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linux/drivers/gpu/drm/amd/display/dc/clk_mgr
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Mario Limonciello c4849f8816 drm/amd/display: Revert W/A for hard hangs on DCN20/DCN21 
The WA from commit 2a50edbf10 ("drm/amd/display: Apply w/a for hard hang
on HPD") and commit 1bd3bc745e ("drm/amd/display: Extend w/a for hard
hang on HPD to dcn20") causes a regression in s0ix where the system will
fail to resume properly on many laptops.  Pull the workarounds out to
avoid that s0ix regression in the common case.  This HPD hang happens with
an external device in special circumstances and a new W/A will need to be
developed for this in the future.

Cc: stable@vger.kernel.org
Cc: Qingqing Zhuo <qingqing.zhuo@amd.com>
Reported-by: Scott Bruce <smbruce@gmail.com>
Reported-by: Chris Hixon <linux-kernel-bugs@hixontech.com>
Reported-by: spasswolf@web.de
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215436
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/1821
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/1852
Fixes: 2a50edbf10 ("drm/amd/display: Apply w/a for hard hang on HPD")
Fixes: 1bd3bc745e ("drm/amd/display: Extend w/a for hard hang on HPD to dcn20")
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-01-14 18:06:45 -05:00
..
dce60 drm/amd/display: dc/clk_mgr: make function static 2020-09-17 21:21:40 -04:00
dce100 drm/amd/display: remove redundant assignment to variable dp_ref_clk_khz 2020-04-22 18:11:45 -04:00
dce110 drm/amd/display: correct asic type check V2 2020-10-27 12:01:16 -04:00
dce112 drm/amd/display: correct asic type check V2 2020-10-27 12:01:16 -04:00
dce120 drm/amd/display: Copy max_clks_by_state after dce_clk_mgr_construct 2019-07-18 14:18:09 -05:00
dcn10 drm/amd/display: fix function scopes 2021-12-13 16:34:26 -05:00
dcn20 drm/amd/display: Revert W/A for hard hangs on DCN20/DCN21 2022-01-14 18:06:45 -05:00
dcn21 drm/amd/display: Revert W/A for hard hangs on DCN20/DCN21 2022-01-14 18:06:45 -05:00
dcn30 drm/amd/display: implement dc_mode_memclk 2021-12-14 16:08:41 -05:00
dcn31 drm/amd/display: reset dcn31 SMU mailbox on failures 2022-01-11 15:44:27 -05:00
dcn201 drm/amd/display: fix function scopes 2021-12-13 16:34:26 -05:00
dcn301 drm/amd/display: Fix warning comparing pointer to 0 2021-12-16 14:08:20 -05:00
clk_mgr.c drm/amd/display: add else to avoid double destroy clk_mgr 2021-11-24 14:06:52 -05:00
Makefile drm/amdgpu/display: fold DRM_AMD_DC_DCN201 into DRM_AMD_DC_DCN 2021-10-04 15:23:02 -04:00