summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt')
-rw-r--r--Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt22
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt b/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt
new file mode 100644
index 000000000000..c1454979c1ef
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt
@@ -0,0 +1,22 @@
+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
+- nvidia,dma-request-selector : The Tegra DMA controller's phandle and
+ request selector for the AC97 controller
+- 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,dma-request-selector = <&apbdma 12>;
+ nvidia,codec-reset-gpio = <&gpio 170 0>;
+ nvidia,codec-sync-gpio = <&gpio 120 0>;
+};