Re: [PATCH v3 12/12] arm64: dts: h3ulcb: Sound SSI support

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Hi Vladimir

> This supports SSI sound for H3ULCB board.
> SSI DMA mode used. CS2000 used as AUDIO_CLK_B.
> 
> Signed-off-by: Vladimir Barinov <vladimir.barinov@xxxxxxxxxxxxxxxxxx>
> ---

Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>

> +	audio_clkout: audio_clkout {
> +		compatible = "fixed-clock";
> +		#clock-cells = <0>;
> +		clock-frequency = <11289600>;
> +	};

I think having commont for AUDIO_CLKOUT is better for user, like Salvator-X.
This "audio_clkout" is dummy. Actually, we don't need this dummy clock,
and we should use "<&rcar_sound 0>" as AUDIO_CLKOUT,
like AUDIO_CLKOUT3 as "<&rcar_sound 3>" which is used on ak4613. 
But Salvator-X and this ULCB board has very complex connection,
especially around CS2000.
This means cs2000 requests rcar_sound, and rcar_sound requests cs2000.
This audio_clkout exist to avoid probe dead-lock.
This is the reason why audio_clkout and rcar_sound::clock-frequency
has same value.

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