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Diffstat (limited to 'kernel/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt')
| -rw-r--r-- | kernel/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/kernel/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt b/kernel/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt new file mode 100644 index 000000000..eaf00102d --- /dev/null +++ b/kernel/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt @@ -0,0 +1,36 @@ +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"; +}; |