Re: [PATCH 4/7] arm64: dts: allwinner: a64: Add HDMI audio

["Clément Péron" <peron.clem@gmail.com>]

Hi Maxime,

On Tue, 28 Apr 2020 at 10:00, Maxime Ripard <maxime@cerno.tech> wrote:
>
> On Sun, Apr 26, 2020 at 02:04:39PM +0200, Clément Péron wrote:
> > From: Marcus Cooper <codekipper@gmail.com>
> >
> > Add a simple-soundcard to link audio between HDMI and I2S.
> >
> > Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
> > Signed-off-by: Marcus Cooper <codekipper@gmail.com>
> > Signed-off-by: Clément Péron <peron.clem@gmail.com>
> > ---
> >  arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 21 +++++++++++++++++++
> >  1 file changed, 21 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> > index e56e1e3d4b73..08ab6b5e72a5 100644
> > --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> > @@ -102,6 +102,25 @@
> >               status = "disabled";
> >       };
> >
> > +     hdmi_sound: hdmi-sound {
> > +             compatible = "simple-audio-card";
> > +             simple-audio-card,format = "i2s";
> > +             simple-audio-card,name = "allwinner,hdmi";
>
> I'm not sure what the usual card name should be like though. I would assume that
> this should be something specific enough so that you're able to differentiate
> between boards / SoC so that the userspace can choose a different configuration
> based on it?

I really don't know what we should use here,
I just have a look at other SoC:
rk3328: "HDMI"
rk3399: "hdmi-sound"
r8a774c0-cat874: "CAT874 HDMI sound"

But maybe it's time to introduce proper name:
What about :
sun50i-a64-hdmi
sun50i-h6-hdmi
How should we handle this with h3 / h5 ?
settings the simple-audio-card,name in each SoC dts?
Or using sun50i-h3-hdmi as they are both identical?

Regards,
Clement


>
> If so, it's really too generic.
>
> Maxime