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| -rw-r--r-- | Documentation/devicetree/bindings/powerpc/fsl/ifc.txt | 76 |
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 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>; + }; + }; |
