diff options
| author | Wesley Chalmers <Wesley.Chalmers@amd.com> | 2021-03-30 18:15:21 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-15 16:31:31 -0400 |
| commit | fab8580107b88b1576a17f0e48b238caecc46d96 (patch) | |
| tree | 07311efafc1822944689809c754e7df465223da0 | |
| parent | b0f3438286bcf33a51d039ebd20a0d5dd89a794d (diff) | |
drm/amd/display: Set LTTPR mode to non-LTTPR if no repeaters found
[WHY]
If no repeaters are found, we do not need or want to attempt to
link-train repeaters, as this could cause bugs.
Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Acked-by: Bindu Ramamurthy <bindur12@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@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, 2 insertions, 0 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 9d6a8e728317..e6f8f3c255bc 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 @@ -3582,6 +3582,8 @@ static bool retrieve_link_cap(struct dc_link *link) link->dpcd_caps.lttpr_caps.revision.raw >= 0x14); if (is_lttpr_present) CONN_DATA_DETECT(link, lttpr_dpcd_data, sizeof(lttpr_dpcd_data), "LTTPR Caps: "); + else + link->lttpr_mode = LTTPR_MODE_NON_LTTPR; } if (!is_lttpr_present) |