4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> commit 25da75043f8690fd083878447c91f289dfb63b87 upstream. Another panel that reports "DFP 1.x compliant TMDS" but it supports 6bpc instead of 8 bpc. Apply 6 bpc quirk for the panel to fix it. BugLink: https://bugs.launchpad.net/bugs/1788308 Cc: <stable@xxxxxxxxxxxxxxx> # v4.8+ Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20180823055332.7723-1-kai.heng.feng@xxxxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/drm_edid.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -114,6 +114,9 @@ static const struct edid_quirk { /* CPT panel of Asus UX303LA reports 8 bpc, but is a 6 bpc panel */ { "CPT", 0x17df, EDID_QUIRK_FORCE_6BPC }, + /* SDC panel of Lenovo B50-80 reports 8 bpc, but is a 6 bpc panel */ + { "SDC", 0x3652, EDID_QUIRK_FORCE_6BPC }, + /* Belinea 10 15 55 */ { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 }, { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },
