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author | addy ke <addy.ke@rock-chips.com> | 2014-07-01 09:02:57 +0800 |
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committer | Mark Brown <broonie@linaro.org> | 2014-07-04 19:32:19 +0100 |
commit | 765d52b598e1eaa8edae7aa492b99e193ea2c30b (patch) | |
tree | 1b85114697885f5fcbd66358bfba111a3740254a /Documentation | |
parent | 7171511eaec5bf23fb06078f59784a3a0626b38f (diff) | |
download | op-kernel-dev-765d52b598e1eaa8edae7aa492b99e193ea2c30b.zip op-kernel-dev-765d52b598e1eaa8edae7aa492b99e193ea2c30b.tar.gz |
spi/rockchip: add rockchip spi DT binding
Signed-off-by: addy ke <addy.ke@rock-chips.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/spi/spi-rockchip.txt | 37 |
1 files changed, 37 insertions, 0 deletions
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"; + }; |