diff options
| author | George Shen <George.Shen@amd.com> | 2021-12-02 23:07:35 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-12-30 08:54:44 -0500 |
| commit | fddb024537f121995957d816fcf8e2e230451db2 (patch) | |
| tree | da6ee0a40913ca5d1f862fd7e5a91cdc83c9a0cf | |
| parent | bf252ce1fa8ac68baee3f8525fc6453d278b619d (diff) | |
drm/amd/display: Limit max link cap with LTTPR caps
[Why]
Max link rate should be limited to the maximum link rate support by any
LTTPR that are connected, including when operating in transparent mode.
[How]
Include transparent mode when factoring in LTTPR max supported link
rate.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Wesley Chalmers <wesley.chalmers@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: George Shen <George.Shen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -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 8a35370da867..6f552f7ee1db 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 @@ -2873,7 +2873,7 @@ static struct dc_link_settings get_max_link_cap(struct dc_link *link) * account for lttpr repeaters cap * notes: repeaters do not snoop in the DPRX Capabilities addresses (3.6.3). */ - if (link->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT) { + if (link->lttpr_mode != LTTPR_MODE_NON_LTTPR) { if (link->dpcd_caps.lttpr_caps.max_lane_count < max_link_cap.lane_count) max_link_cap.lane_count = link->dpcd_caps.lttpr_caps.max_lane_count; |