_defconfig | 2 +-
arch/arm/configs/mvebu_v7_defconfig | 2 +-
arch/arm/configs/pxa3xx_defconfig | 3 +-
arch/arm/configs/pxa_defconfig | 2 +-
arch/arm/configs/raumfeld_defconfig | 2 +-
arch/arm/mach-mmp/ttc_dkb.c | 4 +-
arch/arm/mach-pxa/cm-x300.c | 8 +-
arch/arm/mach-pxa/colibri-pxa3xx.c | 8 +-
arch/arm/mach-pxa/colibri.h | 2 +-
arch/arm/mach-pxa/littleton.c | 10 +-
arch/arm/mach-pxa/mxm8x10.c | 10 +-
arch/arm/mach-pxa/raumfeld.c | 6 +-
arch/arm/mach-pxa/zylonite.c | 10 +-
arch/arm64/boot/dts/marvell/armada-7040-db.dts | 52 +-
arch/arm64/boot/dts/marvell/armada-8040-db.dts | 46 +-
.../boot/dts/marvell/armada-cp110-master.dtsi | 8 +-
.../arm64/boot/dts/marvell/armada-cp110-slave.dtsi | 10 +-
drivers/mtd/nand/Kconfig | 12 +
drivers/mtd/nand/Makefile | 2 +-
drivers/mtd/nand/marvell_nand.c | 2950 ++++++++++++++++++++
drivers/mtd/nand/pxa3xx_nand.c | 2104 --------------
include/linux/platform_data/mtd-nand-pxa3xx.h | 43 +-
54 files changed, 4093 insertions(+), 3065 deletions(-)
create mode 100644 Documentation/devicetree/bindings/mtd/marvell-nand.txt
delete mode 100644 Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt
create mode 100644 drivers/mtd/nand/marvell_nand.c
delete mode 100644 drivers/mtd/nand/pxa3xx_nand.c
--
2.11.0
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^ permalink raw reply
* Re: [PATCH V6 3/7] device property: Introduce a common API to fetch device match data
From: Sinan Kaya @ 2017-12-07 20:17 UTC (permalink / raw)
To: Sakari Ailus
Cc: dmaengine, timur, devicetree, linux-acpi, linux-arm-msm,
linux-arm-kernel, Greg Kroah-Hartman, Rafael J. Wysocki,
Len Brown, Mika Westerberg, Sakari Ailus, Dmitry Torokhov,
Rob Herring, Kieran Bingham, open list
In-Reply-To: <20171207124044.utyrn2mzzyml42b2@valkosipuli.retiisi.org.uk>
On 12/7/2017 7:40 AM, Sakari Ailus wrote:
> On Tue, Dec 05, 2017 at 12:04:48PM -0500, Sinan Kaya wrote:
>> @@ -101,6 +103,8 @@ struct fwnode_operations {
>> (*graph_get_port_parent)(struct fwnode_handle *fwnode);
>> int (*graph_parse_endpoint)(const struct fwnode_handle *fwnode,
>> struct fwnode_endpoint *endpoint);
>> + void *(*get_match_data)(const struct fwnode_handle *fwnode,
>> + struct device *dev);
>
> You can make dev const, too.
>
done, I couldn't change device_get_match_data() parameter const due to
dev_fwnode() function.
from /local/mnt/workspace/projects/caf/kernel/drivers/base/property.c:13:
/local/mnt/workspace/projects/caf/kernel/drivers/base/property.c:1341:39: warning: passing argument 1 of 'dev_fwnode' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data,
--
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
^ permalink raw reply
* Re: [PATCH V6 3/7] device property: Introduce a common API to fetch device match data
From: Sinan Kaya @ 2017-12-07 20:15 UTC (permalink / raw)
To: Sakari Ailus
Cc: dmaengine, timur, devicetree, linux-acpi, linux-arm-msm,
linux-arm-kernel, Greg Kroah-Hartman, Rafael J. Wysocki,
Len Brown, Mika Westerberg, Sakari Ailus, Dmitry Torokhov,
Rob Herring, Kieran Bingham, open list
In-Reply-To: <20171207122948.yyl6adb6lnb56gok@valkosipuli.retiisi.org.uk>
On 12/7/2017 7:29 AM, Sakari Ailus wrote:
> Hi Sinan,
>
> Thanks for the update.
>
> Just one small comment below.
>
[snip]
>>
>> struct fwnode_handle {
>> struct fwnode_handle *secondary;
>> @@ -66,6 +67,7 @@ struct fwnode_reference_args {
>> * endpoint node.
>> * @graph_get_port_parent: Return the parent node of a port node.
>> * @graph_parse_endpoint: Parse endpoint for port and endpoint id.
>> + * @get_match_data: Return the driver match data.
