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>

1 files changed, 76 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/powerpc/fsl/ifc.txt b/Documentation/devicetree/bindings/powerpc/fsl/ifc.txt
new file mode 100644
index 000000000000..939a26d541f6
--- /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>;
+                };
+        };