18c2ecf20Sopenharmony_ciZTE ZX296702 I2S controller 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ciRequired properties: 48c2ecf20Sopenharmony_ci - compatible : Must be one of: 58c2ecf20Sopenharmony_ci "zte,zx296718-i2s", "zte,zx296702-i2s" 68c2ecf20Sopenharmony_ci "zte,zx296702-i2s" 78c2ecf20Sopenharmony_ci - reg : Must contain I2S core's registers location and length 88c2ecf20Sopenharmony_ci - clocks : Pairs of phandle and specifier referencing the controller's clocks. 98c2ecf20Sopenharmony_ci - clock-names: "wclk" for the wclk, "pclk" for the pclk to the I2S interface. 108c2ecf20Sopenharmony_ci - dmas: Pairs of phandle and specifier for the DMA channel that is used by 118c2ecf20Sopenharmony_ci the core. The core expects two dma channels for transmit. 128c2ecf20Sopenharmony_ci - dma-names : Must be "tx" and "rx" 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ciFor more details on the 'dma', 'dma-names', 'clock' and 'clock-names' properties 158c2ecf20Sopenharmony_ciplease check: 168c2ecf20Sopenharmony_ci * resource-names.txt 178c2ecf20Sopenharmony_ci * clock/clock-bindings.txt 188c2ecf20Sopenharmony_ci * dma/dma.txt 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ciExample: 218c2ecf20Sopenharmony_ci i2s0: i2s@b005000 { 228c2ecf20Sopenharmony_ci #sound-dai-cells = <0>; 238c2ecf20Sopenharmony_ci compatible = "zte,zx296718-i2s", "zte,zx296702-i2s"; 248c2ecf20Sopenharmony_ci reg = <0x0b005000 0x1000>; 258c2ecf20Sopenharmony_ci clocks = <&audiocrm AUDIO_I2S0_WCLK>, <&audiocrm AUDIO_I2S0_PCLK>; 268c2ecf20Sopenharmony_ci clock-names = "wclk", "pclk"; 278c2ecf20Sopenharmony_ci interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>; 288c2ecf20Sopenharmony_ci dmas = <&dma 5>, <&dma 6>; 298c2ecf20Sopenharmony_ci dma-names = "tx", "rx"; 308c2ecf20Sopenharmony_ci }; 318c2ecf20Sopenharmony_ci 328c2ecf20Sopenharmony_ci sound { 338c2ecf20Sopenharmony_ci compatible = "simple-audio-card"; 348c2ecf20Sopenharmony_ci simple-audio-card,name = "zx296702_snd"; 358c2ecf20Sopenharmony_ci simple-audio-card,format = "left_j"; 368c2ecf20Sopenharmony_ci simple-audio-card,bitclock-master = <&sndcodec>; 378c2ecf20Sopenharmony_ci simple-audio-card,frame-master = <&sndcodec>; 388c2ecf20Sopenharmony_ci sndcpu: simple-audio-card,cpu { 398c2ecf20Sopenharmony_ci sound-dai = <&i2s0>; 408c2ecf20Sopenharmony_ci }; 418c2ecf20Sopenharmony_ci 428c2ecf20Sopenharmony_ci sndcodec: simple-audio-card,codec { 438c2ecf20Sopenharmony_ci sound-dai = <&acodec>; 448c2ecf20Sopenharmony_ci }; 458c2ecf20Sopenharmony_ci }; 46