[Intel-gfx] [PATCH 0/4] drm/i915/intel_dsi: Read back and use pclk set by the GOP

Hans de Goede hdegoede at redhat.com
Fri Jun 29 11:35:06 UTC 2018


Hi,

On 19-06-18 22:18, Hans de Goede wrote:
> Hi All,
> 
> This patch-set is the result of the work I've been doing recently to
> give people a smooth "flickerfree" boot experience where the display
> keeps displaying the logo put there by the firmware until it smoothly
> fades into the Linux GUI (e.g. gdm).
> 
> While testing this on some BYT/CHT devices I noticed the screen going
> black for 1 second or so, because the first modeset was not a fast
> modeset despite passing i915.fastboot=1 on the kernel commandline.
> 
> This is caused by the GOP and the i915 code differing in what they
> think the DSI pclk should be. This patch-set fixes this by reading
> back the pclk set by the GOP and if it is reasonably close to the
> clk calculated by the i915 code, using the GOP set pclk.

Ping? A review of this series would be appreciated.

Regards,

Hans



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