Hi,
On Tue, Apr 17, 2018 at 08:44:03PM -0700, Tony Lindgren wrote:
> * Aaro Koskinen <aaro.koskinen@xxxxxx> [180417 22:05]:
> > Hi,
> >
> > On Wed, Apr 18, 2018 at 12:20:43AM +0300, Aaro Koskinen wrote:
> > > When moving from 4.15 -> 4.16, I see long delays and spam from DRM in dmesg.
> > >
> > > Is this some known issue, or should I try to e.g. bisect it? FWIW, the same
> > > kernel binary works on N900.
> >
> > Apparently N950 display support got enabled in the DTS before it was actually
> > working. I did the following and the boot is as before:
> >
> > diff --git a/arch/arm/boot/dts/omap3-n950.dts b/arch/arm/boot/dts/omap3-n950.dts
> > index 2354e09343f3..aa757482d572 100644
> > --- a/arch/arm/boot/dts/omap3-n950.dts
> > +++ b/arch/arm/boot/dts/omap3-n950.dts
> > @@ -231,6 +231,7 @@
> > lcd0: display {
> > compatible = "nokia,himalaya", "panel-dsi-cm";
> > label = "lcd0";
> > + status = "disabled";
> >
> > pinctrl-names = "default";
> > pinctrl-0 = <&display_pins>;
> >
> > (Having in enabled in DTS will break my testing, as I want to use the
> > same kernel binary/configuration also for N900/N950/N9).
>
> Can you please reply with your Signed-off-by and I'll queue it
> as a fix. I don't think there's any other fix until at least
> the frame done interrupts are properly handled.
FWIW:
Acked-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxxxx>
-- Sebastian
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