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linux
ASoC: dt: binding: sound cs42l52 driver
Signed-off-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
authored by
Brian Austin
and committed by
Mark Brown
3a85ca9d
391fc59d
+46
+46
Documentation/devicetree/bindings/sound/cs42l52.txt
+46
Documentation/devicetree/bindings/sound/cs42l52.txt
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CS42L52 audio CODEC
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Required properties:
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- compatible : "cirrus,cs42l52"
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- reg : the I2C address of the device for I2C
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Optional properties:
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- cirrus,reset-gpio : GPIO controller's phandle and the number
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of the GPIO used to reset the codec.
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- cirrus,chgfreq-divisor : Values used to set the Charge Pump Frequency.
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Allowable values of 0x00 through 0x0F. These are raw values written to the
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register, not the actual frequency. The frequency is determined by the following.
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Frequency = (64xFs)/(N+2)
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N = chgfreq_val
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Fs = Sample Rate (variable)
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- cirrus,mica-differential-cfg : boolean, If present, then the MICA input is configured
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as a differential input. If not present then the MICA input is configured as
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Single-ended input. Single-ended mode allows for MIC1 or MIC2 muxing for input.
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- cirrus,micb-differential-cfg : boolean, If present, then the MICB input is configured
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as a differential input. If not present then the MICB input is configured as
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Single-ended input. Single-ended mode allows for MIC1 or MIC2 muxing for input.
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- cirrus,micbias-lvl: Set the output voltage level on the MICBIAS Pin
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0 = 0.5 x VA
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1 = 0.6 x VA
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2 = 0.7 x VA
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3 = 0.8 x VA
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4 = 0.83 x VA
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5 = 0.91 x VA
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Example:
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codec: codec@4a {
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compatible = "cirrus,cs42l52";
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reg = <0x4a>;
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reset-gpio = <&gpio 10 0>;
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cirrus,chgfreq-divisor = <0x05>;
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cirrus.mica-differential-cfg;
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cirrus,micbias-lvl = <5>;
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};