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Commit 06998a75 authored by Kai-Heng Feng's avatar Kai-Heng Feng Committed by Daniel Vetter
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drm/edid: Add 6 bpc quirk for CPT panel in Asus UX303LA 

Similar to commit e10aec65 ("drm/edid: Add 6 bpc quirk for display
AEO model 0."), the EDID reports "DFP 1.x compliant TMDS" but it support
6bpc instead of 8 bpc.

Hence, use 6 bpc quirk for this panel.

Fixes: 196f954e ("drm/i915/dp: Revert "drm/i915/dp: fall back to 18 bpp when sink capability is unknown"")
BugLink: https://bugs.launchpad.net/bugs/1749420


Signed-off-by: default avatarKai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: default avatarMario Kleiner <mario.kleiner.de@gmail.com>
Cc: <stable@vger.kernel.org> # v4.8+
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180218085359.7817-1-kai.heng.feng@canonical.com
parent aa0aad57

drivers/gpu/drm/drm_edid.c

+3 −0
Original line number Diff line number Diff line
@@ -113,6 +113,9 @@ static const struct edid_quirk { 
	/* AEO model 0 reports 8 bpc, but is a 6 bpc panel */

	{ "AEO", 0, EDID_QUIRK_FORCE_6BPC },



	/* CPT panel of Asus UX303LA reports 8 bpc, but is a 6 bpc panel */

	{ "CPT", 0x17df, EDID_QUIRK_FORCE_6BPC },



	/* Belinea 10 15 55 */

	{ "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },

	{ "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },