[PATCH 21/31] drm/amd/amdgpu: workaround for the imu fw loading

[Alex Deucher]

From: Kenneth Feng <kenneth.feng at amd.com>

workaournd for the imu fw loading on gfx 12.0 without psp

Signed-off-by: Kenneth Feng <kenneth.feng at amd.com>
Reviewed-by: Likun Gao <Likun.Gao at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/imu_v12_0.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/imu_v12_0.c b/drivers/gpu/drm/amd/amdgpu/imu_v12_0.c
index be140ee4d9173..7112e4b2d6489 100644
--- a/drivers/gpu/drm/amd/amdgpu/imu_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/imu_v12_0.c
@@ -143,6 +143,11 @@ static void imu_v12_0_setup(struct amdgpu_device *adev)
 		imu_reg_val = RREG32_SOC15(GC, 0, regGFX_IMU_C2PMSG_16);
 		imu_reg_val |= 0x1;
 		WREG32_SOC15(GC, 0, regGFX_IMU_C2PMSG_16, imu_reg_val);
+
+		imu_reg_val = RREG32_SOC15(GC, 0, regGFX_IMU_SCRATCH_10);
+		imu_reg_val |= 0x20010007;
+		WREG32_SOC15(GC, 0, regGFX_IMU_SCRATCH_10, imu_reg_val);
+
 	}
 }
 
-- 
2.44.0