linux-kernel - Re: [RESEND PATCH v2 1/5] dt-bindings: sound: Add jack-type property to sun8i-a33-codec

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Date: Tue, 27 Feb 2024 00:57:08 +0100
From: Ondřej Jirman <megi@....cz>
To: Rob Herring <robh@...nel.org>
Cc: linux-kernel@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>, 
	Conor Dooley <conor+dt@...nel.org>, Mark Brown <broonie@...nel.org>, 
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, Chen-Yu Tsai <wens@...e.org>, 
	Jernej Skrabec <jernej.skrabec@...il.com>, Samuel Holland <samuel@...lland.org>, 
	Arnaud Ferraris <arnaud.ferraris@...labora.com>, linux-sound@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org, linux-sunxi@...ts.linux.dev
Subject: Re: [RESEND PATCH v2 1/5] dt-bindings: sound: Add jack-type property
 to sun8i-a33-codec

On Mon, Feb 26, 2024 at 01:47:27PM -0600, Rob Herring wrote:
> On Sat, Feb 24, 2024 at 02:54:54PM +0100, Ondřej Jirman wrote:
> > From: Ondrej Jirman <megi@....cz>
> > 
> > The codec driver needs to know what jack connector it is connected to
> > on the board. Add proprty to describe the type of connector.
> > 
> > Signed-off-by: Ondrej Jirman <megi@....cz>
> > ---
> >  .../bindings/sound/allwinner,sun8i-a33-codec.yaml        | 9 +++++++++
> >  1 file changed, 9 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml b/Documentation/devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml
> > index 63eadc4200ac..399fc00ad3f4 100644
> > --- a/Documentation/devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml
> > +++ b/Documentation/devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml
> > @@ -44,6 +44,15 @@ properties:
> >        - const: bus
> >        - const: mod
> >  
> > +  jack-type:
> 
> I'm all for a generic property name, but it needs to be documented 
> somewhere common. Perhaps dai-common.yaml.
> 
> I'm sure there is some prior art here to consider as well.

There's only a mention in the code. But there's no use of similar property
on the codec nodes.

https://elixir.bootlin.com/linux/latest/source/sound/soc/soc-component.c#L288

/**
 * snd_soc_component_get_jack_type
 * @component: COMPONENTs
 *
 * Returns the jack type of the component
 * This can either be the supported type or one read from
 * devicetree with the property: jack-type.
 */

This is part of a component, so maybe in sound/component-common.yaml ?

Kind regards,
	o.

> Rob