On May 5, 2014, at 3:09 PM, Brian Austin <brian.austin@xxxxxxxxxx> wrote:
> This patch adds binding documentation for the Cirrus Logic CS42L56 Low Power Stereo I2C CODEC
>
> Signed-off-by: Brian Austin <brian.austin@xxxxxxxxxx>
> ---
> .../devicetree/bindings/sound/cs42l56.txt | 63 ++++++++++++++++++++
> 1 file changed, 63 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/cs42l56.txt
>
> diff --git a/Documentation/devicetree/bindings/sound/cs42l56.txt b/Documentation/devicetree/bindings/sound/cs42l56.txt
> new file mode 100644
> index 0000000..9ae074f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/cs42l56.txt
> @@ -0,0 +1,63 @@
> +CS42L52 audio CODEC
> +
> +Required properties:
> +
> + - compatible : "cirrus,cs42l56"
> +
> + - reg : the I2C address of the device for I2C
> +
> + - VA-supply, VCP-supply, VLDO-supply : power supplies for the device,
> + as covered in Documentation/devicetree/bindings/regulator/regulator.txt.
> +
> +Optional properties:
> +
> + - cirrus,gpio-nreset : GPIO controller's phandle and the number
> + of the GPIO used to reset the codec.
> +
> + - cirrus,chgfreq-divisor : Values used to set the Charge Pump Frequency.
> + Allowable values of 0x00 through 0x0F. These are raw values written to the
> + register, not the actual frequency. The frequency is determined by the following.
> + Frequency = MCLK / 4 * (N+2)
> + N = chgfreq_val
> + MCLK = Where MCLK is the frequency of the mclk signal after the MCLKDIV2 circuit.
> +
> + - cirrus,ain1a-ref-cfg, ain1b-ref-cfg : boolean, If present, AIN1A or AIN1B are configured
> + as a pseudo-differential input referenced to AIN1REF/AIN3A.
What happens if a DT had both bools?
> +
> + - cirrus,ain2a-ref-cfg, ain2b-ref-cfg : boolean, If present, AIN2A or AIN2B are configured
> + as a pseudo-differential input referenced to AIN2REF/AIN3B.
> +
> + - cirrus,micbias-lvl: Set the output voltage level on the MICBIAS Pin.
> + 0 = 0.5 x VA
> + 1 = 0.6 x VA
> + 2 = 0.7 x VA
> + 3 = 0.8 x VA
> + 4 = 0.83 x VA
> + 5 = 0.91 x VA
> +
> + - cirrus,adaptive-pwr-cfg : Configures how the power to the Headphone and Lineout
> + Amplifiers adapt to the output signal levels.
> + 0 = Adapt to Volume Mode. Voltage level determined by the sum of the relevant volume settings.
> + 1 = Fixed - Headphone and Line Amp supply = + or - VCP/2.
> + 2 = Fixed - Headphone and Line Amp supply = + or - VCP.
> + 3 = Adapted to Signal; Voltage level is dynamically determined by the output signal.
> +
> + - cirrus,hpf-left-freq, hpf-right-freq : Sets the corner frequency (-3dB point) for the internal High-Pass
> + Filter.
> + 0 = 1.8Hz
> + 1 = 119Hz
> + 2 = 236Hz
> + 3 = 464Hz
> +
Add a include/dt-bindings for all the various enums
> +
> +Example:
> +
> +codec: codec@4b {
> + compatible = "cirrus,cs42l56";
> + reg = <0x4b>;
> + gpio-reset = <&gpio 10 0>;
> + cirrus,chgfreq-divisor = <0x05>;
> + cirrus.ain1_ref_cfg;
> + cirrus,micbias-lvl = <5>;
> + VA-supply = <®_audio>;
> +};
> --
> 1.7.9.5
>
--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
