[alsa-devel] [PATCH v2 2/2] dt: binding: sound cs42l52 driver

[Kumar Gala]

On Nov 13, 2013, at 9:44 AM, Brian Austin <brian.austin at cirrus.com> wrote:

> Add Device Tree Binding for the CS42L52 Codec
> 
> v2 Adds clearer explaination of mic configs and select.
> Renames bindings to '-' instead of '_'.
> Definition of GPIO for reset pin.
> 
> Signed-off-by: Brian Austin <brian.austin at cirrus.com>
> ---
> .../devicetree/bindings/sound/cs42l52.txt          | 48 ++++++++++++++++++++++
> 1 file changed, 48 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/cs42l52.txt
> 
> diff --git a/Documentation/devicetree/bindings/sound/cs42l52.txt b/Documentation/devicetree/bindings/sound/cs42l52.txt
> new file mode 100644
> index 0000000..bd91ecf
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/cs42l52.txt
> @@ -0,0 +1,48 @@
> +CS42L52 audio CODEC
> +
> +Required properties:
> +
> +  - compatible : "cirrus,cs42l52"
> +
> +  - reg : the I2C address of the device for I2C
> +
> +Optional properties:
> +
> +  - reset-gpio : GPIO controller's phandle and the number
> +		 of the GPIO used to reset the codec.
> +  - chgfreq    : Charge Pump Frequency values. Allowable values of
> +		 0x00 through 0x0F.
> +		 Frequency = (64xFs)/(N+2)
> +  - mica-cfg   : MIC A single-ended or differential select.
> +		 0x00 = Single-Ended
> +		 0x01 = Differential
> +  - micb-cfg   : MIC B single-ended or differential select.
> +		 0x00 = Single-Ended
> +		 0x01 = Differential
> +  - mica-sel   : MIC A single ended input select.  For Single-Ended
> +		 configuration, select which MIC to use.
> +		 0x00 = MIC1
> +		 0x01 = MIC2
> +  - micb-sel   : MIC B single ended input select.  For Single-Ended
> +		 configuration, select which MIC to use.
> +		 0x00 = MIC1
> +		 0x01 = MIC2
> +  - micbias-lvl: Set the output voltage level on the MICBIAS Pin
> +		 0x00 = 0.5 x VA
> +		 0x01 = 0.6 x VA
> +		 0x02 = 0.7 x VA
> +		 0x03 = 0.8 x VA
> +		 0x04 = 0.83 x VA
> +		 0x05 = 0.91 x VA

these properties should be cirrus, prefixed.

> +
> +Example:
> +
> +codec: cs42l52 at 4a {
> +	compatible = "cirrus,cs42l52";
> +	reg = <0x4a>;
> +	reset-gpio = <&gpio 10 0>;
> +	chgfreq = <0x05>;
> +	mica-cfg = <0x00>;
> +	mica-sel = <0x01>;
> +	micbias-lvl = <0x05>;
> +};
> -- 
> 1.8.4.rc3
> 
> 
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