diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/1588-drm-amd-display-Increase-DP-blank-timeout-from-30-ms.patch')
-rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/1588-drm-amd-display-Increase-DP-blank-timeout-from-30-ms.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/1588-drm-amd-display-Increase-DP-blank-timeout-from-30-ms.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/1588-drm-amd-display-Increase-DP-blank-timeout-from-30-ms.patch new file mode 100644 index 00000000..8ca52782 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/1588-drm-amd-display-Increase-DP-blank-timeout-from-30-ms.patch @@ -0,0 +1,40 @@ +From dbd4525530fa2a01988823bc9c92e5e0fadce252 Mon Sep 17 00:00:00 2001 +From: Ken Chalmers <ken.chalmers@amd.com> +Date: Fri, 15 Feb 2019 09:31:52 -0600 +Subject: [PATCH 1588/2940] drm/amd/display: Increase DP blank timeout from 30 + ms to 50 ms + +[Why] +At 24 Hz, a frame is 41.7 ms, so a 30 ms wait can (and does often) +timeout. + +[How] +Bump timeout from 30 ms to 50 ms. + +Signed-off-by: Ken Chalmers <ken.chalmers@amd.com> +Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c +index b08254121251..d370152018f8 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c +@@ -797,10 +797,10 @@ void enc1_stream_encoder_dp_blank( + */ + REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_DIS_DEFER, 2); + /* Larger delay to wait until VBLANK - use max retry of +- * 10us*3000=30ms. This covers 16.6ms of typical 60 Hz mode + ++ * 10us*5000=50ms. This covers 41.7ms of minimum 24 Hz mode + + * a little more because we may not trust delay accuracy. + */ +- max_retries = DP_BLANK_MAX_RETRY * 150; ++ max_retries = DP_BLANK_MAX_RETRY * 250; + + /* disable DP stream */ + REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, 0); +-- +2.17.1 + |