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Date: Sat, 5 Jul 2014 19:10:38 +0800 From: jianqun <xjq@...k-chips.com> To: heiko@...ech.de, lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz, tiwai@...e.de, grant.likely@...aro.org, robh+dt@...nel.org Cc: linux-kernel@...r.kernel.org, alsa-devel@...a-project.org, devicetree@...r.kernel.org, zhangqing@...k-chips.com, hj@...k-chips.com, kever.yang@...k-chips.com, huangtao@...k-chips.com, zyw@...k-chips.com, yzq@...k-chips.com, zhenfu.fang@...k-chips.com, cf@...k-chips.com, kfx@...k-chips.com, Jianqun Xu <xjq@...k-chips.com> Subject: [PATCH v3 1/2] ASoC: dt-bindings: add rockchip i2s bindings From: Jianqun Xu <xjq@...k-chips.com> Add devicetree bindings for i2s controller found on rk3066, rk3188 and rk3288 processors from rockchip. Signed-off-by: Jianqun Xu <xjq@...k-chips.com> --- changes since v2: - change the description of dma-names, adviced by Mark - change the description of interrupts, adviced by Mark - list clock-names to be easy to read, adviced by Mark - modify compatible for rk3288 example, adviced by Mark and Heiko changes since v1: - modify the description of clock-names property, adviced by Mark Rutland. - modify the example to fit for rk3288. .../devicetree/bindings/sound/rockchip-i2s.txt | 37 ++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/rockchip-i2s.txt diff --git a/Documentation/devicetree/bindings/sound/rockchip-i2s.txt b/Documentation/devicetree/bindings/sound/rockchip-i2s.txt new file mode 100644 index 0000000..6c55fcf --- /dev/null +++ b/Documentation/devicetree/bindings/sound/rockchip-i2s.txt @@ -0,0 +1,37 @@ +* Rockchip I2S controller + +The I2S bus (Inter-IC sound bus) is a serial link for digital +audio data transfer between devices in the system. + +Required properties: + +- compatible: should be one of the followings + - "rockchip,rk3066-i2s": for rk3066 + - "rockchip,rk3188-i2s", "rockchip,rk3066-i2s": for rk3188 + - "rockchip,rk3288-i2s", "rockchip,rk3066-i2s": for rk3288 +- reg: physical base address of the controller and length of memory mapped + region. +- interrupts: should contain the I2S interrupt. +- #address-cells: should be 1. +- #size-cells: should be 0. +- dmas: DMA specifiers for tx and rx dma. See the DMA client binding, + Documentation/devicetree/bindings/dma/dma.txt +- dma-names: should include "tx" and "rx". +- clocks: a list of phandle + clock-specifer pairs, one for each entry in clock-names. +- clock-names: should contain followings: + - "i2s_hclk": clock for I2S BUS + - "i2s_clk" : clock for I2S controller + +Example for rk3288 I2S controller: + +i2s@...90000 { + compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s"; + reg = <0xff890000 0x10000>; + interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>; + #address-cells = <1>; + #size-cells = <0>; + dmas = <&pdma1 0>, <&pdma1 1>; + dma-names = "rx", "tx"; + clock-names = "i2s_hclk", "i2s_clk"; + clocks = <&cru HCLK_I2S0>, <&cru SCLK_I2S0>; +}; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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