Commit 7e647296 authored by Fatemeh Darbehani's avatar Fatemeh Darbehani Committed by Alex Deucher

drm/amd/display: Change min_h_sync_width from 8 to 4

[Why]
Some display's hsync width is lower than the minimum dcn20 is set
to support right now. This will cause optc1_validate_timing to fail which
eventually will result in wrong set mode. This was set to 8 as per
HW team's request for no valid reason.

[How]
Changing min_h_sync_width to 4 will let us validate timing for
preffered mode and light up the headset. This change was made
to Vega 10 before for a similar issue.
Signed-off-by: default avatarFatemeh Darbehani <fatemeh.darbehani@amd.com>
Reviewed-by: default avatarJoshua Aberback <Joshua.Aberback@amd.com>
Acked-by: default avatarAric Cyr <Aric.Cyr@amd.com>
Acked-by: default avatarLeo Li <sunpeng.li@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 1b3c6103
...@@ -535,7 +535,7 @@ void dcn20_timing_generator_init(struct optc *optc1) ...@@ -535,7 +535,7 @@ void dcn20_timing_generator_init(struct optc *optc1)
optc1->min_h_blank = 32; optc1->min_h_blank = 32;
optc1->min_v_blank = 3; optc1->min_v_blank = 3;
optc1->min_v_blank_interlace = 5; optc1->min_v_blank_interlace = 5;
optc1->min_h_sync_width = 8; optc1->min_h_sync_width = 4;// Minimum HSYNC = 8 pixels asked By HW in the first place for no actual reason. Oculus Rift S will not light up with 8 as it's hsyncWidth is 6. Changing it to 4 to fix that issue.
optc1->min_v_sync_width = 1; optc1->min_v_sync_width = 1;
optc1->comb_opp_id = 0xf; optc1->comb_opp_id = 0xf;
} }
......
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