Re: [PATCH] drm/i915/dp: Add dpcd link_rate quirk for Apple 15" MBP 2017 (v2)

2020-03-05 Thread Jani Nikula
On Thu, 05 Mar 2020, Jani Nikula wrote: > On Thu, 05 Mar 2020, Mario Kleiner wrote: >> This fixes a problem found on the MacBookPro 2017 Retina panel. >> >> The panel reports 10 bpc color depth in its EDID, and the >> firmware chooses link settings at boot which support enough >> bandwidth for

Re: [PATCH] drm/i915/dp: Add dpcd link_rate quirk for Apple 15" MBP 2017 (v2)

2020-03-05 Thread Jani Nikula
On Thu, 05 Mar 2020, Mario Kleiner wrote: > This fixes a problem found on the MacBookPro 2017 Retina panel. > > The panel reports 10 bpc color depth in its EDID, and the > firmware chooses link settings at boot which support enough > bandwidth for 10 bpc (324000 kbit/sec = multiplier 0xc), > but

[PATCH] drm/i915/dp: Add dpcd link_rate quirk for Apple 15" MBP 2017 (v2)

2020-03-05 Thread Mario Kleiner
This fixes a problem found on the MacBookPro 2017 Retina panel. The panel reports 10 bpc color depth in its EDID, and the firmware chooses link settings at boot which support enough bandwidth for 10 bpc (324000 kbit/sec = multiplier 0xc), but the DP_MAX_LINK_RATE dpcd register only reports 2.7