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drm/amd/display: Reset OUTBOX0 r/w pointer on DMUB reset

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[ Upstream commit 425afa0ac99a05b39e6cd00704fa0e3e925cee2b ]

[Why & How]
We missed resetting OUTBOX0 mailbox r/w pointer on DMUB reset.
Fix it.

Fixes: 6ecf9773a5 ("drm/amd/display: Fix DMUB outbox trace in S4 (#4465)")
Signed-off-by: Cruise Hung <Cruise.Hung@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Cruise Hung 2022-05-13 09:16:42 +08:00 • committed by Greg Kroah-Hartman
parent bb13726625
commit ccb0ad946a
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c
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@ -130,6 +130,8 @@ void dmub_dcn32_reset(struct dmub_srv *dmub)
REG_WRITE(DMCUB_INBOX1_WPTR, 0);
REG_WRITE(DMCUB_OUTBOX1_RPTR, 0);
REG_WRITE(DMCUB_OUTBOX1_WPTR, 0);
REG_WRITE(DMCUB_OUTBOX0_RPTR, 0);
REG_WRITE(DMCUB_OUTBOX0_WPTR, 0);
REG_WRITE(DMCUB_SCRATCH0, 0);
}