diff options
| author | Wenjing Liu <Wenjing.Liu@amd.com> | 2018-12-05 12:14:45 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-12 19:47:15 +0100 |
| commit | 8f0132db09ad2ddd0889b484c494ca376f27b5dd (patch) | |
| tree | 9261df7ff4b9a2820be8c5df93ed02e93a7d2972 /drivers/gpu/drm/amd/display/dc | |
| parent | bd9218ab042ae001bf5331a0a41e851be63b2cde (diff) | |
drm/amd/display: validate extended dongle caps
[ Upstream commit 99b922f9ed6a6313c0d2247cde8aa1e4a0bd67e4 ]
[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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index a7553b6d59c2..05840f5bddd5 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -2240,7 +2240,8 @@ 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; |