ASoC: core: Generic ac97 link reset functions

[karo-tx-linux.git] / Documentation / devicetree / bindings / sound / soc-ac97link.txt

diff --git a/Documentation/devicetree/bindings/sound/soc-ac97link.txt b/Documentation/devicetree/bindings/sound/soc-ac97link.txt
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+AC97 link bindings
+
+These bindings can be included within any other device node.
+
+Required properties:
+ - pinctrl-names: Has to contain following states to setup the correct
+   pinmuxing for the used gpios:
+       "ac97-running": AC97-link is active
+       "ac97-reset": AC97-link reset state
+       "ac97-warm-reset": AC97-link warm reset state
+ - ac97-gpios: List of gpio phandles with args in the order ac97-sync,
+   ac97-sdata, ac97-reset
+
+
+Example:
+
+ssi {
+       ...
+
+       pinctrl-names = "default", "ac97-running", "ac97-reset", "ac97-warm-reset";
+       pinctrl-0 = <&ac97link_running>;
+       pinctrl-1 = <&ac97link_running>;
+       pinctrl-2 = <&ac97link_reset>;
+       pinctrl-3 = <&ac97link_warm_reset>;
+       ac97-gpios = <&gpio3 20 0 &gpio3 22 0 &gpio3 28 0>;
+
+       ...
+};