diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3053-drm-amd-display-Change-min_h_sync_width-from-8-to-4.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3053-drm-amd-display-Change-min_h_sync_width-from-8-to-4.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3053-drm-amd-display-Change-min_h_sync_width-from-8-to-4.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3053-drm-amd-display-Change-min_h_sync_width-from-8-to-4.patch new file mode 100644 index 00000000..a4173401 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3053-drm-amd-display-Change-min_h_sync_width-from-8-to-4.patch @@ -0,0 +1,41 @@ +From e64143d2703ef981b8119c6f3db77fc939639300 Mon Sep 17 00:00:00 2001 +From: Fatemeh Darbehani <fatemeh.darbehani@amd.com> +Date: Fri, 21 Jun 2019 17:44:50 -0400 +Subject: [PATCH 3053/4256] 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: Fatemeh Darbehani <fatemeh.darbehani@amd.com> +Reviewed-by: Joshua Aberback <Joshua.Aberback@amd.com> +Acked-by: Aric Cyr <Aric.Cyr@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c +index 26a66ccf6e72..1ae973962d53 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c +@@ -535,7 +535,7 @@ void dcn20_timing_generator_init(struct optc *optc1) + optc1->min_h_blank = 32; + optc1->min_v_blank = 3; + 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->comb_opp_id = 0xf; + } +-- +2.17.1 + |