linux/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-wm9712.txt
Stephen Warren d8f64797c5 ARM: tegra: add missing clock documentation to DT bindings
Many of the Tegra DT binding documents say nothing about the clocks or
clock-names properties, yet those are present and required in DT files.
This patch simply updates the documentation file to match the implicit
definition of the binding, based on real-world DT content.

All Tegra bindings that mention clocks are updated to have consistent
wording and formatting of the clock-related properties.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-By: Terje Bergstrom <tbergstrom@nvidia.com>
2013-12-11 16:41:55 -07:00

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NVIDIA Tegra audio complex
Required properties:
- compatible : "nvidia,tegra-audio-wm9712"
- clocks : Must contain an entry for each entry in clock-names.
See ../clocks/clock-bindings.txt for details.
- clock-names : Must include the following entries:
- pll_a
- pll_a_out0
- mclk (The Tegra cdev1/extern1 clock, which feeds the CODEC's mclk)
- nvidia,model : The user-visible name of this sound complex.
- nvidia,audio-routing : A list of the connections between audio components.
Each entry is a pair of strings, the first being the connection's sink,
the second being the connection's source. Valid names for sources and
sinks are the WM9712's pins, and the jacks on the board:
WM9712 pins:
* MONOOUT
* HPOUTL
* HPOUTR
* LOUT2
* ROUT2
* OUT3
* LINEINL
* LINEINR
* PHONE
* PCBEEP
* MIC1
* MIC2
* Mic Bias
Board connectors:
* Headphone
* LineIn
* Mic
- nvidia,ac97-controller : The phandle of the Tegra AC97 controller
Example:
sound {
compatible = "nvidia,tegra-audio-wm9712-colibri_t20",
"nvidia,tegra-audio-wm9712";
nvidia,model = "Toradex Colibri T20";
nvidia,audio-routing =
"Headphone", "HPOUTL",
"Headphone", "HPOUTR",
"LineIn", "LINEINL",
"LineIn", "LINEINR",
"Mic", "MIC1";
nvidia,ac97-controller = <&ac97>;
clocks = <&tegra_car 112>, <&tegra_car 113>, <&tegra_car 93>;
clock-names = "pll_a", "pll_a_out0", "mclk";
};