[PATCH 46/66] drm/amd/display: Reset OUTBOX0 r/w pointer on DMUB reset

[Qingqing Zhuo]

From: Cruise Hung <cruise.h...@amd.com>

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

Fixes: 6ecf9773a503 ("drm/amd/display: Fix DMUB outbox trace in S4")
Signed-off-by: Cruise Hung <cruise.h...@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pil...@amd.com>
---
 drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c 
b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c
index 568a2702d5f7..b45ac31ba555 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn32.c
@@ -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. */
-- 
2.34.1