>
> Could you arrange the new get_match_data op closer to the other ops that
> don't deal with the graphs? Such as device_is_available. As the ops are
> dealing generally with fwnodes, I might call this device_get_match_data to
> explicitly mention it's for devices.
done
>
>> */
>> struct fwnode_operations {
>> void (*get)(struct fwnode_handle *fwnode);
>> @@ -101,6 +103,8 @@ struct fwnode_operations {
>> (*graph_get_port_parent)(struct fwnode_handle *fwnode);
>> int (*graph_parse_endpoint)(const struct fwnode_handle *fwnode,
>> struct fwnode_endpoint *endpoint);
>> + void *(*get_match_data)(const struct fwnode_handle *fwnode,
>> + struct device *dev);
>
> Same comment about the order here.
ok
>
>> };
>>
>> #define fwnode_has_op(fwnode, op) \
>> diff --git a/include/linux/property.h b/include/linux/property.h
>> index 6bebee1..01fa55b 100644
>> --- a/include/linux/property.h
>> +++ b/include/linux/property.h
>> @@ -275,6 +275,8 @@ int device_add_properties(struct device *dev,
>>
>> enum dev_dma_attr device_get_dma_attr(struct device *dev);
>>
>> +void *device_get_match_data(struct device *dev);
>> +
>> int device_get_phy_mode(struct device *dev);
>>
>> void *device_get_mac_address(struct device *dev, char *addr, int alen);
>
--
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
^ permalink raw reply
* Re: [PATCH] ARM64: dts: amlogic: use generic bus node names
From: Kevin Hilman @ 2017-12-07 19:30 UTC (permalink / raw)
To: Neil Armstrong
Cc: linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA, Stephen Boyd,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r
In-Reply-To: <fb631d1c-2b12-34e4-c157-ba11242e68de-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
Neil Armstrong <narmstrong-rdvid1DuHRBWk0Htik3J/w@public.gmane.org> writes:
> On 06/12/2017 20:30, Kevin Hilman wrote:
>> The DT spec recommends that node-names have generic names like "bus".
>> Fix that in the Amlogic DTs, while leaving the label names to have more
>> SoC-specific names that match with the HW documentation.
>>
>> Suggested-by: Stephen Boyd <sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
>> Signed-off-by: Kevin Hilman <khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
>> ---
>> arch/arm64/boot/dts/amlogic/meson-axg.dtsi | 4 ++--
>> arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 6 +++---
>> 2 files changed, 5 insertions(+), 5 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
>> index b932a784b02a..e7213eb53958 100644
>> --- a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
>> +++ b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
>> @@ -113,7 +113,7 @@
>> #size-cells = <2>;
>> ranges;
>>
>> - cbus: cbus@ffd00000 {
>> + cbus: bus@ffd00000 {
>> compatible = "simple-bus";
>> reg = <0x0 0xffd00000 0x0 0x25000>;
>> #address-cells = <2>;
>> @@ -175,7 +175,7 @@
>> };
>> };
>>
>> - aobus: aobus@ff800000 {
>> + aobus: bus@ff800000 {
>> compatible = "simple-bus";
>> reg = <0x0 0xff800000 0x0 0x100000>;
>> #address-cells = <2>;
>> diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
>> index 7cdbf58a062f..6cb3c2a52baf 100644
>> --- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
>> +++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
>> @@ -211,7 +211,7 @@
>> #size-cells = <2>;
>> ranges;
>>
>> - cbus: cbus@c1100000 {
>> + cbus: bus@c1100000 {
>> compatible = "simple-bus";
>> reg = <0x0 0xc1100000 0x0 0x100000>;
>> #address-cells = <2>;
>> @@ -366,7 +366,7 @@
>> };
>> };
>>
>> - aobus: aobus@c8100000 {
>> + aobus: bus@c8100000 {
>> compatible = "simple-bus";
>> reg = <0x0 0xc8100000 0x0 0x100000>;
>> #address-cells = <2>;
>> @@ -453,7 +453,7 @@
>> };
>> };
>>
>> - hiubus: hiubus@c883c000 {
>> + hiubus: bus@c883c000 {
>> compatible = "simple-bus";
>> reg = <0x0 0xc883c000 0x0 0x2000>;
>> #address-cells = <2>;
>>
>
> Reviewed-by: Neil Armstrong <narmstrong-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
Applied to v4.16/dt64 with Neil's review and after doing some basic
build/boot tests.
Thanks,
Kevin
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^ permalink raw reply
* [PATCH v6 2/2] dt-bindings: add eeprom "no-read-rollover" property
From: Sven Van Asbroeck @ 2017-12-07 19:26 UTC (permalink / raw)
To: svendev, robh+dt, mark.rutland, wsa, brgl, nsekhar, sakari.ailus,
david, javier, divagar.mohandass
Cc: devicetree, linux-kernel, linux-i2c
In-Reply-To: <1512674779-10349-1-git-send-email-svendev@arcx.com>
Adds an optional property for at24 eeproms.
This parameterless property indicates that the multi-address eeprom
does not automatically roll over reads to the next slave address.
Signed-off-by: Sven Van Asbroeck <svendev@arcx.com>
---
Documentation/devicetree/bindings/eeprom/eeprom.txt | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/eeprom/eeprom.txt b/Documentation/devicetree/bindings/eeprom/eeprom.txt
index 27f2bc1..5bfc0ac 100644
--- a/Documentation/devicetree/bindings/eeprom/eeprom.txt
+++ b/Documentation/devicetree/bindings/eeprom/eeprom.txt
@@ -38,6 +38,11 @@ Optional properties:
- size: total eeprom size in bytes
+ - no-read-rollover:
+ This parameterless property indicates that the multi-address
+ eeprom does not automatically roll over reads to the next
+ slave address. Please consult the manual of your device.
+
Example:
eeprom@52 {
--
1.9.1
^ permalink raw reply related
* [PATCH v6 1/2] at24: support eeproms that do not auto-rollover reads.
