NVIDIA Tegra 20 AC97 controller Required properties: - compatible : "nvidia,tegra20-ac97" - reg : Should contain AC97 controller registers location and length - interrupts : Should contain AC97 interrupt - resets : Must contain an entry for each entry in reset-names. See ../reset/reset.txt for details. - reset-names : Must include the following entries: - ac97 - dmas : Must contain an entry for each entry in clock-names. See ../dma/dma.txt for details. - dma-names : Must include the following entries: - rx - tx - clocks : Must contain one entry, for the module clock. See ../clocks/clock-bindings.txt for details. - nvidia,codec-reset-gpio : The Tegra GPIO controller's phandle and the number of the GPIO used to reset the external AC97 codec - nvidia,codec-sync-gpio : The Tegra GPIO controller's phandle and the number of the GPIO corresponding with the AC97 DAP _FS line Example: ac97@70002000 { compatible = "nvidia,tegra20-ac97"; reg = <0x70002000 0x200>; interrupts = <0 81 0x04>; nvidia,codec-reset-gpio = <&gpio 170 0>; nvidia,codec-sync-gpio = <&gpio 120 0>; clocks = <&tegra_car 3>; resets = <&tegra_car 3>; reset-names = "ac97"; dmas = <&apbdma 12>, <&apbdma 12>; dma-names = "rx", "tx"; };