1*4882a593Smuzhiyun* Broadcom BCM2835 SoC I2S/PCM module 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunRequired properties: 4*4882a593Smuzhiyun- compatible: "brcm,bcm2835-i2s" 5*4882a593Smuzhiyun- reg: Should contain PCM registers location and length. 6*4882a593Smuzhiyun- clocks: the (PCM) clock to use 7*4882a593Smuzhiyun- dmas: List of DMA controller phandle and DMA request line ordered pairs. 8*4882a593Smuzhiyun- dma-names: Identifier string for each DMA request line in the dmas property. 9*4882a593Smuzhiyun These strings correspond 1:1 with the ordered pairs in dmas. 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun One of the DMA channels will be responsible for transmission (should be 12*4882a593Smuzhiyun named "tx") and one for reception (should be named "rx"). 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunExample: 15*4882a593Smuzhiyun 16*4882a593Smuzhiyunbcm2835_i2s: i2s@7e203000 { 17*4882a593Smuzhiyun compatible = "brcm,bcm2835-i2s"; 18*4882a593Smuzhiyun reg = <0x7e203000 0x24>; 19*4882a593Smuzhiyun clocks = <&clocks BCM2835_CLOCK_PCM>; 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun dmas = <&dma 2>, 22*4882a593Smuzhiyun <&dma 3>; 23*4882a593Smuzhiyun dma-names = "tx", "rx"; 24*4882a593Smuzhiyun}; 25