From: Sven Van Asbroeck @ 2017-12-07 19:26 UTC (permalink / raw)
To: svendev, robh+dt, mark.rutland, wsa, brgl, nsekhar, sakari.ailus,
david, javier, divagar.mohandass
Cc: devicetree, linux-kernel, linux-i2c
In-Reply-To: <1512674779-10349-1-git-send-email-svendev@arcx.com>
Some multi-address eeproms in the at24 family may not automatically
roll-over reads to the next slave address. On those eeproms, reads
that straddle slave boundaries will not work correctly.
Solution:
Mark such eeproms with a flag that prevents reads straddling
slave boundaries. Add the AT24_FLAG_NO_RDROL flag to the eeprom
entry in the device_id table, or add 'no-read-rollover' to the
eeprom devicetree entry.
Note that I have not personally enountered an at24 chip that
does not support read rollovers. They may or may not exist.
However, my hardware requires this functionality because of
a quirk.
It's up to the Linux community to decide if this patch is useful/
general enough to warrant merging.
Signed-off-by: Sven Van Asbroeck <svendev@arcx.com>
---
drivers/misc/eeprom/at24.c | 39 ++++++++++++++++++++++++++------------
include/linux/platform_data/at24.h | 2 ++
2 files changed, 29 insertions(+), 12 deletions(-)
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index 625b001..06ffa11 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -251,15 +251,6 @@ struct at24_data {
* Slave address and byte offset derive from the offset. Always
* set the byte address; on a multi-master board, another master
* may have changed the chip's "current" address pointer.
- *
- * REVISIT some multi-address chips don't rollover page reads to
- * the next slave address, so we may need to truncate the count.
- * Those chips might need another quirk flag.
- *
- * If the real hardware used four adjacent 24c02 chips and that
- * were misconfigured as one 24c08, that would be a similar effect:
- * one "eeprom" file not four, but larger reads would fail when
- * they crossed certain pages.
*/
static struct at24_client *at24_translate_offset(struct at24_data *at24,
unsigned int *offset)
@@ -277,6 +268,30 @@ static struct at24_client *at24_translate_offset(struct at24_data *at24,
return &at24->client[i];
}
+static size_t at24_adjust_read_count(struct at24_data *at24,
+ unsigned int offset, size_t count)
+{
+ unsigned int bits;
+ size_t remainder;
+
+ /*
+ * In case of multi-address chips that don't rollover reads to
+ * the next slave address: truncate the count to the slave boundary,
+ * so that the read never straddles slaves.
+ */
+ if (at24->chip.flags & AT24_FLAG_NO_RDROL) {
+ bits = (at24->chip.flags & AT24_FLAG_ADDR16) ? 16 : 8;
+ remainder = BIT(bits) - offset;
+ if (count > remainder)
+ count = remainder;
+ }
+
+ if (count > io_limit)
+ count = io_limit;
+
+ return count;
+}
+
static ssize_t at24_regmap_read(struct at24_data *at24, char *buf,
unsigned int offset, size_t count)
{
@@ -289,9 +304,7 @@ static ssize_t at24_regmap_read(struct at24_data *at24, char *buf,
at24_client = at24_translate_offset(at24, &offset);
regmap = at24_client->regmap;
client = at24_client->client;
-
- if (count > io_limit)
- count = io_limit;
+ count = at24_adjust_read_count(at24, offset, count);
/* adjust offset for mac and serial read ops */
offset += at24->offset_adj;
@@ -457,6 +470,8 @@ static void at24_get_pdata(struct device *dev, struct at24_platform_data *chip)
if (device_property_present(dev, "read-only"))
chip->flags |= AT24_FLAG_READONLY;
+ if (device_property_present(dev, "no-read-rollover"))
+ chip->flags |= AT24_FLAG_NO_RDROL;
err = device_property_read_u32(dev, "size", &val);
if (!err)
diff --git a/include/linux/platform_data/at24.h b/include/linux/platform_data/at24.h
index 271a4e2..841bb28 100644
--- a/include/linux/platform_data/at24.h
+++ b/include/linux/platform_data/at24.h
@@ -50,6 +50,8 @@ struct at24_platform_data {
#define AT24_FLAG_TAKE8ADDR BIT(4) /* take always 8 addresses (24c00) */
#define AT24_FLAG_SERIAL BIT(3) /* factory-programmed serial number */
#define AT24_FLAG_MAC BIT(2) /* factory-programmed mac address */
+#define AT24_FLAG_NO_RDROL BIT(1) /* does not auto-rollover reads to */
+ /* the next slave address */
void (*setup)(struct nvmem_device *nvmem, void *context);
void *context;
--
1.9.1
^ permalink raw reply related
* [PATCH v6 0/2] at24: support eeproms that do not auto-rollover reads.
