From: Dipen Dudhat <Dipen.Dudhat@freescale.com>
To: <devicetree-discuss@lists.ozlabs.org>, <linuxppc-dev@lists.ozlabs.org>
Cc: linuxppc-dev@linux.freescale.net
Subject: [PATCH][upstream] powerpc:Integrated Flash controller device tree bindings
Date: Thu, 19 May 2011 12:08:23 +0530 [thread overview]
Message-ID: <1305787103-25105-1-git-send-email-Dipen.Dudhat@freescale.com> (raw)
Signed-off-by: Dipen Dudhat <Dipen.Dudhat@freescale.com>
Acked-By: Scott Wood <scottwood@freescale.com>
---
Based upon git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git (branch -> master)
.../devicetree/bindings/powerpc/fsl/ifc.txt | 76 ++++++++++++++++++++
1 files changed, 76 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/powerpc/fsl/ifc.txt
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/ifc.txt b/Documentation/devicetree/bindings/powerpc/fsl/ifc.txt
new file mode 100644
index 0000000..939a26d
--- /dev/null
+++ b/Documentation/devicetree/bindings/powerpc/fsl/ifc.txt
@@ -0,0 +1,76 @@
+Integrated Flash Controller
+
+Properties:
+- name : Should be ifc
+- compatible : should contain "fsl,ifc". The version of the integrated
+ flash controller can be found in the IFC_REV register at
+ offset zero.
+
+- #address-cells : Should be either two or three. The first cell is the
+ chipselect number, and the remaining cells are the
+ offset into the chipselect.
+- #size-cells : Either one or two, depending on how large each chipselect
+ can be.
+- reg : Offset and length of the register set for the device
+- interrupts : IFC has two interrupts. The first one is the "common"
+ interrupt(CM_EVTER_STAT), and second is the NAND interrupt
+ (NAND_EVTER_STAT).
+
+- ranges : Each range corresponds to a single chipselect, and covers
+ the entire access window as configured.
+
+Child device nodes describe the devices connected to IFC such as NOR (e.g.
+cfi-flash) and NAND (fsl,ifc-nand). There might be board specific devices
+like FPGAs, CPLDs, etc.
+
+Example:
+
+ ifc@ffe1e000 {
+ compatible = "fsl,ifc", "simple-bus";
+ #address-cells = <2>;
+ #size-cells = <1>;
+ reg = <0x0 0xffe1e000 0 0x2000>;
+ interrupts = <16 2 19 2>;
+
+ /* NOR, NAND Flashes and CPLD on board */
+ ranges = <0x0 0x0 0x0 0xee000000 0x02000000
+ 0x1 0x0 0x0 0xffa00000 0x00010000
+ 0x3 0x0 0x0 0xffb00000 0x00020000>;
+
+ flash@0,0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "cfi-flash";
+ reg = <0x0 0x0 0x2000000>;
+ bank-width = <2>;
+ device-width = <1>;
+
+ partition@0 {
+ /* 32MB for user data */
+ reg = <0x0 0x02000000>;
+ label = "NOR Data";
+ };
+ };
+
+ flash@1,0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "fsl,ifc-nand";
+ reg = <0x1 0x0 0x10000>;
+
+ partition@0 {
+ /* This location must not be altered */
+ /* 1MB for u-boot Bootloader Image */
+ reg = <0x0 0x00100000>;
+ label = "NAND U-Boot Image";
+ read-only;
+ };
+ };
+
+ cpld@3,0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "fsl,p1010rdb-cpld";
+ reg = <0x3 0x0 0x000001f>;
+ };
+ };
--
1.5.6.5
next reply other threads:[~2011-05-19 6:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-19 6:38 Dipen Dudhat [this message]
2011-05-19 6:41 ` [linuxppc-dev] [PATCH][upstream] powerpc:Integrated Flash controller device tree bindings Kumar Gala
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