[PATCH] drm/exynos: fimd: fix trigger mode change regression

[Marc Zyngier]

On 2016-06-01 06:53, Inki Dae wrote:
> This patch fixes a regression that Display panel doesn't work
> since HW trigger mode was supported.
>
> The trigger mode should be changed on PSR(Panel Self Refresh)
> mode of Panel device according to HW guy's saying. However,
> with previous HW trigger support, trigger mode could been changed
> in normal mode of Panel device.
>
> So this patch makes sure to change the trigger mode after power off
> and on again. Later we need to add PSR relevant codes instead.

I'm afraid this patch doesn't fix the regression I'm seeing on my 
Exynos5250 Chromebook.

I found out that using the 4.6 device tree allows the display to 
function correctly (at least for a while), just enough to see it dying 
before reaching userspace (and it scrolls up way to quickly for me to 
read it). Adding printk_delay results in a hanging system.

Can someone with a servo-board investigate this? I'll try to bisect it 
further, but an actual backtrace would help.

Thanks,

         M.
-- 
Fast, cheap, reliable. Pick two.