Re: [PATCH 3/3] ARM: dts: sun8i: h3: beelink-x2: Disable DW-HDMI CEC

From: Laurent Pinchart
Date: Sun Apr 16 2023 - 09:47:46 EST


On Sun, Apr 16, 2023 at 03:31:56PM +0200, Jernej Škrabec wrote:
> Dne nedelja, 16. april 2023 ob 15:25:31 CEST je Laurent Pinchart napisal(a):
> > Hi Jernej,
> >
> > Thank you for the patch.
> >
> > On Sat, Apr 15, 2023 at 12:46:13PM +0200, Jernej Skrabec wrote:
> > > Beelink X2 uses software implementation of CEC even though DW-HDMI has
> > > working hardware implementation.
> >
> > Why ? The reason should be explained in the commit message.
>
> Maybe I should reword this differently. It uses software implementation through
> GPIO pin. Dedicated DW-HDMI CEC pin is left unconnected.

That's a very good reason :-) I'm then fine with this patch, with a
reworded commit message. The DT bindings should be updated accordingly
as well, to explain the use case.

> > > Disable unused DW-HDMI CEC.
> > >
> > > Signed-off-by: Jernej Skrabec <jernej.skrabec@xxxxxxxxx>
> > > ---
> > >
> > > arch/arm/boot/dts/sun8i-h3-beelink-x2.dts | 1 +
> > > 1 file changed, 1 insertion(+)
> > >
> > > diff --git a/arch/arm/boot/dts/sun8i-h3-beelink-x2.dts
> > > b/arch/arm/boot/dts/sun8i-h3-beelink-x2.dts index
> > > a6d38ecee141..38f40d69e5c5 100644
> > > --- a/arch/arm/boot/dts/sun8i-h3-beelink-x2.dts
> > > +++ b/arch/arm/boot/dts/sun8i-h3-beelink-x2.dts
> > > @@ -150,6 +150,7 @@ &emac {
> > > };
> > >
> > > &hdmi {
> > > + snps,disable-cec;
> > > status = "okay";
> > > };

--
Regards,

Laurent Pinchart