* [PATCH V2 1/3] ARM: bcm283x: Define UART pinmuxing on board level
[not found] ` <1501434634-2325-1-git-send-email-stefan.wahren-eS4NqCHxEME@public.gmane.org>
@ 2017-07-30 17:10 ` Stefan Wahren
2017-07-30 17:10 ` [PATCH V2 2/3] dt-bindings: bcm: Add Raspberry Pi Zero W Stefan Wahren
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: Stefan Wahren @ 2017-07-30 17:10 UTC (permalink / raw)
To: Eric Anholt, Rob Herring, Mark Rutland
Cc: Florian Fainelli, Scott Branden,
linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, Gerd Hoffmann,
Stefan Wahren
Until RPI 3 and Zero W the pl011 (uart0) was always on pin 14/15. So in
order to take care of them and other boards in the future,
we need to define UART pinmuxing on board level.
This work based on Eric Anholt's patch "ARM: bcm2385: Don't force pl011
onto pins 14/15." and Fabian Vogt's patch "ARM64: dts: bcm2837: assign
uart0 to BT and uart1 to pin headers".
Signed-off-by: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
---
arch/arm/boot/dts/bcm2835-rpi-a-plus.dts | 6 ++++++
arch/arm/boot/dts/bcm2835-rpi-a.dts | 6 ++++++
arch/arm/boot/dts/bcm2835-rpi-b-plus.dts | 6 ++++++
arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts | 6 ++++++
arch/arm/boot/dts/bcm2835-rpi-b.dts | 6 ++++++
arch/arm/boot/dts/bcm2835-rpi-zero.dts | 6 ++++++
arch/arm/boot/dts/bcm2835-rpi.dtsi | 2 +-
arch/arm/boot/dts/bcm2836-rpi-2-b.dts | 6 ++++++
arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 10 ++++++++++
9 files changed, 53 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts b/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
index d070454..9f86649 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
@@ -99,3 +99,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_gpio14>;
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/bcm2835-rpi-a.dts b/arch/arm/boot/dts/bcm2835-rpi-a.dts
index 46d078e..4b1af06 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-a.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-a.dts
@@ -94,3 +94,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_gpio14>;
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
index 432088e..a846f1e 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
@@ -101,3 +101,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_gpio14>;
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts b/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
index 4133bc2..e860964 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
@@ -94,3 +94,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_gpio14>;
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/bcm2835-rpi-b.dts b/arch/arm/boot/dts/bcm2835-rpi-b.dts
index 4d56fe3..5d77f3f 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-b.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-b.dts
@@ -89,3 +89,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_gpio14>;
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero.dts b/arch/arm/boot/dts/bcm2835-rpi-zero.dts
index 79a20d5..7036240 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-zero.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-zero.dts
@@ -103,3 +103,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_gpio14>;
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
index e55b362..e36c392 100644
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -39,7 +39,7 @@
};
alt0: alt0 {
- brcm,pins = <4 5 7 8 9 10 11 14 15>;
+ brcm,pins = <4 5 7 8 9 10 11>;
brcm,function = <BCM2835_FSEL_ALT0>;
};
};
diff --git a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
index bf19e8c..e8de414 100644
--- a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
+++ b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
@@ -39,3 +39,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_gpio14>;
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
index 972f14d..20725ca 100644
--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
@@ -19,7 +19,17 @@
};
};
+/* uart0 communicates with the BT module */
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>;
+ status = "okay";
+};
+
+/* uart1 is mapped to the pin header */
&uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart1_gpio14>;
status = "okay";
};
--
2.7.4
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^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH V2 2/3] dt-bindings: bcm: Add Raspberry Pi Zero W
[not found] ` <1501434634-2325-1-git-send-email-stefan.wahren-eS4NqCHxEME@public.gmane.org>
2017-07-30 17:10 ` [PATCH V2 1/3] ARM: bcm283x: Define UART pinmuxing on board level Stefan Wahren
@ 2017-07-30 17:10 ` Stefan Wahren
2017-07-30 17:10 ` [PATCH V2 3/3] ARM: dts: bcm2835: " Stefan Wahren
2017-08-03 21:23 ` [PATCH V2 0/3] ARM: bcm283x: Raspberry Pi Zero W support Eric Anholt
3 siblings, 0 replies; 5+ messages in thread
From: Stefan Wahren @ 2017-07-30 17:10 UTC (permalink / raw)
To: Eric Anholt, Rob Herring, Mark Rutland
Cc: Florian Fainelli, Scott Branden,
linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, Gerd Hoffmann,
Stefan Wahren
This adds the root properties for the Raspberry Pi Zero W.
Signed-off-by: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
Reviewed-by: Eric Anholt <eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
index 9c97de2..3e3efa0 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
@@ -42,6 +42,10 @@ Raspberry Pi Zero
Required root node properties:
compatible = "raspberrypi,model-zero", "brcm,bcm2835";
+Raspberry Pi Zero W
+Required root node properties:
+compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
+
Generic BCM2835 board
Required root node properties:
compatible = "brcm,bcm2835";
--
2.7.4
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^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH V2 3/3] ARM: dts: bcm2835: Add Raspberry Pi Zero W
[not found] ` <1501434634-2325-1-git-send-email-stefan.wahren-eS4NqCHxEME@public.gmane.org>
2017-07-30 17:10 ` [PATCH V2 1/3] ARM: bcm283x: Define UART pinmuxing on board level Stefan Wahren
2017-07-30 17:10 ` [PATCH V2 2/3] dt-bindings: bcm: Add Raspberry Pi Zero W Stefan Wahren
@ 2017-07-30 17:10 ` Stefan Wahren
2017-08-03 21:23 ` [PATCH V2 0/3] ARM: bcm283x: Raspberry Pi Zero W support Eric Anholt
3 siblings, 0 replies; 5+ messages in thread
From: Stefan Wahren @ 2017-07-30 17:10 UTC (permalink / raw)
To: Eric Anholt, Rob Herring, Mark Rutland
Cc: Florian Fainelli, Scott Branden,
linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, Gerd Hoffmann,
Stefan Wahren
The Raspberry Pi Zero W has the same components like the Zero plus
a Cypress CYW43438 wireless chip (wifi + bl).
