| 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>; |
| }; |
| }; |
