From: Oliver Logush <oliver.logush@xxxxxxx>
[why]
Make sure smu is not busy before sending another request, this is to
prevent stress failures from MS.
[how]
Check to make sure the SMU fw busy signal is cleared before sending
another request
Reviewed-by: Charlene Liu <Charlene.Liu@xxxxxxx>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@xxxxxxx>
Acked-by: Pavle Kotarac <Pavle.Kotarac@xxxxxxx>
Signed-off-by: Oliver Logush <oliver.logush@xxxxxxx>
---
.../drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c
index 8161a6ae410d..30c6f9cd717f 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c
@@ -94,6 +94,9 @@ static int rn_vbios_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr,
{
uint32_t result;
+ result = rn_smu_wait_for_response(clk_mgr, 10, 200000);
+ ASSERT(result == VBIOSSMC_Result_OK);
+
/* First clear response register */
REG_WRITE(MP1_SMN_C2PMSG_91, VBIOSSMC_Status_BUSY);
--
2.32.0
