[PATCH 44/73] drm/amdgpu/mes10.1: add delay after mes engine enable

[Alex Deucher]

From: Jack Xiao <Jack.Xiao at amd.com>

Add delay after mes engine enable, for it needs more time
to complete engine initialising.

Signed-off-by: Jack Xiao <Jack.Xiao at amd.com>
Acked-by: Christian König <christian.koenig at amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/mes_v10_1.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v10_1.c b/drivers/gpu/drm/amd/amdgpu/mes_v10_1.c
index 94812164998a..d4e64c5a3215 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v10_1.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v10_1.c
@@ -473,6 +473,7 @@ static void mes_v10_1_enable(struct amdgpu_device *adev, bool enable)
 		data = REG_SET_FIELD(data, CP_MES_CNTL, MES_PIPE1_ACTIVE,
 				     adev->enable_mes_kiq ? 1 : 0);
 		WREG32_SOC15(GC, 0, mmCP_MES_CNTL, data);
+		udelay(50);
 	} else {
 		data = RREG32_SOC15(GC, 0, mmCP_MES_CNTL);
 		data = REG_SET_FIELD(data, CP_MES_CNTL, MES_PIPE0_ACTIVE, 0);
-- 
2.35.1