linux/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt
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   1NVIDIA Tegra 20 AC97 controller
   2
   3Required properties:
   4- compatible : "nvidia,tegra20-ac97"
   5- reg : Should contain AC97 controller registers location and length
   6- interrupts : Should contain AC97 interrupt
   7- nvidia,dma-request-selector : The Tegra DMA controller's phandle and
   8  request selector for the AC97 controller
   9- nvidia,codec-reset-gpio : The Tegra GPIO controller's phandle and the number
  10  of the GPIO used to reset the external AC97 codec
  11- nvidia,codec-sync-gpio : The Tegra GPIO controller's phandle and the number
  12  of the GPIO corresponding with the AC97 DAP _FS line
  13Example:
  14
  15ac97@70002000 {
  16        compatible = "nvidia,tegra20-ac97";
  17        reg = <0x70002000 0x200>;
  18        interrupts = <0 81 0x04>;
  19        nvidia,dma-request-selector = <&apbdma 12>;
  20        nvidia,codec-reset-gpio = <&gpio 170 0>;
  21        nvidia,codec-sync-gpio = <&gpio 120 0>;
  22};
  23