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ASoC: sunxi: Add bindings for A23/A33/H3 codec's analog path controls

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The internal codec on A23/A33/H3 is split into 2 parts. The
analog path controls are routed through an embedded custom register
bus accessed through the PRCM block.

The SoCs share a common set of inputs, outputs, and audio paths.
The following table lists the differences.

    ----------------------------------------
    | Feature \ SoC |  A23  |  A33  |  H3  |
    ----------------------------------------
    | Headphone     |   v   |   v   |      |
    ----------------------------------------
    | Line Out      |       |       |  v   |
    ----------------------------------------
    | Phone In/Out  |   v   |   v   |      |
    ----------------------------------------

Add a binding for this hardware.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Chen-Yu Tsai 2016-11-12 14:46:39 +08:00 committed by Mark Brown
parent 35db57622c
commit 837e71847a
1 changed files with 16 additions and 0 deletions
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16
Documentation/devicetree/bindings/sound/sun8i-codec-analog.txt Normal file
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* Allwinner Codec Analog Controls
Required properties:
- compatible: must be one of the following compatibles:
- "allwinner,sun8i-a23-codec-analog"
- "allwinner,sun8i-h3-codec-analog"
Required properties if not a sub-node of the PRCM node:
- reg: must contain the registers location and length
Example:
prcm: prcm@01f01400 {
codec_analog: codec-analog {
compatible = "allwinner,sun8i-a23-codec-analog";
};
};