linux-kernel - Re: [PATCH v2 1/3] dt-bindings: sound: Add CS42L84 codec

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Message-ID: <20241021192632.GA965116-robh@kernel.org>
Date: Mon, 21 Oct 2024 14:26:32 -0500
From: Rob Herring <robh@...nel.org>
To: James Calligeros <jcalligeros99@...il.com>
Cc: Martin Povišer <povik+lin@...ebit.org>,
	David Rhodes <david.rhodes@...rus.com>,
	Richard Fitzgerald <rf@...nsource.cirrus.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
	asahi@...ts.linux.dev, linux-sound@...r.kernel.org,
	patches@...nsource.cirrus.com, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, Hector Martin <marcan@...can.st>,
	Neal Gompa <neal@...pa.dev>
Subject: Re: [PATCH v2 1/3] dt-bindings: sound: Add CS42L84 codec

On Sun, Oct 20, 2024 at 12:47:31AM +1000, James Calligeros wrote:
> From: Martin Povišer <povik+lin@...ebit.org>
> 
> CS42L84 is a headphone jack codec made by Cirrus Logic and seen in Apple
> computer models starting with 2021 Macbook Pros. It is not a publicly
> documented part. To a degree the part is similar to the public CS42L42.
> (The L84 superseded L83 seen in earlier Apple models, and the L83 was
> pretty much the same as L42.)

Why can't this be added to 
Documentation/devicetree/bindings/sound/cirrus,cs42l42.yaml?

I guess perhaps you don't know what the supplies look like? Do any of 
the custom properties apply?

> 
> Signed-off-by: Martin Povišer <povik+lin@...ebit.org>
> Signed-off-by: James Calligeros <jcalligeros99@...il.com>
> Reviewed-by: Neal Gompa <neal@...pa.dev>
> ---
>  .../bindings/sound/cirrus,cs42l84.yaml   | 56 +++++++++++++++++++++++++
>  MAINTAINERS                              |  1 +
>  2 files changed, 57 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/sound/cirrus,cs42l84.yaml b/Documentation/devicetree/bindings/sound/cirrus,cs42l84.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..7f8338e8ae369bc529ac3cf35041d5a7b9f3e6d1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/cirrus,cs42l84.yaml
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/cirrus,cs42l84.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Cirrus Logic CS42L84 audio CODEC
> +
> +maintainers:
> +  - Martin Povišer <povik+lin@...ebit.org>
> +
> +description: |

Don't need '|' if no formatting.

> +  The CS42L84 is a headphone jack codec made by Cirrus Logic and embedded
> +  in personal computers sold by Apple. It was first seen in 2021 Macbook
> +  Pro models. It has stereo DAC for playback, mono ADC for capture, and
> +  is somewhat similar to CS42L42 but with a different regmap.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - cirrus,cs42l84
> +
> +  reg:
> +    maxItems: 1
> +
> +  reset-gpios:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  '#sound-dai-cells':
> +    const: 0
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      jack_codec: codec@4b {
> +          compatible = "cirrus,cs42l84";
> +          reg = <0x4b>;
> +          reset-gpios = <&pinctrl_nub 4 GPIO_ACTIVE_LOW>;
> +          interrupts-extended = <&pinctrl_ap 180 IRQ_TYPE_LEVEL_LOW>;
> +          #sound-dai-cells = <0>;
> +      };
> +    };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index c1a2c296446c0724a0c6e70c845e5e5e1e693fd5..f5f85714dc4e8ca9c60b3f6963b2cec1ea33fdd0 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -2132,6 +2132,7 @@ L:	asahi@...ts.linux.dev
>  L:	linux-sound@...r.kernel.org
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/sound/adi,ssm3515.yaml
> +F:	Documentation/devicetree/bindings/sound/cirrus,cs42l84.yaml
>  F:	Documentation/devicetree/bindings/sound/apple,*
>  F:	sound/soc/apple/*
>  F:	sound/soc/codecs/cs42l83-i2c.c
> 
> -- 
> 2.47.0
>