From: Sven Van Asbroeck @ 2017-12-07 19:26 UTC (permalink / raw)
To: svendev, robh+dt, mark.rutland, wsa, brgl, nsekhar, sakari.ailus,
david, javier, divagar.mohandass
Cc: devicetree, linux-kernel, linux-i2c
v6:
added newlines, asked by Bartosz
no need for braces around ternary operator's condition:
bits = (at24->chip.flags & AT24_FLAG_ADDR16) ? 16 : 8;
but keep the braces anyway, as asked by Uwe Klein-Koenig
v5:
at Rob Herring's request, renamed devicetree property:
at24,no-read-rollover -> no-read-rollover
v4:
renamed devicetree property:
no-read-rollover -> at24,no-read-rollover
dt-bindings update now a separate patch
v3:
rebased against at24 maintainer's devel staging branch:
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux.git at24/devel
clarified some of the comments and wording
v2:
kbuild test robot feedback: correct
"warning: comparison of distinct pointer types lacks a cast"
build warning on some compilers / architectures.
v1:
original patch
Sven Van Asbroeck (2):
at24: support eeproms that do not auto-rollover reads.
dt-bindings: add eeprom "at24,no-read-rollover" property
.../devicetree/bindings/eeprom/eeprom.txt | 5 +++
drivers/misc/eeprom/at24.c | 37 +++++++++++++++-------
include/linux/platform_data/at24.h | 2 ++
3 files changed, 32 insertions(+), 12 deletions(-)
--
1.9.1
^ permalink raw reply
* Re: [RFC 0/2] of: Add whitelist
From: Alan Tull @ 2017-12-07 19:22 UTC (permalink / raw)
To: Frank Rowand
Cc: Rob Herring, Pantelis Antoniou, Moritz Fischer,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-fpga
In-Reply-To: <a0118440-f7b6-25cc-34b8-7787f1ca5097@gmail.com>
On Wed, Dec 6, 2017 at 5:56 AM, Frank Rowand <frowand.list@gmail.com> wrote:
> On 12/05/17 11:33, Alan Tull wrote:
>> On Thu, Nov 30, 2017 at 6:46 AM, Frank Rowand <frowand.list@gmail.com> wrote:
>>> On 11/29/17 11:11, Alan Tull wrote:
>>>> On Wed, Nov 29, 2017 at 7:31 AM, Rob Herring <robh+dt@kernel.org> wrote:
>>>>> On Wed, Nov 29, 2017 at 3:20 AM, Frank Rowand <frowand.list@gmail.com> wrote:
>>>>>> On 11/27/17 15:58, Alan Tull wrote:
>>>>>>> Here's a proposal for a whitelist to lock down the dynamic device tree.
>>>>>>>
>>>>>>> For an overlay to be accepted, all of its targets are required to be
>>>>>>> on a target node whitelist.
>>>>>>>
>>>>>>> Currently the only way I have to get on the whitelist is calling a
>>>>>>> function to add a node. That works for fpga regions, but I think
>>>>>>> other uses will need a way of having adding specific nodes from the
>>>>>>> base device tree, such as by adding a property like 'allow-overlay;'
>>>>>>> or 'allow-overlay = "okay";' If that is acceptable, I could use some
>>>>>>> advice on where that particular code should go.
>>>>>>>
>>>>>>> Alan
>>>>>>>
>>>>>>> Alan Tull (2):
>>>>>>> of: overlay: add whitelist
>>>>>>> fpga: of region: add of-fpga-region to whitelist
>>>>>>>
>>>>>>> drivers/fpga/of-fpga-region.c | 9 ++++++
>>>>>>> drivers/of/overlay.c | 73 +++++++++++++++++++++++++++++++++++++++++++
>>>>>>> include/linux/of.h | 12 +++++++
>>>>>>> 3 files changed, 94 insertions(+)
>>>>>>>
>>>>>>
>>>>>> The plan was to use connectors to restrict where an overlay could be applied.
>>>>>> I would prefer not to have multiple methods for accomplishing the same thing
>>>>>> unless there is a compelling reason to do so.
>>>>>
>>>>> Connector nodes need a mechanism to enable themselves, too. I don't
>>>>> think connector nodes are going to solve every usecase.
>>>>>
>>>>> Rob
>>>>
>>>> The two methods I'm suggesting are intended to handle different cases.
>>>> There will exist some drivers that by their nature will want every
>>>> instance to be enabled for overlays, such as fpga regions. The other
>>>> case is where drivers could support overlays but that's not the
>>>> widespread use for them. So no need to enable every instance of that
>>>> driver for overlays.
>>>
>>> I understand what the paragraph, to this point, means. But I had to
>>> read it several times to understand it because the way the concept is
>>> phrased clashed with my mental model.
>>
>> Hi Frank,
>>
>> I see where my explanation is confusing things. I was talking about
>> two methods for marking a node as being a valid target for an overlay
>> (use a function or add a DT property). I'll drop the idea of using a
>> DT property to enable a node for overlays and only focus on my
>> proposal of a function to enable nodes.
>>
>>>
>>> The device node is not an instance of a driver, which is why I was
>>> getting confused. (Yes, I do understand that the paragraph is talking
>>> about multiple device nodes that are bound to the same driver, but
>>> my mental model is tied to the device node, not to the driver.)
>>>
>>> If each of the device nodes in question is a connector, then each of
>>> the nodes will bind to a connector driver, based on the value of the
>>> compatible property. (This is of course a theoretical assumption on
>>> my part since the connectors are not yet implemented.)
>>>
>>> If the connector node is an fpga, or an fpga region (I may be getting
>>> my terminology wrong here - please correct as needed) then an fpga
>>> overlay could be applied to the node.
>>
>> We're still pre-connector currently, but yes I want to mark FPGA
>> regions as being valid targets. Then I can use Pantelis' configfs
>> interface to apply overlays while leaving the rest of the DT locked
>> down. That's the FPGA use of this patch in the pre-connector era of
>> things.
