Signed-off-by: addy ke <addy.ke@xxxxxxxxxxxxxx>
---
changes since v1:
- fix binding document according to comments from Mark Rutland
- fix address according to comments from Mark Brown
- combine all properties into "Required Properties" suggested by Heiko Stübner
- remove "Board Specific Portion" suggested by Heiko Stübner
.../devicetree/bindings/spi/spi-rockchip.txt | 37 ++++++++++++++++++++++
1 file changed, 37 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/spi-rockchip.txt
diff --git a/Documentation/devicetree/bindings/spi/spi-rockchip.txt b/Documentation/devicetree/bindings/spi/spi-rockchip.txt
new file mode 100644
index 0000000..7bab355
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-rockchip.txt
@@ -0,0 +1,37 @@
+* Rockchip SPI Controller
+
+The Rockchip SPI controller is used to interface with various devices such as flash
+and display controllers using the SPI communication interface.
+
+Required Properties:
+
+- compatible: should be one of the following.
+ "rockchip,rk3066-spi" for rk3066.
+ "rockchip,rk3188-spi", "rockchip,rk3066-spi" for rk3188.
+ "rockchip,rk3288-spi", "rockchip,rk3066-spi" for rk3288.
+- reg: physical base address of the controller and length of memory mapped
+ region.
+- interrupts: The interrupt number to the cpu. The interrupt specifier format
+ depends on the interrupt controller.
+- clocks: Must contain an entry for each entry in clock-names.
+- clock-names: Shall be "spiclk" for the transfer-clock, and "apb_pclk" for
+ the peripheral clock.
+- dmas: DMA specifiers for tx and rx dma. See the DMA client binding,
+ Documentation/devicetree/bindings/dma/dma.txt
+- dma-names: DMA request names should include "tx" and "rx" if present.
+- #address-cells: should be 1.
+- #size-cells: should be 0.
+
+Example:
+
+ spi0: spi@ff110000 {
+ compatible = "rockchip,rk3066-spi";
+ reg = <0xff110000 0x1000>;
+ dmas = <&pdma1 11>, <&pdma1 12>;
+ dma-names = "tx", "rx";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>;
+ clock-names = "spiclk", "apb_pclk";
+ };
--
1.8.3.2
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