Re: [PATCH v2 6/8] arm64: dts: renesas: add ulcb{-kf} Audio Graph Card2 dtsi MIX + TDM Split dtsi

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On Fri, Jan 13, 2023 at 3:04 AM Kuninori Morimoto
<kuninori.morimoto.gx@xxxxxxxxxxx> wrote:
> From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
>
> ALSA SoC has many type of Generic Audio Card driver (Simple Audio Card,
> Audio Graph Card, Audio Graph Card2), and Renesas/Kuninori Morimoto want
> to test these.
>
> Generic Audio Card driver had been requested on ALSA SoC.
> It has many type of device connection method, and historically,
> requested connection support range of generic driver have been
> upgraded.
>
> Upgrading connection support range itself was possible on generic
> driver, but could not implemented, because we need to keep compatibility
> on Device-Tree. This is one of the reason why we have many type of
> Generic Audio Card driver.
>
> ULCB/KF is good board to test these.
> Kuninori has been testing these Generic Audio Card driver by using his
> local patch to switching drivers. But it is good idea to upstream these
> from information sharing point of view, because DT setting is complex.
> It can be good sample for user. This patch is one of them.
>
> From normal user point of view who don't need to test the driver,
> it should keep as-is, nothing changed.
>
> This patch adds "Audio Graph Card2 + MIXer + TDM Split" DT setting file
> for ULCB/KF. Because it reach to subdevice maximum, it ignore HDMI.
> We can switch to use it if ulcb.dtsi / ulcb-kf.dtsi were updated.
>
> Because it needs "switching driver", not "add extra feature",
> it doesn't use Device-Tree overlay.
>
> Link: https://lore.kernel.org/r/875yeepxfw.wl-kuninori.morimoto.gx@xxxxxxxxxxx
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
i.e. will queue in renesas-devel for v6.3.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds



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