Signed-off-by: addy ke <addy.ke@xxxxxxxxxxxxxx> --- .../devicetree/bindings/spi/spi-rockchip.txt | 51 ++++++++++++++++++++++ 1 file changed, 51 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..ce9c881 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-rockchip.txt @@ -0,0 +1,51 @@ +* 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 SoC Specific Properties: + +- compatible: should be one of the following. + - rockchip,rk3066-spi: for rk3066, rk3188 and rk3288 platforms. +- 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. + +Optional properties: +- 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. + +Example: + +- SoC Specific Portion: + + spi0: spi@ff110000 { + compatible = "rockchip,rockchip-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>; + pinctrl-names = "default"; + pinctrl-0 = <&spi0_clk &spi0_tx &spi0_rx &spi0_cs0 &spi0_cs1>; + clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>; + clock-names = "spiclk", "apb_pclk"; + status = "disabled"; + }; + +- Board Specific Portion: + + &spi0 { + status = "okay"; + spi_test@00 { + compatible = "rockchip,spi_test"; + reg = <0>; + spi-max-frequency = <24000000>; + }; + }; -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html