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Commit b5f18ba8 authored by Baoyou Xie's avatar Baoyou Xie Committed by Mark Brown
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ASoC: zx-i2s: Add the info of pclk to the binding document for zx2967 family 



ZTE's zx2967 I2S controller driver introduces pclk, this
patch documents this fact.

Signed-off-by: default avatarBaoyou Xie <baoyou.xie@linaro.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 6c2494f3

Documentation/devicetree/bindings/sound/zte,zx-i2s.txt

+8 −6
Original line number Original line Diff line number Diff line 
ZTE ZX296702 I2S controller

ZTE ZX296702 I2S controller





Required properties:

Required properties:

 - compatible : Must be "zte,zx296702-i2s"

 - compatible : Must be one of:

	"zte,zx296718-i2s", "zte,zx296702-i2s"

	"zte,zx296702-i2s"

 - reg : Must contain I2S core's registers location and length

 - reg : Must contain I2S core's registers location and length

 - clocks : Pairs of phandle and specifier referencing the controller's clocks.

 - clocks : Pairs of phandle and specifier referencing the controller's clocks.

 - clock-names: "tx" for the clock to the I2S interface.

 - clock-names: "wclk" for the wclk, "pclk" for the pclk to the I2S interface.

 - dmas: Pairs of phandle and specifier for the DMA channel that is used by

 - dmas: Pairs of phandle and specifier for the DMA channel that is used by

   the core. The core expects two dma channels for transmit.

   the core. The core expects two dma channels for transmit.

 - dma-names : Must be "tx" and "rx"

 - dma-names : Must be "tx" and "rx"
@@ -16,12 +18,12 @@ please check: 
	* dma/dma.txt

	* dma/dma.txt





Example:

Example:

	i2s0: i2s0@0b005000 {

	i2s0: i2s@b005000 {

		#sound-dai-cells = <0>;

		#sound-dai-cells = <0>;

		compatible = "zte,zx296702-i2s";

		compatible = "zte,zx296718-i2s", "zte,zx296702-i2s";

		reg = <0x0b005000 0x1000>;

		reg = <0x0b005000 0x1000>;

		clocks = <&lsp0clk ZX296702_I2S0_DIV>;

		clocks = <&audiocrm AUDIO_I2S0_WCLK>, <&audiocrm AUDIO_I2S0_PCLK>;

		clock-names = "tx";

		clock-names = "wclk", "pclk";

		interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>;

		interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>;

		dmas = <&dma 5>, <&dma 6>;

		dmas = <&dma 5>, <&dma 6>;

		dma-names = "tx", "rx";

		dma-names = "tx", "rx";