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    SubjectRe: [PATCH 1/2] ASoC: dt-bindings: add rockchip i2s bindings
    On Tue, Jul 01, 2014 at 09:37:39AM +0100, jianqun wrote:
    > From: Jianqun Xu <xjq@rock-chips.com>
    >
    > Add devicetree bindings for i2s controller found on rk3066, rk3188 and rk3288
    > processors from rockchip.
    >
    > Signed-off-by: Jianqun Xu <xjq@rock-chips.com>
    > ---
    > .../devicetree/bindings/sound/rockchip-i2s.txt | 45 ++++++++++++++++++++
    > 1 file changed, 45 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..e9ab122
    > --- /dev/null
    > +++ b/Documentation/devicetree/bindings/sound/rockchip-i2s.txt
    > @@ -0,0 +1,45 @@
    > +* Rockchip I2S controller
    > +
    > +The I2S bus (Inter-IC sound bus) is a serial link for digital audio data transfer
    > +between devices in the system and be invented by Philips Semiconductor.
    > +
    > +Required properties:
    > +
    > +- compatible : should be one of the following.
    > + "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 : The interrupt number to the cpu. The interrupt specifier format
    > + depends on the interrupt controller.
    > +- #address-cells : should be 1.
    > +- #size-cells : should be 0.
    > +- dmas : list of DMA controller phandle and DMA request line ordered pairs.
    > +- dma-names : identifier string for each DMA request line in the dmas property.
    > + These strings correspond 1:1 with the ordered pairs in dmas.
    > + Must include the following entries:
    > + - rx:
    > + - tx:

    Can these be quoted for consistency with clock-names below?

    > +- clocks : Handle to internal work clock and master clock output to IO.

    Can this be written in terms of clock-names, e.g.

    - clocks: a list of phandle + clock-specifer pairs, one for each entry
    in clock-names.

    Cheers,
    Mark.

    > +- clock-names :
    > + - "i2s_hclk": support AHB bus interface
    > + - "i2s_clk": work clock for i2s controller
    > +
    > +Example:
    > +
    > +aliases {
    > + i2s0 = &i2s0;
    > +}
    > +
    > +i2s0: i2s@ff890000 {
    > + compatible = "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
    >
    >
    > --
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