drm/edid: Add 6 bpc quirk for BOE panel.

BOE panel (ID: 0x0771) that reports "DFP 1.x compliant TMDS".
But it's 6bpc panel only instead of 8 bpc.

Add panel ID to edid quirk list and set 6 bpc as default to
work around this issue.

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Cooper Chiou <cooper.chiou@intel.com>
Signed-off-by: Lee, Shawn C <shawn.c.lee@intel.com>>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1540792173-7288-1-git-send-email-shawn.c.lee@intel.com

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 3c9fc99648b7..08821dfa3327 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -119,6 +119,9 @@ static const struct edid_quirk {
         /* SDC panel of Lenovo B50-80 reports 8 bpc, but is a 6 bpc panel */
         { "SDC", 0x3652, EDID_QUIRK_FORCE_6BPC },
 
+        /* BOE model 0x0771 reports 8 bpc, but is a 6 bpc panel */
+        { "BOE", 0x0771, EDID_QUIRK_FORCE_6BPC },
+
         /* Belinea 10 15 55 */
         { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 },
         { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },