Commit b0dc1042 authored by Cruise Hung's avatar Cruise Hung Committed by Alex Deucher
Browse files

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



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

Fixes: 6ecf9773 ("drm/amd/display: Fix DMUB outbox trace in S4 (#4465)")
Signed-off-by: default avatarCruise Hung <Cruise.Hung@amd.com>
Acked-by: default avatarAurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 4e7f84ec

drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c

+2 −0
Original line number Diff line number Diff line
@@ -126,6 +126,8 @@ 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);



	/* Clear the GPINT command manually so we don't reset again. */