>>
>>>
>>> If I understand what you are saying, there will be some fpga connector
>>> nodes for which the usage at a given moment might be programmed to
>>> function in a manner that will not be described by an overlay, but
>>> at a different moment in time may be programmed in a way that needs
>>> to be described by an overlay. So there may be some times that it
>>> is valid to apply an overlay to the connector node and times that
>>> it is not valid to apply an overlay to the connector node.
>>
>> I think connectors would likely always be valid targets (but I could
>> be wrong) and other nodes would not be valid targets. The DT needs a
>> way to mark some nodes as valid targets, currently it doesn't have a
>> way of doing that. Every connector driver's probe could use this code
>> to mark itself as a valid target.
>>
>>>
>>> Is my understanding correct, or am I still confused?
>>
>> Hope that helps, sorry for the muddled explanation earlier.
>
> No need to be sorry, I always value what you have to say, and usually
> become more educated from reading what you write.
>
> We still seem to be talking at cross purposes. It seems that the model
> that you are describing is driver centric. My model is node centric.
>
> Once we figure out what the connector implementation and architecture
> are, it might be the case that each connector node has a driver bound
> to it, and that driver is able to tell the devicetree core code that
> the node that it is bound to is a valid place to apply an overlay.
>
> But I currently think that the core infrastructure code is what
> should recognize that a connector node is a valid place to apply
> an overlay. It _might_ even be the case the the connector
> architecture does not result in a driver being bound to the
> connector node.
>
> I would really prefer to get the connector architecture (and
> maybe also the implementation) before deciding how to handle
> the question of how to determine what nodes overlays can be
> appplied to.
Hi Frank,
I understand that you would want to wait until it is clear how
connectors will be implemented. So this method may work for
connectors or may not depending on how that all pans out. Thanks for
the discussion!
Alan
>
>
>>
>> Alan
>>
>>>
>>> -Frank
>>>
>>>> In that case the DT property provides some
>>>> granularity, only enabling overlays for specific instances of that
>>>> driver, leaving the rest of the DT locked down.>
>>>> If we only want one method, I would choose having the DT property only
>>>> and not exporting the functions. Users would have to add the property
>>>> for every FPGA region but that's not really painful. This would have
>>>> the benefit of still keeping the DT locked down unless someone
>>>> specifically wanted to enable some regions for overlays for their
>>>> particular use.
>>>>
>>>> Alan
>>>>
>>>
>>
>
^ permalink raw reply
* [PATCH v2 3/3] arm64: allwinner: a64: bananapi-m64: add usb otg
From: Jagan Teki @ 2017-12-07 19:04 UTC (permalink / raw)
To: Maxime Ripard
Cc: Chen-Yu Tsai, Icenowy Zheng, Rob Herring, Mark Rutland,
Catalin Marinas, Will Deacon, Michael Trimarchi,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw, Jagan Teki
In-Reply-To: <1512673460-7865-1-git-send-email-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
Add usb otg support for bananapi-m64 board,
- USB-ID connected with PH9
- USB-DRVVBUS controlled by N_VBUSEN pin from PMIC
Signed-off-by: Jagan Teki <jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
---
Changes for v2:
- add drvvbus regulator
- add N_VBUSEN pin
.../boot/dts/allwinner/sun50i-a64-bananapi-m64.dts | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
index 4a8d3f8..e4b2d8e 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
@@ -66,6 +66,10 @@
};
};
+&ehci0 {
+ status = "okay";
+};
+
&ehci1 {
status = "okay";
};
@@ -136,6 +140,10 @@
status = "okay";
};
+&ohci0 {
+ status = "okay";
+};
+
&ohci1 {
status = "okay";
};
@@ -148,6 +156,7 @@
reg = <0x3a3>;
interrupt-parent = <&r_intc>;
interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+ x-powers,drive-vbus-en; /* set N_VBUSEN as output pin */
};
};
@@ -243,6 +252,11 @@
regulator-name = "vdd-cpus";
};
+®_drivevbus {
+ regulator-name = "usb0-vbus";
+ status = "okay";
+};
+
®_rtc_ldo {
regulator-name = "vcc-rtc";
};
@@ -259,6 +273,13 @@
status = "okay";
};
+&usb_otg {
+ dr_mode = "otg";
+ status = "okay";
+};
+
&usbphy {
+ usb0_id_det-gpios = <&pio 7 9 GPIO_ACTIVE_HIGH>; /* PH9 */
+ usb0_vbus-supply = <®_drivevbus>;
status = "okay";
};
--
2.7.4
^ permalink raw reply related
* [PATCH v2 2/3] arm64: allwinner: axp803: Add drivevbus regulator
From: Jagan Teki @ 2017-12-07 19:04 UTC (permalink / raw)
To: Maxime Ripard
Cc: Chen-Yu Tsai, Icenowy Zheng, Rob Herring, Mark Rutland,
Catalin Marinas, Will Deacon, Michael Trimarchi,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw, Jagan Teki
In-Reply-To: <1512673460-7865-1-git-send-email-jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
Add reg_drivevbus regualtor for boards which are using
external regulator to drive the OTG VBus through N_VBUSEN
PMIC pin.
