openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/amd/display: validate extended dongle caps 

[why]
Some dongle doesn't have a valid extended dongle caps,
but we still set the extended dongle caps to be valid.
This causes validation fails for all timing.

[how]
If no dp_hdmi_max_pixel_clk is provided,
don't use extended dongle caps.

Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Abdoulaye Berthe <Abdoulaye.Berthe@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wenjing Liu 2018-12-05 12:14:45 -05:00 committed by Alex Deucher
parent 9136e81e98
commit 99b922f9ed
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
View File

@ -2247,7 +2247,8 @@ static void get_active_converter_info(
translate_dpcd_max_bpc(
hdmi_color_caps.bits.MAX_BITS_PER_COLOR_COMPONENT);
link->dpcd_caps.dongle_caps.extendedCapValid = true;
if (link->dpcd_caps.dongle_caps.dp_hdmi_max_pixel_clk != 0)
link->dpcd_caps.dongle_caps.extendedCapValid = true;
}
break;