Document the bindings used by the Renesas R-Car D3 RPC controller.
Signed-off-by: Mason Yang <[email protected]>
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.../devicetree/bindings/spi/spi-renesas-rpc.txt | 33 ++++++++++++++++++++++
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create mode 100644 Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt
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b/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt
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+Renesas R-Car D3 RPC controller Device Tree Bindings
+----------------------------------------------------
+
+Required properties:
+- compatible: should be "renesas,rpc-r8a77995"
+- #address-cells: should be 1
+- #size-cells: should be 0
+- reg: should contain 2 entries, one for the registers and one for the direct
+ mapping area
+- reg-names: should contain "rpc_regs" and "dirmap"
+- interrupts: interrupt line connected to the RPC SPI controller
+- clock-names: should contain "clk_rpc"
+- clocks: should contain 1 entries for the CPG Module 917 clocks
+
+Example:
+
+ rpc: spi@ee200000 {
+ compatible = "renesas,rpc-r8a77995";
+ reg = <0 0xee200000 0 0x8100>, <0 0x08000000 0 0x4000000>;
+ reg-names = "rpc_regs", "dirmap";
+ clocks = <&cpg CPG_MOD 917>;
+ clock-names = "clk_rpc";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <40000000>;
+ spi-tx-bus-width = <1>;
+ spi-rx-bus-width = <1>;
+ };
+ };
--
1.9.1
