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