On Thu, May 2, 2024 at 10:47 PM Conor Dooley <co...@kernel.org> wrote: > > On Thu, May 02, 2024 at 09:03:31AM +0000, Hsin-Te Yuan wrote: > > Add a perporty to indicate whether anx7625 should shift the first audio > > data bit. The default TDM setting is to shift the first audio data bit. > > > > Signed-off-by: Hsin-Te Yuan <yuanhsi...@chromium.org> > > --- > > .../devicetree/bindings/display/bridge/analogix,anx7625.yaml | 4 > > ++++ > > 1 file changed, 4 insertions(+) > > > > diff --git > > a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml > > b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml > > index a1ed1004651b9..915d5d54a2160 100644 > > --- a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml > > +++ b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml > > @@ -82,6 +82,10 @@ properties: > > type: boolean > > description: let the driver enable audio HDMI codec function or not. > > > > + no-shift-audio-data: > > + type: boolean > > + description: Disable the first audio data bit shift in the TDM > > settings. > > This just looks like software policy, since there's no mention in the > commit message or description as to what property of the hardware causes > this to be required. Can you please explain why this property is needed? > > You're also missing a vendor prefix. > > Thanks, > Conor. > > > + > > aux-bus: > > $ref: /schemas/display/dp-aux-bus.yaml# > > > > > > -- > > 2.45.0.rc1.225.g2a3ae87e7f-goog > >
Sorry, I found this feature in the datasheet originally, but after deeper investigation, it seems that this feature should be used to support i2s dsp mode b instead of being used this way. Note that the difference between i2s dsp mode a and b is whether or not to shift the audio data by 1 clock cycle. Regards, Hsin-Te
