3.13.11-ckt15 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@xxxxxxx>
commit 4bb62c95a7e781a238b2ab374f34b1bf91e01ddc upstream.
Always need to set bit 0 of RLC_CGTT_MGCG_OVERRIDE
to avoid unreliable doorbell updates in some cases.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/cik.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 642eed1..e205912 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -5676,6 +5676,7 @@ static void cik_enable_mgcg(struct radeon_device *rdev, bool enable)
}
orig = data = RREG32(RLC_CGTT_MGCG_OVERRIDE);
+ data |= 0x00000001;
data &= 0xfffffffd;
if (orig != data)
WREG32(RLC_CGTT_MGCG_OVERRIDE, data);
@@ -5707,7 +5708,7 @@ static void cik_enable_mgcg(struct radeon_device *rdev, bool enable)
}
} else {
orig = data = RREG32(RLC_CGTT_MGCG_OVERRIDE);
- data |= 0x00000002;
+ data |= 0x00000003;
if (orig != data)
WREG32(RLC_CGTT_MGCG_OVERRIDE, data);
--
1.9.1
--
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