diff options
| author | Derek Lai <Derek.Lai@amd.com> | 2020-06-04 16:29:39 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-07-01 01:59:26 -0400 |
| commit | 7715fdf3362fa88f3e3620261a6e546f50713a5e (patch) | |
| tree | 0eee53b552a7f185e6cd97e9bffc1cad0f4524d6 /drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | |
| parent | dc43d9583f62e31a2bec1e414ec0cdfaa6a0debb (diff) | |
drm/amd/display: VSC SDP supported for SST
[why]
If a typeC to HDMI dongle supports YCbCr420 pass through and VSC
colorimetry and pixel encoding formats in the Extended Receiver
Capability, we shall allow VSC SDP to be used.
[How]
The Extended Receiver Capability field shall check the
EXTENDED_RECEIVER_CAPABILITY_FIELD_PRESENT bit in the
TRAINING_AUX_RD_INTERVAL register. Removed DPCD rev checking for VSC
SDP.
Signed-off-by: Derek Lai <Derek.Lai@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 2 |
1 files changed, 1 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 baad087c4f71..4054df1cd1a5 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 @@ -3376,7 +3376,7 @@ static bool retrieve_link_cap(struct dc_link *link) link->dpcd_caps.dpcd_rev.raw = dpcd_data[DP_DPCD_REV - DP_DPCD_REV]; - if (link->dpcd_caps.dpcd_rev.raw >= 0x14) { + if (link->dpcd_caps.ext_receiver_cap_field_present) { for (i = 0; i < read_dpcd_retry_cnt; i++) { status = core_link_read_dpcd( link, |