Signed-off-by: Jagan Teki <jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
---
Changes for v2:
- New patch
arch/arm64/boot/dts/allwinner/axp803.dtsi | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/axp803.dtsi b/arch/arm64/boot/dts/allwinner/axp803.dtsi
index ff8af52..e5eae8b 100644
--- a/arch/arm64/boot/dts/allwinner/axp803.dtsi
+++ b/arch/arm64/boot/dts/allwinner/axp803.dtsi
@@ -146,5 +146,10 @@
regulator-max-microvolt = <3000000>;
regulator-name = "rtc-ldo";
};
+
+ reg_drivevbus: drivevbus {
+ regulator-name = "drivevbus";
+ status = "disabled";
+ };
};
};
--
2.7.4
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^ permalink raw reply related
* [PATCH v2 1/3] regulator: axp20x: add drivevbus support for axp803
From: Jagan Teki @ 2017-12-07 19:04 UTC (permalink / raw)
To: Maxime Ripard
Cc: Chen-Yu Tsai, Icenowy Zheng, Rob Herring, Mark Rutland,
Catalin Marinas, Will Deacon, Michael Trimarchi, linux-arm-kernel,
devicetree, linux-kernel, linux-sunxi, Jagan Teki
Like axp221, axp223, axp813 the axp803 is also supporting external
regulator to drive the OTG VBus through N_VBUSEN PMIC pin.
Add support for it.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Changes for v2:
- New patch
Documentation/devicetree/bindings/mfd/axp20x.txt | 2 +-
drivers/regulator/axp20x-regulator.c | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/mfd/axp20x.txt b/Documentation/devicetree/bindings/mfd/axp20x.txt
index 9455503..34f24a2 100644
--- a/Documentation/devicetree/bindings/mfd/axp20x.txt
+++ b/Documentation/devicetree/bindings/mfd/axp20x.txt
@@ -43,7 +43,7 @@ Optional properties:
regulator to drive the OTG VBus, rather then
as an input pin which signals whether the
board is driving OTG VBus or not.
- (axp221 / axp223 / axp813 only)
+ (axp221 / axp223 / axp803/ axp813 only)
- x-powers,master-mode: Boolean (axp806 only). Set this when the PMIC is
wired for master mode. The default is slave mode.
diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
index 181622b..91b8ff8 100644
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -721,6 +721,8 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
case AXP803_ID:
regulators = axp803_regulators;
nregulators = AXP803_REG_ID_MAX;
+ drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
+ "x-powers,drive-vbus-en");
break;
case AXP806_ID:
regulators = axp806_regulators;
--
2.7.4
^ permalink raw reply related
* Re: [PATCH v5 1/2] at24: support eeproms that do not auto-rollover reads.
From: Uwe Kleine-König @ 2017-12-07 19:02 UTC (permalink / raw)
To: Bartosz Golaszewski
Cc: Sven Van Asbroeck, Rob Herring, Mark Rutland, Wolfram Sang,
nsekhar-l0cyMroinI0, Sakari Ailus, David Lechner,
Javier Martinez Canillas, Divagar Mohandass,
devicetree-u79uwXL29TY76Z2rM5mHXA, Linux Kernel Mailing List,
linux-i2c
In-Reply-To: <CAMRc=MdhJRD+G18Xh5vfmaHHdJ+g9EnDTxUHVxhzDzVt-D0KMg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
Hello,
On Thu, Dec 07, 2017 at 05:26:50PM +0100, Bartosz Golaszewski wrote:
> > + if (at24->chip.flags & AT24_FLAG_NO_RDROL) {
> > + bits = (at24->chip.flags & AT24_FLAG_ADDR16) ? 16 : 8;
>
> There's no need for braces around the ternary operator's condition.
Even if not required, I'd keep them for clearity.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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^ permalink raw reply
* [PATCH] ARM: dts: sun8i-h3: Remove allwinner,leds-active-low for non internal PHY
From: Corentin Labbe @ 2017-12-07 18:21 UTC (permalink / raw)
To: linux-I+IVW8TIWO2tmTQ+vhA3Yw, mark.rutland-5wv7dgnIgG8,
maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A, wens-jdAy2FN1RRM
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw, Corentin Labbe
allwinner,leds-active-low have effect only on boards which us the internal PHY.
So this patch remove it from all boards which do not use the internal PHY.
Signed-off-by: Corentin Labbe <clabbe.montjoie-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus.dts | 1 -
arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dts | 2 --
arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts | 1 -
3 files changed, 4 deletions(-)
diff --git a/arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus.dts b/arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus.dts
index f2292deaa590..f1c3f1cc4d97 100644
--- a/arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus.dts
+++ b/arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus.dts
@@ -119,7 +119,6 @@
phy-handle = <&ext_rgmii_phy>;
phy-mode = "rgmii";
- allwinner,leds-active-low;
status = "okay";
};
diff --git a/arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dts b/arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dts
index 0a8b79cf5954..b9ffa4d9c873 100644
--- a/arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dts
+++ b/arch/arm/boot/dts/sun8i-h3-nanopi-m1-plus.dts
@@ -83,8 +83,6 @@
phy-handle = <&ext_rgmii_phy>;
phy-mode = "rgmii";
- allwinner,leds-active-low;
-
status = "okay";
};
diff --git a/arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts b/arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts
index cbc499b04de4..b403e5d787cb 100644
--- a/arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts
+++ b/arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts
@@ -85,7 +85,6 @@
phy-handle = <&ext_rgmii_phy>;
phy-mode = "rgmii";
- allwinner,leds-active-low;
status = "okay";
};
--
2.13.6
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* [PATCH] ARM: dts: sunxi: add H3/H5 uart2 rts/cts bindings
From: Nuno Goncalves @ 2017-12-07 18:13 UTC (permalink / raw)
To: devicetree-u79uwXL29TY76Z2rM5mHXA; +Cc: Nuno Goncalves
Currently there are already bindings for uart1 and uart3 but uart2 was
lacking.
