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    SubjectRe: [PATCH 13/16] arm64: dts: allwinner: a64: Add HDMI audio
    On Sat, Jul 04, 2020 at 01:38:59PM +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 c662f6a170ce..6a321fdc8e90 100644
    > --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
    > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
    > @@ -102,6 +102,25 @@ de: display-engine {
    > status = "disabled";
    > };
    >
    > + hdmi_sound: hdmi-sound {
    > + compatible = "simple-audio-card";
    > + simple-audio-card,format = "i2s";
    > + simple-audio-card,name = "sun50i-a64-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 = <&i2s2>;
    > + dai-tdm-slot-num = <2>;
    > + dai-tdm-slot-width = <32>;
    > + };
    > + };
    > +
    > osc24M: osc24M_clk {
    > #clock-cells = <0>;
    > compatible = "fixed-clock";
    > @@ -856,6 +875,7 @@ i2s2: i2s@1c22800 {
    > resets = <&ccu RST_BUS_I2S2>;
    > dma-names = "tx";
    > dmas = <&dma 27>;
    > + allwinner,playback-channels = <8>;

    This isn't documented anywhere

    Maxime
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