Hi Sylwester,

2018년 03월 08일 02:11에 Sylwester Nawrocki 이(가) 쓴 글:
> The #sound-dai-cells DT property is required to describe link between
> the HDMI IP block and the SoC's audio subsystem.
> 
> Signed-off-by: Sylwester Nawrocki <s.nawro...@samsung.com>
> ---
>  Documentation/devicetree/bindings/display/exynos/exynos_hdmi.txt | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/exynos/exynos_hdmi.txt 
> b/Documentation/devicetree/bindings/display/exynos/exynos_hdmi.txt
> index 8715ff06c457..6b2a526ec586 100644
> --- a/Documentation/devicetree/bindings/display/exynos/exynos_hdmi.txt
> +++ b/Documentation/devicetree/bindings/display/exynos/exynos_hdmi.txt
> @@ -50,6 +50,9 @@ Required properties for Exynos 5433:
>  - clock-names: aliases for above clock specfiers.
>  - samsung,sysreg: handle to syscon used to control the system registers.
>  
> +Optional properties for Exynos 4210, 4212, 5420 and 5433:
> + - #sound-dai-cells: should be 0.
> +

Just trivial question. 'sound-dai-cells' property could affect hdmi driver? I 
looked into HDMI codec driver but I didn't find relevat code.
I mean that if this property never affect HDMI driver then this property would 
be a dead thing even through this can be declared optionally.

Thanks,
Inki Dae

>  Example:
>  
>       hdmi {
> 
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