Add "rockchip,grf" for driver to get physical address of GRF, and "rockchip,grf-io-vsel" for driver to set voltage for I2S controller according to hardware request.
Requested by rk3xxx I2S controller and tested ok on rk3288-pinky board.
Change-Id: I2587d15c25e64c569857369326653d8a450bae19 Signed-off-by: Jianqun jay.xu@rock-chips.com --- Documentation/devicetree/bindings/sound/rockchip-i2s.txt | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/sound/rockchip-i2s.txt b/Documentation/devicetree/bindings/sound/rockchip-i2s.txt index 6c55fcf..b995fe6 100644 --- a/Documentation/devicetree/bindings/sound/rockchip-i2s.txt +++ b/Documentation/devicetree/bindings/sound/rockchip-i2s.txt @@ -9,6 +9,8 @@ Required properties: - "rockchip,rk3066-i2s": for rk3066 - "rockchip,rk3188-i2s", "rockchip,rk3066-i2s": for rk3188 - "rockchip,rk3288-i2s", "rockchip,rk3066-i2s": for rk3288 +- rockchip,grf: physical base address of GRF. +- rockchip,grf-io-vsel: select this if I2S controller powerd by 1.8v. - reg: physical base address of the controller and length of memory mapped region. - interrupts: should contain the I2S interrupt. @@ -26,12 +28,14 @@ Example for rk3288 I2S controller:
i2s@ff890000 { compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s"; + rockchip,grf = <&grf>; + rockchip,grf-io-vsel; 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"; + dma-names = "tx", "rx"; clock-names = "i2s_hclk", "i2s_clk"; clocks = <&cru HCLK_I2S0>, <&cru SCLK_I2S0>; };