[PATCHv2 7/7] drm/omap: hdmi4: fix use of uninitialized var

[Tony Lindgren]

* Tomi Valkeinen <tomi.valkeinen at ti.com> [191008 14:17]:
> On 08/10/2019 17:13, Tony Lindgren wrote:
> > * Tomi Valkeinen <tomi.valkeinen at ti.com> [190930 10:38]:
> > > If use_mclk is false, mclk_mode is written to a register without
> > > initialization. This doesn't cause any ill effects as the written value
> > > is not used when use_mclk is false.
> > > 
> > > To fix this, write use_mclk only when use_mclk is true.
> > 
> > Hey nice catch. Based on a quick test looks like this fixes an
> > issue where power consumption stays higher after using HDMI.
> > 
> > Would be nice to have merged in the v5.4-rc series:
> > 
> > Tested-by: Tony Lindgren <tony at atomide.com>
> 
> Really? Ok, well, then it was a good random find =).

Yeah so it seems :) Earlier I thought there's still some
clkctrl setting wrong after using HDMI, but did not see
anything diffing the clkctrl registers before and after
and gave up.

> I did already push this to drm-misc-next, as I thought it does not have any
> real effect. I'll check if it's ok to push to drm-misc-fixes too, with Cc
> stable.

OK great thanks.

Tony