linux-kernel - Re: [PATCH] dt-bindings: sound: tlv320aic3x: Convert to dtschema

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Date:   Wed, 3 Aug 2022 10:11:27 -0500
From:   Jai Luthra <j-luthra@...com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
CC:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, <alsa-devel@...a-project.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dt-bindings: sound: tlv320aic3x: Convert to dtschema

Hi Krzysztof,

Thanks for the review.

On 08:29-20220803, Krzysztof Kozlowski wrote:
> On 02/08/2022 23:48, Jai Luthra wrote:
> > Convert bindings for TI's TLV320AIC3x audio codecs to dtschema.
> > 
> > Signed-off-by: Jai Luthra <j-luthra@...com>
> > ---
> 
> 
> Thank you for your patch. There is something to discuss/improve.
> 
> > diff --git a/Documentation/devicetree/bindings/sound/tlv320aic3x.yaml b/Documentation/devicetree/bindings/sound/tlv320aic3x.yaml
> > new file mode 100644
> > index 000000000000..6efb1d459543
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/sound/tlv320aic3x.yaml
> > @@ -0,0 +1,145 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/sound/tlv320aic3x.yaml#
> 
> Filename with vendor prefix, so ti,tlv320aic3x.yaml
> 
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Texas Instruments TLV320AIC3x Codec Device Tree Bindings
> 
> s/Device Tree Bindings//
> 
> > +
> > +maintainers:
> > +  - Jai Luthra <j-luthra@...com>
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - ti,tlv320aic3x
> > +      - ti,tlv320aic33
> > +      - ti,tlv320aic3007
> > +      - ti,tlv320aic3106
> > +      - ti,tlv320aic3104
> > +
> > +  reg:
> > +    maxItems: 1
> > +    description: i2c slave address
> 
> Skip description.
> 
> > +
> > +  reset-gpios:
> > +    maxItems: 1
> > +    description:
> > +      GPIO specification for the active low RESET input.
> > +
> > +  ai3x-gpio-func:
> > +    description: AIC3X_GPIO1 & AIC3X_GPIO2 Functionality
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    minItems: 3
> 
> uint32-array. Old bindings say about two items only. Mention any changes
> to binding in cover letter.

My bad, that should still be 2 items.

> 
> > +    maxItems: 3
> > +
> 
> You lost gpio-reset property. Also not explained in commit msg.
> 
> > +  ai3x-micbias-vg:
> > +    description: MicBias required voltage. If node is omitted then MicBias is powered down.
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    oneOf:
> > +      - const: 1
> > +        description: MICBIAS output is powered to 2.0V.
> > +      - const: 2
> > +        description: MICBIAS output is powered to 2.5V.
> > +      - const: 3
> > +        description: MICBIAS output is connected to AVDD.
> > +
> > +  ai3x-ocmv:
> > +    description: Output Common-Mode Voltage selection.
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    oneOf:
> > +      - const: 0
> > +        description: 1.35V
> > +      - const: 1
> > +        description: 1.5V
> > +      - const: 2
> > +        description: 1.65V
> > +      - const: 3
> > +        description: 1.8V
> > +
> > +  AVDD-supply:
> > +    description: Analog DAC voltage.
> 
> New properties?
> 

These regulator properties were mentioned in the txt as well.

> > +
> > +  IOVDD-supply:
> > +    description: I/O voltage.
> > +
> > +  DRVDD-supply:
> > +    description: ADC analog and output driver voltage.
> > +
> > +  DVDD-supply:
> > +    description: Digital core voltage.
> > +
> > +  '#sound-dai-cells':
> > +    const: 0
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +
> > +#The pins can be used in referring sound node's audio-routing property.
> > +
> > +#CODEC output pins:
> > +  # LLOUT
> > +  # RLOUT
> > +  # MONO_LOUT
> > +  # HPLOUT
> > +  # HPROUT
> > +  # HPLCOM
> > +  # HPRCOM
> > +
> > +#CODEC input pins for TLV320AIC3104:
> > +  # MIC2L
> > +  # MIC2R
> > +  # LINE1L
> > +  # LINE1R
> > +
> > +#CODEC input pins for other compatible codecs:
> > +  # MIC3L
> > +  # MIC3R
> > +  # LINE1L
> > +  # LINE2L
> > +  # LINE1R
> > +  # LINE2R
> 
> All this goes to top level description.
> 
> 
> Best regards,
> Krzysztof

Fixed rest of the comments in v2.

Thanks,
Jai