diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/1675-drm-amd-display-Only-allow-VRR-when-vrefresh-is-with.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/1675-drm-amd-display-Only-allow-VRR-when-vrefresh-is-with.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/1675-drm-amd-display-Only-allow-VRR-when-vrefresh-is-with.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/1675-drm-amd-display-Only-allow-VRR-when-vrefresh-is-with.patch new file mode 100644 index 00000000..ff71199b --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/1675-drm-amd-display-Only-allow-VRR-when-vrefresh-is-with.patch @@ -0,0 +1,46 @@ +From c4b9623f73316daee96c32184f20fde05427dbc1 Mon Sep 17 00:00:00 2001 +From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> +Date: Thu, 21 Mar 2019 11:53:45 -0400 +Subject: [PATCH 1675/2940] drm/amd/display: Only allow VRR when vrefresh is + within supported range + +[Why] +Black screens or artifacting can occur when enabling FreeSync outside +of the supported range of the monitor. This can happen since the +supported range isn't always the min/max vrefresh range available for +the monitor. + +[How] +There was previously a fix that prevented this from happening in the +low range but it didn't cover the upper range. Expand the condition +to include both. + +Cc: Sun peng Li <Sunpeng.Li@amd.com> +Cc: Harry Wentland <Harry.Wentland@amd.com> +Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> +Acked-by: Alex Deucher <alexander.deucher@amd.com> +Reviewed-by: Harry Wentland <harry.wentland@amd.com> +--- + drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 5 ++++- + 1 file changed, 4 insertions(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +index 11e41a0f54d4..77533bd58aef 100644 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +@@ -5584,8 +5584,11 @@ static void get_freesync_config_for_crtc( + to_amdgpu_dm_connector(new_con_state->base.connector); + + struct drm_display_mode *mode = &new_crtc_state->base.mode; ++ int vrefresh = drm_mode_vrefresh(mode); ++ + new_crtc_state->vrr_supported = new_con_state->freesync_capable && +- aconnector->min_vfreq <= drm_mode_vrefresh(mode); ++ vrefresh >= aconnector->min_vfreq && ++ vrefresh <= aconnector->max_vfreq; + + if (new_crtc_state->vrr_supported) { + new_crtc_state->stream->ignore_msa_timing_param = true; +-- +2.17.1 + |