Signed-off-by: Nuno Goncalves <nunojpg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
arch/arm/boot/dts/sunxi-h3-h5.dtsi | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm/boot/dts/sunxi-h3-h5.dtsi b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
index 8d40c00d64bb..e0e0551b3f05 100644
--- a/arch/arm/boot/dts/sunxi-h3-h5.dtsi
+++ b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
@@ -377,6 +377,11 @@
function = "uart2";
};
+ uart2_rts_cts_pins: uart2_rts_cts {
+ pins = "PA2", "PA3";
+ function = "uart2";
+ };
+
uart3_pins: uart3 {
pins = "PA13", "PA14";
function = "uart3";
--
2.11.0
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^ permalink raw reply related
* Re: [PATCH v2 0/7] Add CPU Frequency scaling support on Armada 37xx
From: Gregory CLEMENT @ 2017-12-07 17:58 UTC (permalink / raw)
To: Rafael J. Wysocki
Cc: Viresh Kumar, linux-pm, Jason Cooper, Andrew Lunn,
Sebastian Hesselbarth, Rob Herring, devicetree, Thomas Petazzoni,
linux-arm-kernel, Antoine Tenart, Miquèl Raynal,
Nadav Haklai, Victor Gu, Marcin Wojtas, Wilson Ding, Hua Jing,
Neta Zur Hershkovits, Evan Wang, Andre Heider
In-Reply-To: <88999738.5axjmjKUcc@aspire.rjw.lan>
Hi Rafael,
On jeu., déc. 07 2017, "Rafael J. Wysocki" <rjw@rjwysocki.net> wrote:
> On Thursday, December 7, 2017 2:56:09 PM CET Gregory CLEMENT wrote:
>> Hi,
>>
>> This is the second version of a series adding the CPU Frequency
>> support on Armada 37xx using DVFS. It is based on the initial work of
>> Evan Wang and Victor Gu.
>>
>> The main change since the first version was a bug fixed in the
>> "cpufreq: Add DVFS support for Armada 37xx" patch which was preventing
>> to register the opp. An other noticeable change is the 4th patch which
>> is new adding the use of dev_pm_opp_remove and removing an comment
>> became wrong. The other changes are described in the change log.
>>
>> DVFS control is done by a set of registers from the North Bridge Power
>> Management block. The binding for this block is documented in patch 1.
>>
>> While adding a new cpufreq driver I found that the Kconfig and
>> Makefile were no more in order, so it is fixed by patch 2 and 3.
>>
>> The 5th patch is just about updating the MAINTAINERS file with the new
>> driver.
>>
>> The next patch is the real purpose of the series. The main goal of
>> this driver is to setup the CPU load level in the hardware to
>> associate them to CPU frequencies and register a standard cpufreq
>> driver. Note that the hardware also capable of doing AVS (Adaptive
>> Voltage Scaling), by associating a voltage on each level beside the
>> CPU frequency. However, this support is not yet ready, so it is not
>> part of this series.
>>
>> Finally, the last patch is for arm-soc the arm-soc subsystem through
>> mvebu and update the device tree to support the CPU frequency scaling.
>>
>> An update on the CPU clock driver is needed in order to take into
>> account the DVFS setting. It's the purpose of an other series already
>> sent, but is no dependencies between the series (for building or at
>> runtime).
>>
>> Thanks,
>>
>> Gregory
>>
>> Changelog:
>>
>> v1 -> v2:
>>
>> - using syscon instead of nb_pm for the binding of the North bridge
>> power management unit: reported by Rob Herring
>>
>> - fix sorting inside the big LITTLE section for the Kconfig: reported
>> by Viresh Kumar
>>
>> - fix the bogus freq calculation in armada37xx_cpufreq_driver_init,
>> bug reported by Andre Heider
>>
>> - use dev_pm_opp_remove() on the previous opp if dev_pm_opp_add()
>> failed, reported by Viresh Kumar
>>
>> - add the Tested-by flag from Andre Heider on "cpufreq: Add DVFS
>> support for Armada 37xx" patch
>>
>> Gregory CLEMENT (7):
>> dt-bindings: marvell: Add documentation for the North Bridge PM on
>> Armada 37xx
>> cpufreq: ARM: sort the Kconfig menu
>> cpufreq: sort the drivers in ARM part
>> cpufreq: mvebu: Use dev_pm_opp_remove()
>> MAINTAINERS: add new entries for Armada 37xx cpufreq driver
>> cpufreq: Add DVFS support for Armada 37xx
>> arm64: dts: marvell: armada-37xx: add nodes allowing cpufreq support
>>
>> .../bindings/arm/marvell/armada-37xx.txt | 19 ++
>> MAINTAINERS | 1 +
>> arch/arm64/boot/dts/marvell/armada-372x.dtsi | 1 +
>> arch/arm64/boot/dts/marvell/armada-37xx.dtsi | 7 +
>> drivers/cpufreq/Kconfig.arm | 89 ++++----
>> drivers/cpufreq/Makefile | 9 +-
>> drivers/cpufreq/armada-37xx-cpufreq.c | 241 +++++++++++++++++++++
>> drivers/cpufreq/mvebu-cpufreq.c | 11 +-
>> 8 files changed, 327 insertions(+), 51 deletions(-)
>> create mode 100644 drivers/cpufreq/armada-37xx-cpufreq.c
>
> I'd like you to split patches [2-3/7] off this series as they aren't
> exactly related to the other changes in it.
