Re: [PATCH v8 2/6] ASoC: rockchip-max98090: Support usage with and without HDMI

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On Fri, Oct 25, 2019 at 09:30:03PM +0800, Cheng-Yi Chiang wrote:
> There will be multiple boards sharing this machine driver.
> Use compatible string to specify the use case.
> 
> "rockchip,rockchip-audio-max98090" for max98090-only.
> "rockchip,rockchip-audio-hdmi" for HDMI-only
> "rockchip,rockchip-audio-max98090-hdmi" for max98090 plus
> 
> Move these properties to optional because they are not needed for
> HDMI-only use case.
> "rockchip,audio-codec": The phandle of the MAX98090 audio codec
> "rockchip,headset-codec": The phandle of Ext chip for jack detection
> 
> The machine driver change will add support for HDMI codec in
> rockchip-max98090.
> Add one optional property "rockchip,hdmi-codec" to let user specify HDMI
> device node in DTS so machine driver can find hdmi-codec device node for
> codec DAI.

Why not just use the presence of rockchip,hdmi-codec to enable HDMI or 
not. Maybe you still add rockchip,rockchip-audio-hdmi for HDMI only.

Really, the same should have been done for which codec is used too, but 
I guess someone wanted 2 machine drivers.

> 
> Signed-off-by: Cheng-Yi Chiang <cychiang@xxxxxxxxxxxx>
> ---
>  .../bindings/sound/rockchip-max98090.txt      | 38 +++++++++++++++++--
>  1 file changed, 35 insertions(+), 3 deletions(-)
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