Signed-off-by: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
---
arch/arm/boot/dts/Makefile | 3 +-
arch/arm/boot/dts/bcm2835-rpi-zero-w.dts | 139 +++++++++++++++++++++++++++++++
2 files changed, 141 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
I'm not sure that GPIO34 to GPIO39 are really "not connected".
They are listed in dt-blob.dts, but only declared as input.
Still no full schematics available.
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 4b17f35..6e632a3 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -73,7 +73,8 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
bcm2835-rpi-a-plus.dtb \
bcm2836-rpi-2-b.dtb \
bcm2837-rpi-3-b.dtb \
- bcm2835-rpi-zero.dtb
+ bcm2835-rpi-zero.dtb \
+ bcm2835-rpi-zero-w.dtb
dtb-$(CONFIG_ARCH_BCM_5301X) += \
bcm4708-asus-rt-ac56u.dtb \
bcm4708-asus-rt-ac68u.dtb \
diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
new file mode 100644
index 0000000..82651c3
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2017 Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/dts-v1/;
+#include "bcm2835.dtsi"
+#include "bcm2835-rpi.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"
+
+/ {
+ compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
+ model = "Raspberry Pi Zero W";
+
+ /* Needed by firmware to properly init UARTs */
+ aliases {
+ uart0 = "/soc/serial@7e201000";
+ uart1 = "/soc/serial@7e215040";
+ serial0 = "/soc/serial@7e201000";
+ serial1 = "/soc/serial@7e215040";
+ };
+
+ leds {
+ act {
+ gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
+ };
+ };
+
+ wifi_pwrseq: wifi-pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ pinctrl-names = "default";
+ pinctrl-0 = <&wl_on>;
+ reset-gpios = <&gpio 41 GPIO_ACTIVE_LOW>;
+ };
+};
+
+&gpio {
+ /*
+ * This is based on the official GPU firmware DT blob.
+ *
+ * Legend:
+ * "NC" = not connected (no rail from the SoC)
+ * "FOO" = GPIO line named "FOO" on the schematic
+ * "FOO_N" = GPIO line named "FOO" on schematic, active low
+ */
+ gpio-line-names = "GPIO0",
+ "GPIO1",
+ "SDA1",
+ "SCL1",
+ "GPIO_GCLK",
+ "GPIO5",
+ "GPIO6",
+ "SPI_CE1_N",
+ "SPI_CE0_N",
+ "SPI_MISO",
+ "SPI_MOSI",
+ "SPI_SCLK",
+ "GPIO12",
+ "GPIO13",
+ /* Serial port */
+ "TXD0",
+ "RXD0",
+ "GPIO16",
+ "GPIO17",
+ "GPIO18",
+ "GPIO19",
+ "GPIO20",
+ "GPIO21",
+ "GPIO22",
+ "GPIO23",
+ "GPIO24",
+ "GPIO25",
+ "GPIO26",
+ "GPIO27",
+ "SDA0",
+ "SCL0",
+ "NC", /* GPIO30 */
+ "NC", /* GPIO31 */
+ "NC", /* GPIO32 */
+ "NC", /* GPIO33 */
+ "NC", /* GPIO34 */
+ "NC", /* GPIO35 */
+ "NC", /* GPIO36 */
+ "NC", /* GPIO37 */
+ "NC", /* GPIO38 */
+ "NC", /* GPIO39 */
+ "CAM_GPIO1", /* GPIO40 */
+ "WL_ON", /* GPIO41 */
+ "NC", /* GPIO42 */
+ "WIFI_CLK", /* GPIO43 */
+ "CAM_GPIO0", /* GPIO44 */
+ "BT_ON", /* GPIO45 */
+ "HDMI_HPD_N",
+ "STATUS_LED_N",
+ /* Used by SD Card */
+ "SD_CLK_R",
+ "SD_CMD_R",
+ "SD_DATA0_R",
+ "SD_DATA1_R",
+ "SD_DATA2_R",
+ "SD_DATA3_R";
+
+ pinctrl-0 = <&gpioout &alt0>;
+
+ wl_on: wl-on {
+ brcm,pins = <41>;
+ brcm,function = <BCM2835_FSEL_GPIO_OUT>;
+ };
+};
+
+&hdmi {
+ hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+};
+
+&sdhci {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-0 = <&emmc_gpio34 &gpclk2_gpio43>;
+ mmc-pwrseq = <&wifi_pwrseq>;
+ non-removable;
+ status = "okay";
+
+ brcmf: wifi@1 {
+ reg = <1>;
+ compatible = "brcm,bcm4329-fmac";
+ };
+};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_gpio14>;
+ status = "okay";
+};
--
2.7.4
--
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^ permalink raw reply related [flat|nested] 5+ messages in thread