git/linux-cryptodev-2.6
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git synced 2026-04-23 05:56:14 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/display: implement workaround for riommu related hang

Browse Source 
[Why]
During S4/S5/reboot, sometimes riommu invalidation request arrive too
early, DCN may be unable to respond to the invalidation request
resulting in pstate hang.

[How]
VBIOS will force allow pstate for riommu invalidation and driver will
clear it after powering down display pipes.

Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Yang
2021-06-23 15:48:02 -04:00
committed by Alex Deucher
parent ec3102dc6b
commit 32f1d0cfc3
6 changed files with 27 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.h
View File

@@ -52,5 +52,6 @@ void dcn31_reset_hw_ctx_wrap(
struct dc_state *context);
bool dcn31_is_abm_supported(struct dc *dc,
struct dc_state *context, struct dc_stream_state *stream);
void dcn31_init_pipes(struct dc *dc, struct dc_state *context);
#endif /* __DC_HWSS_DCN31_H__ */