powerpc: Integrated Flash controller device tree bindings

Signed-off-by: Dipen Dudhat <Dipen.Dudhat@freescale.com>
Acked-By: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/Documentation/devicetree/bindings/powerpc/fsl/ifc.txt b/Documentation/devicetree/bindings/powerpc/fsl/ifc.txt
new file mode 100644 (file)
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>;
+               };
+       };