On Nov 13, 2013, at 9:44 AM, Brian Austin <brian.austin@xxxxxxxxxx> 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@xxxxxxxxxx>
> ---
> .../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@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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