Actually the patch 6 depend on patch 2 and 3. To be more precise they
modify the same area inside the files drivers/cpufreq/Kconfig.arm and
drivers/cpufreq/Makefile.
So if I move them in an other series then there could be some merge
conflicts.
Gregory
>
> Thanks,
> Rafael
>
--
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
^ permalink raw reply
* Re: [PATCH V6 4/7] OF: properties: Implement get_match_data() callback
From: Sinan Kaya @ 2017-12-07 17:50 UTC (permalink / raw)
To: Lothar Waßmann
Cc: devicetree, linux-arm-msm, timur, open list, linux-acpi,
Rob Herring, dmaengine, Frank Rowand, linux-arm-kernel
In-Reply-To: <20171207162036.6a71a4f5@karo-electronics.de>
On 12/7/2017 10:20 AM, Lothar Waßmann wrote:
> Hi,
>
> On Thu, 7 Dec 2017 09:45:31 -0500 Sinan Kaya wrote:
>> On 12/7/2017 8:10 AM, Lothar Waßmann wrote:
>>>> +void *of_fwnode_get_match_data(const struct fwnode_handle *fwnode,
>>>> + struct device *dev)
>>> Shouldn't this be 'const void *of_fwnode_get_match_data
>>
>> OF keeps the driver data as a (const void*) internally. ACPI keeps the
>> driver data as kernel_ulong_t in struct acpi_device_id.
>>
>> I tried to find the middle ground here by converting output to void*
>> but not keeping const.
>>
> It should be no problem to cast a (const void *) to an unsigned long
> data type (without const qualifier).
>
It is the other way around. If I change this API to return a a (const void*),
the device_get_match_data() function need to return a (const void *).
While implementing the ACPI piece, I have to convert an unsigned long to
(const void *) in ACPI code so that the APIs are compatible.
>
> Lothar Waßmann
>
--
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
^ permalink raw reply
* Re: [PATCH v4.1] phylib: Add device reset GPIO support
From: Sergei Shtylyov @ 2017-12-07 17:40 UTC (permalink / raw)
To: Geert Uytterhoeven, David S . Miller, Andrew Lunn,
Florian Fainelli, Simon Horman, Magnus Damm
Cc: Rob Herring, Mark Rutland, Nicolas Ferre, Richard Leitner,
netdev-u79uwXL29TY76Z2rM5mHXA, devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA
In-Reply-To: <69fe9a6d-4039-6f80-b80d-7dc0de31e5bf-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
On 12/07/2017 08:20 PM, Sergei Shtylyov wrote:
>> The PHY devices sometimes do have their reset signal (maybe even power
>> supply?) tied to some GPIO and sometimes it also does happen that a boot
>> loader does not leave it deasserted. So far this issue has been attacked
>> from (as I believe) a wrong angle: by teaching the MAC driver to manipulate
>> the GPIO in question; that solution, when applied to the device trees, led
>> to adding the PHY reset GPIO properties to the MAC device node, with one
>> exception: Cadence MACB driver which could handle the "reset-gpios" prop
>> in a PHY device subnode. I believe that the correct approach is to teach
>> the 'phylib' to get the MDIO device reset GPIO from the device tree node
>> corresponding to this device -- which this patch is doing...
>>
>> Note that I had to modify the AT803x PHY driver as it would stop working
>> otherwise -- it made use of the reset GPIO for its own purposes...
>>
>> Signed-off-by: Sergei Shtylyov <sergei.shtylyov-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
>> Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
>> [geert: Propagate actual errors from fwnode_get_named_gpiod()]
>> [geert: Avoid destroying initial setup]
>> [geert: Consolidate GPIO descriptor acquiring code]
>> Signed-off-by: Geert Uytterhoeven <geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org>
> [...]
>> diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
>> index 2df7b62c1a36811e..8f8b7747c54bc478 100644
>> --- a/drivers/net/phy/mdio_bus.c
>> +++ b/drivers/net/phy/mdio_bus.c
> [...]
>> @@ -48,9 +49,26 @@
>> int mdiobus_register_device(struct mdio_device *mdiodev)
>> {
>> + struct gpio_desc *gpiod = NULL;
>> +
>> if (mdiodev->bus->mdio_map[mdiodev->addr])
>> return -EBUSY;
>> + /* Deassert the optional reset signal */
>
> Umm, but why deassert it here for such a short time?
>
>> + if (mdiodev->dev.of_node)
>> + gpiod = fwnode_get_named_gpiod(&mdiodev->dev.of_node->fwnode,
>> + "reset-gpios", 0, GPIOD_OUT_LOW,
>> + "PHY reset");
>> + if (PTR_ERR(gpiod) == -ENOENT)
>> + gpiod = NULL;
>> + else if (IS_ERR(gpiod))
>> + return PTR_ERR(gpiod);
>
> Hm, returning on error with reset deasserted?
Oops, error means we couldn't drive the GPIO at all...
The 1st question remains though...
[...]
MBR, Sergei
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