From: David Galiffi Date: Sat, 8 Jun 2019 01:32:34 +0000 (-0400) Subject: drm/amd/display: Incorrect Read Interval Time For CR Sequence X-Git-Tag: v5.4-rc1~106^2~17^2~292 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=0430017149c53f20493ebeee856315c669d18f4d;p=linux.git drm/amd/display: Incorrect Read Interval Time For CR Sequence [WHY] TRAINING_AUX_RD_INTERVAL (DPCD 000Eh) modifies the read interval for the EQ training sequence. CR read interval should remain 100 us. Currently, the CR interval is also being modified. [HOW] lt_settings->cr_pattern_time should always be 100 us. Signed-off-by: David Galiffi Reviewed-by: Tony Cheng Acked-by: Leo Li Signed-off-by: Alex Deucher --- 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 fca1bfc901b6..4442e7b1e5b5 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 @@ -1035,7 +1035,7 @@ static void initialize_training_settings( if (link->preferred_training_settings.cr_pattern_time != NULL) lt_settings->cr_pattern_time = *link->preferred_training_settings.cr_pattern_time; else - lt_settings->cr_pattern_time = get_training_aux_rd_interval(link, 100); + lt_settings->cr_pattern_time = 100; if (link->preferred_training_settings.eq_pattern_time != NULL) lt_settings->eq_pattern_time = *link->preferred_training_settings.eq_pattern_time;