[PATCH 0/1] drm/i915: Enable fastset by default, except on initial modeset

[Rodrigo Vivi]

On Mon, Dec 17, 2018 at 03:23:14PM +0100, Hans de Goede wrote:
> Hi All,
> 
> As discussed a while ago, I would like to see us enable fastboot by
> default, starting with Skylake / GEN9 and newer hardware, so that we can
> avoid an unnecessary modeset at boot and move to a truely flickerfree boot.
> 
> During our previous discussion about this Maarten mentioned that a first
> step would be to get this patch from him upstream. So I'm hereby
> resubmitting it, with a small fix. Hopefully the CI will like it better
> this time (if not we will need to investigate) and once this passes CI
> I hope this can be reviewed quickly and we can get this upstream.

I honestly believe the first step is to make sure FBC, PSR, DRRS features
gets enabled somehow with fastboot. Maybe DSC as well?!
Right now as I can remember FBC, PSR, and DRRS will get disabled if fastboot
is used because we just enable those when enabling the pipe.

> 
> I will also be sending out a follow-up patch which actually makes fastboot
> the default on GEN9 and newer, I will mark that as RFC for now since based
> on our previous discussion this patch should be landed first.
> 
> Regards,
> 
> Hans
> 
>