Kernel-4.18.0-80.el8_brcm,bcm2835-i2s

• Broadcom BCM2835 SoC I2S/PCM module

Required properties:

• compatible: “brcm,bcm2835-i2s”

• reg: Should contain PCM registers location and length.

• clocks: the (PCM) clock to use

• dmas: List of DMA controller phandle and DMA request line ordered pairs.

• dma-names: Identifier string for each DMA request line in the dmas property.
  These strings correspond 1:1 with the ordered pairs in dmas.

  One of the DMA channels will be responsible for transmission (should be
  named “tx”) and one for reception (should be named “rx”).

Example:

bcm2835_i2s: i2s@7e203000 {
compatible = “brcm,bcm2835-i2s”;
reg = <0x7e203000 0x24>;
clocks = <&clocks BCM2835_CLOCK_PCM>;

dmas = <&dma 2>,
       <&dma 3>;
dma-names = "tx", "rx";

};