Documentation/devicetree/bindings/sound/amlogic,axg-pdm.txt

   1 * Amlogic Audio PDM input
   2
   3 Required properties:
   4 - compatible: 'amlogic,axg-pdm' or
   5               'amlogic,g12a-pdm' or
   6               'amlogic,sm1-pdm'
   7 - reg: physical base address of the controller and length of memory
   8        mapped region.
   9 - clocks: list of clock phandle, one for each entry clock-names.
  10 - clock-names: should contain the following:
  11   * "pclk"   : peripheral clock.
  12   * "dclk"   : pdm digital clock
  13   * "sysclk" : dsp system clock
  14 - #sound-dai-cells: must be 0.
  15
  16 Optional property:
  17 - resets: phandle to the dedicated reset line of the pdm input.
  18
  19 Example of PDM on the A113 SoC:
  20
  21 pdm: audio-controller@ff632000 {
  22         compatible = "amlogic,axg-pdm";
  23         reg = <0x0 0xff632000 0x0 0x34>;
  24         #sound-dai-cells = <0>;
  25         clocks = <&clkc_audio AUD_CLKID_PDM>,
  26                  <&clkc_audio AUD_CLKID_PDM_DCLK>,
  27                  <&clkc_audio AUD_CLKID_PDM_SYSCLK>;
  28         clock-names = "pclk", "dclk", "sysclk";
  29 };