diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2336-drm-amd-display-Fix-time-out-on-boot.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2336-drm-amd-display-Fix-time-out-on-boot.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2336-drm-amd-display-Fix-time-out-on-boot.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2336-drm-amd-display-Fix-time-out-on-boot.patch new file mode 100644 index 00000000..56830f77 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2336-drm-amd-display-Fix-time-out-on-boot.patch @@ -0,0 +1,38 @@ +From 08cc371962bdc11dec8ba029b1dc6c8ccc8f97da Mon Sep 17 00:00:00 2001 +From: Eric Yang <Eric.Yang2@amd.com> +Date: Mon, 28 Aug 2017 16:50:17 -0400 +Subject: [PATCH 2336/4131] drm/amd/display: Fix time out on boot + +On boot, hubp 0 is powergated during enable accel mode, so we time out +when we try to blank in undo wa. + +Fix: Check power gate status before set blank + +Signed-off-by: Eric Yang <Eric.Yang2@amd.com> +Reviewed-by: Hersen Wu <hersenxs.wu@amd.com> +Acked-by: Harry Wentland <Harry.Wentland@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +index 71ff1ce..7ea2744 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +@@ -780,6 +780,12 @@ static void undo_DEGVIDCN10_253_wa(struct dc *dc) + { + struct dce_hwseq *hws = dc->hwseq; + struct mem_input *mi = dc->res_pool->mis[0]; ++ int pwr_status = 0; ++ ++ REG_GET(DOMAIN0_PG_STATUS, DOMAIN0_PGFSM_PWR_STATUS, &pwr_status); ++ /* Don't need to blank if hubp is power gated*/ ++ if (pwr_status == 2) ++ return; + + mi->funcs->set_blank(mi, true); + +-- +2.7.4 + |