[PATCH 1/2] drm/amdgpu: always un-gate UVD REGS path.

[Rex Zhu]

Change-Id: I910a79b551a9b79b635161bb42ac123a23783225
Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c b/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c
index d2c96f1..d686946 100644
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c
@@ -596,7 +596,10 @@ static void uvd_v4_2_set_dcm(struct amdgpu_device *adev,
 			     bool sw_mode)
 {
 	u32 tmp, tmp2;
+	u32 data = RREG32(mmUVD_CGC_GATE);
 
+	data &= ~UVD_CGC_GATE__REGS_MASK;
+	WREG32(mmUVD_CGC_GATE, data);
 	tmp = RREG32(mmUVD_CGC_CTRL);
 	tmp &= ~(UVD_CGC_CTRL__CLK_OFF_DELAY_MASK | UVD_CGC_CTRL__CLK_GATE_DLY_TIMER_MASK);
 	tmp |= UVD_CGC_CTRL__DYN_CLOCK_MODE_MASK |
-- 
1.9.1