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Diffstat (limited to 'Documentation/devicetree/bindings/sound/zte,zx-i2s.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/zte,zx-i2s.txt | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/zte,zx-i2s.txt b/Documentation/devicetree/bindings/sound/zte,zx-i2s.txt new file mode 100644 index 000000000..392725146 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/zte,zx-i2s.txt @@ -0,0 +1,45 @@ +ZTE ZX296702 I2S controller + +Required properties: + - compatible : Must be one of: + "zte,zx296718-i2s", "zte,zx296702-i2s" + "zte,zx296702-i2s" + - reg : Must contain I2S core's registers location and length + - clocks : Pairs of phandle and specifier referencing the controller's clocks. + - 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 + the core. The core expects two dma channels for transmit. + - dma-names : Must be "tx" and "rx" + +For more details on the 'dma', 'dma-names', 'clock' and 'clock-names' properties +please check: + * resource-names.txt + * clock/clock-bindings.txt + * dma/dma.txt + +Example: + i2s0: i2s@b005000 { + #sound-dai-cells = <0>; + compatible = "zte,zx296718-i2s", "zte,zx296702-i2s"; + reg = <0x0b005000 0x1000>; + clocks = <&audiocrm AUDIO_I2S0_WCLK>, <&audiocrm AUDIO_I2S0_PCLK>; + clock-names = "wclk", "pclk"; + interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>; + dmas = <&dma 5>, <&dma 6>; + dma-names = "tx", "rx"; + }; + + sound { + compatible = "simple-audio-card"; + simple-audio-card,name = "zx296702_snd"; + simple-audio-card,format = "left_j"; + simple-audio-card,bitclock-master = <&sndcodec>; + simple-audio-card,frame-master = <&sndcodec>; + sndcpu: simple-audio-card,cpu { + sound-dai = <&i2s0>; + }; + + sndcodec: simple-audio-card,codec { + sound-dai = <&acodec>; + }; + }; |