diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c index e011df4bdaf2..90339c2dfd84 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c @@ -1699,13 +1699,20 @@ bool perform_link_training_with_retries( } else if (do_fallback) { /* Try training at lower link bandwidth if doing fallback. */ uint32_t req_bw; uint32_t link_bw; + enum dc_link_encoding_format link_encoding = DC_LINK_ENCODING_UNSPECIFIED; decide_fallback_link_setting(link, &max_link_settings, &cur_link_settings, status); + + if (link_dp_get_encoding_format(&cur_link_settings) == DP_8b_10b_ENCODING) + link_encoding = DC_LINK_ENCODING_DP_8b_10b; + else if (link_dp_get_encoding_format(&cur_link_settings) == DP_128b_132b_ENCODING) + link_encoding = DC_LINK_ENCODING_DP_128b_132b; + /* Flag if reduced link bandwidth no longer meets stream requirements or fallen back to * minimum link bandwidth. */ - req_bw = dc_bandwidth_in_kbps_from_timing(&stream->timing); + req_bw = dc_bandwidth_in_kbps_from_timing(&stream->timing, link_encoding); link_bw = dp_link_bandwidth_kbps(link, &cur_link_settings); is_link_bw_low = (req_bw > link_bw); is_link_bw_min = ((cur_link_settings.link_rate <= LINK_RATE_LOW) && |