linux-kernel - Re: [PATCH v3 7/7] arm64: dts: allwinner: pinephone: Set audio card name

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Date:   Mon, 24 May 2021 14:08:41 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Samuel Holland <samuel@...lland.org>
Cc:     Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Arnaud Ferraris <arnaud.ferraris@...labora.com>
Subject: Re: [PATCH v3 7/7] arm64: dts: allwinner: pinephone: Set audio card
 name

On Sun, May 09, 2021 at 08:54:36PM -0500, Samuel Holland wrote:
> On 5/7/21 3:09 AM, Maxime Ripard wrote:
> > Hi,
> > 
> > On Thu, Apr 29, 2021 at 10:58:59PM -0500, Samuel Holland wrote:
> >> From: Arnaud Ferraris <arnaud.ferraris@...labora.com>
> >>
> >> Add the "PinePhone" name to the sound card: this will make
> >> upstreaming an ALSA UCM config easier as we can use a unique name.
> >>
> >> It also avoids an issue where the default card name is truncated.
> >>
> >> Signed-off-by: Arnaud Ferraris <arnaud.ferraris@...labora.com>
> >> [Samuel: Split out change, updated commit message]
> >> Signed-off-by: Samuel Holland <samuel@...lland.org>
> >> ---
> >>  arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi | 1 +
> >>  1 file changed, 1 insertion(+)
> >>
> >> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
> >> index 51cbfdc12936..02712f85f6bd 100644
> >> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
g> >> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
> >> @@ -433,6 +433,7 @@ &reg_rtc_ldo {
> >>  
> >>  &sound {
> >>  	status = "okay";
> >> +	simple-audio-card,name = "PinePhone";
> >>  	simple-audio-card,aux-devs = <&codec_analog>, <&speaker_amp>;
> >>  	simple-audio-card,widgets = "Microphone", "Headset Microphone",
> >>  				    "Microphone", "Internal Microphone",
> > 
> > Isn't that reported to the userspace? I'm not sure we can just change it
> > without breaking it.
> 
> Yes, this is seen by userspace.
> 
> Ideally, we would add this property with a unique value when enabling
> audio for any board, but as you mention, it would be a breaking change
> to add those properties now.
> 
> In practice, all distributions supporting the PinePhone are already
> carrying this patch, because the ALSA setup needed for the PinePhone is
> very different from most other boards. So it would be similarly breaking
> for them (and their users) to drop this patch.

Ack :)

Since no one else complained, I merged this patch too

Thanks!
Maxime

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