[PATCH 19/22] drm/amd/display: Disable HUBP/DPP PG on DCN314 for now

Qingqing Zhuo qingqing.zhuo at amd.com
Sun Feb 12 16:59:52 UTC 2023


From: Nicholas Kazlauskas <nicholas.kazlauskas at amd.com>

[Why]
The DMCUB implementation required to workaround corruption is
not currently stable and may cause intermittent corruption or hangs.

[How]
Disable PG until the sequence is stable.

Reviewed-by: Hansen Dsouza <hansen.dsouza at amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo at amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c
index ea1cb90f8b92..54ed3de869d3 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c
@@ -892,6 +892,8 @@ static const struct dc_debug_options debug_defaults_drv = {
 	.force_abm_enable = false,
 	.timing_trace = false,
 	.clock_trace = true,
+	.disable_dpp_power_gate = true,
+	.disable_hubp_power_gate = true,
 	.disable_pplib_clock_request = false,
 	.pipe_split_policy = MPC_SPLIT_DYNAMIC,
 	.force_single_disp_pipe_split = false,
-- 
2.25.1



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