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943293232c
The property used to specify a GPIO intended for reset is "reset-gpios", but this binding uses "gpio-reset". It is not compatible with newer methods used to fetch GPIO pins and to prevent the spread of this error to other bindings let's rename to be more standard. We also standardize the pin as active-low, different device trees have marked the GPIO different ways, luckily the driver currently uses the low-level GPIO set function which does not respect the active-low flag, but future changes may change this. This is an active-low reset, mark it as such. Lastly, add an example of use for this property. [Rewrote title & first paragraph for clarity & accuracy -- broonie] Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
81 lines
1.8 KiB
Plaintext
81 lines
1.8 KiB
Plaintext
Texas Instruments - tlv320aic3x Codec module
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The tlv320aic3x serial control bus communicates through I2C protocols
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Required properties:
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- compatible - "string" - One of:
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"ti,tlv320aic3x" - Generic TLV320AIC3x device
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"ti,tlv320aic33" - TLV320AIC33
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"ti,tlv320aic3007" - TLV320AIC3007
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"ti,tlv320aic3106" - TLV320AIC3106
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"ti,tlv320aic3104" - TLV320AIC3104
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- reg - <int> - I2C slave address
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Optional properties:
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- reset-gpios - GPIO specification for the active low RESET input.
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- ai3x-gpio-func - <array of 2 int> - AIC3X_GPIO1 & AIC3X_GPIO2 Functionality
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- Not supported on tlv320aic3104
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- ai3x-micbias-vg - MicBias Voltage required.
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1 - MICBIAS output is powered to 2.0V,
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2 - MICBIAS output is powered to 2.5V,
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3 - MICBIAS output is connected to AVDD,
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If this node is not mentioned or if the value is incorrect, then MicBias
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is powered down.
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- ai3x-ocmv - Output Common-Mode Voltage selection:
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0 - 1.35V,
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1 - 1.5V,
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2 - 1.65V,
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3 - 1.8V
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- AVDD-supply, IOVDD-supply, DRVDD-supply, DVDD-supply : power supplies for the
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device as covered in Documentation/devicetree/bindings/regulator/regulator.txt
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Deprecated properties:
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- gpio-reset - gpio pin number used for codec reset
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CODEC output pins:
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* LLOUT
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* RLOUT
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* MONO_LOUT
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* HPLOUT
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* HPROUT
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* HPLCOM
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* HPRCOM
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CODEC input pins for TLV320AIC3104:
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* MIC2L
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* MIC2R
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* LINE1L
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* LINE1R
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CODEC input pins for other compatible codecs:
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* MIC3L
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* MIC3R
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* LINE1L
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* LINE2L
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* LINE1R
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* LINE2R
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The pins can be used in referring sound node's audio-routing property.
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Example:
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#include <dt-bindings/gpio/gpio.h>
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tlv320aic3x: tlv320aic3x@1b {
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compatible = "ti,tlv320aic3x";
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reg = <0x1b>;
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reset-gpios = <&gpio1 17 GPIO_ACTIVE_LOW>;
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AVDD-supply = <®ulator>;
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IOVDD-supply = <®ulator>;
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DRVDD-supply = <®ulator>;
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DVDD-supply = <®ulator>;
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};
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