APPLIED/cmnt Re: [PATCH 0/1][SRU][OEM-5.6] UBUNTU: SAUCE: Fix brightness control on BOE 2270 panel

[Timo Aaltonen]

On 20.11.2020 11.26, Aaron Ma wrote:
> BugLink: https://bugs.launchpad.net/bugs/1904991
> 
> [Impact]
> BOE 2270 panel is used by several models of ThinkPads.
> This brightness can not be controlled by default PWM.
> 
> [Fix]
> The panel claims both PWM and AUX supports.
> But actually PWM works on SDR mode, AUX works on HDR mode.
> Intel i915 driver got a new SDR support to use PWM by maintainer, still
> in upstream review.
> To fix this on certain project, use a quirk first to fix this.
> The maintainer's fix can be backported in future.
> 
> [Test Case]
> Backlight brightness can be changed.
> 
> [Regression Potential]
> Low,
> Fix for specific panel ID, no effects for others.
> Since this is temporary quirk, it will go to oem-5.6 only.
> 
> Aaron Ma (1):
>    UBUNTU: SAUCE: drm/i915: Force DPCD backlight mode for BOE 2270 panel
> 
>   drivers/gpu/drm/drm_dp_helper.c | 1 +
>   1 file changed, 1 insertion(+)
> 

applied to oem-5.6, but we need this in 5.8 too or upgrades would regress



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