18c2ecf20Sopenharmony_ci* Broadcom BCM2835 SoC I2S/PCM module 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ciRequired properties: 48c2ecf20Sopenharmony_ci- compatible: "brcm,bcm2835-i2s" 58c2ecf20Sopenharmony_ci- reg: Should contain PCM registers location and length. 68c2ecf20Sopenharmony_ci- clocks: the (PCM) clock to use 78c2ecf20Sopenharmony_ci- dmas: List of DMA controller phandle and DMA request line ordered pairs. 88c2ecf20Sopenharmony_ci- dma-names: Identifier string for each DMA request line in the dmas property. 98c2ecf20Sopenharmony_ci These strings correspond 1:1 with the ordered pairs in dmas. 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ci One of the DMA channels will be responsible for transmission (should be 128c2ecf20Sopenharmony_ci named "tx") and one for reception (should be named "rx"). 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ciExample: 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_cibcm2835_i2s: i2s@7e203000 { 178c2ecf20Sopenharmony_ci compatible = "brcm,bcm2835-i2s"; 188c2ecf20Sopenharmony_ci reg = <0x7e203000 0x24>; 198c2ecf20Sopenharmony_ci clocks = <&clocks BCM2835_CLOCK_PCM>; 208c2ecf20Sopenharmony_ci 218c2ecf20Sopenharmony_ci dmas = <&dma 2>, 228c2ecf20Sopenharmony_ci <&dma 3>; 238c2ecf20Sopenharmony_ci dma-names = "tx", "rx"; 248c2ecf20Sopenharmony_ci}; 25