On 02/07/2019 18:47, Olivier Moysan wrote:
> As stated in SiL9022/24 datasheet, master clock is not required for I2S.
> Make mclk property optional in DT bindings.
>
> Fixes: 3f18021f43a3 ("dt-bindings: display: sii902x: Add HDMI audio bindings")
>
> Signed-off-by: Olivier Moysan <olivier.moysan@xxxxxx>
Looking the specs again it looks like the mclk is requred for sii9020,
but not for sii9022 and sii9024.
So I guess it is fine to accept the configurations without the mclk.
Reviewed-by: Jyri Sarha <jsarha@xxxxxx>
> ---
> Documentation/devicetree/bindings/display/bridge/sii902x.txt | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/display/bridge/sii902x.txt b/Documentation/devicetree/bindings/display/bridge/sii902x.txt
> index 2df44b7d3821..6e14e087c0d0 100644
> --- a/Documentation/devicetree/bindings/display/bridge/sii902x.txt
> +++ b/Documentation/devicetree/bindings/display/bridge/sii902x.txt
> @@ -26,9 +26,8 @@ Optional properties:
> - clocks: phandle and clock specifier for each clock listed in
> the clock-names property
> - clock-names: "mclk"
> - Describes SII902x MCLK input. MCLK is used to produce
> - HDMI audio CTS values. This property is required if
> - "#sound-dai-cells"-property is present. This property follows
> + Describes SII902x MCLK input. MCLK can be used to produce
> + HDMI audio CTS values. This property follows
> Documentation/devicetree/bindings/clock/clock-bindings.txt
> consumer binding.
>
>
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