linux-kernel - Re: [PATCH v4 09/22] arm64: dts: allwinner: h6: Add HDMI audio node

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Message-ID: <CAJiuCcfz9A_Vmzq=s3LK2kGB_1tZPkC9Ux+Brdocp9py0fovAg@mail.gmail.com>
Date:   Mon, 21 Sep 2020 19:23:49 +0200
From:   Clément Péron <peron.clem@...il.com>
To:     Maxime Ripard <maxime@...no.tech>
Cc:     Chen-Yu Tsai <wens@...e.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Marcus Cooper <codekipper@...il.com>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [PATCH v4 09/22] arm64: dts: allwinner: h6: Add HDMI audio node

Hi Maxime,

On Mon, 21 Sep 2020 at 15:59, Maxime Ripard <maxime@...no.tech> wrote:
>
> On Mon, Sep 21, 2020 at 12:27:18PM +0200, Clément Péron wrote:
> > From: Jernej Skrabec <jernej.skrabec@...l.net>
> >
> > Add a simple-soundcard to link audio between HDMI and I2S.
> >
> > Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>
> > Signed-off-by: Marcus Cooper <codekipper@...il.com>
> > Signed-off-by: Clément Péron <peron.clem@...il.com>
> > ---
> >  arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 33 ++++++++++++++++++++
> >  1 file changed, 33 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> > index 28c77d6872f6..a8853ee7885a 100644
> > --- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> > +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> > @@ -67,6 +67,25 @@ de: display-engine {
> >               status = "disabled";
> >       };
> >
> > +     hdmi_sound: hdmi-sound {
> > +             compatible = "simple-audio-card";
> > +             simple-audio-card,format = "i2s";
> > +             simple-audio-card,name = "sun50i-h6-hdmi";
> > +             simple-audio-card,mclk-fs = <128>;
> > +             simple-audio-card,frame-inversion;
> > +             status = "disabled";
> > +
> > +             simple-audio-card,codec {
> > +                     sound-dai = <&hdmi>;
> > +             };
> > +
> > +             simple-audio-card,cpu {
> > +                     sound-dai = <&i2s1>;
> > +                     dai-tdm-slot-num = <2>;
> > +                     dai-tdm-slot-width = <32>;
>
> It looks weird to have both some TDM setup here, and yet the format in
> i2s?

Yes, I agree I will check if it's really needed.

Clement

>
> Maxime