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drm/radeon/uvd: use lower clocks on old UVD to boot v2

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Some RV7xx generation hardware crashes after you
raise the UVD clocks for the first time. Try to
avoid this by using the lower clocks to boot these.

Workaround for: https://bugzilla.kernel.org/show_bug.cgi?id=71891

v2: lower clocks on IB test as well

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Christian König 2014-04-10 16:11:36 +02:00
parent b8eade24c9
commit e45187620f
1 changed files with 8 additions and 2 deletions
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10
drivers/gpu/drm/radeon/uvd_v1_0.c
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@ -83,7 +83,10 @@ int uvd_v1_0_init(struct radeon_device *rdev)
int r;
/* raise clocks while booting up the VCPU */
radeon_set_uvd_clocks(rdev, 53300, 40000);
if (rdev->family < CHIP_RV740)
radeon_set_uvd_clocks(rdev, 10000, 10000);
else
radeon_set_uvd_clocks(rdev, 53300, 40000);
r = uvd_v1_0_start(rdev);
if (r)
@ -407,7 +410,10 @@ int uvd_v1_0_ib_test(struct radeon_device *rdev, struct radeon_ring *ring)
struct radeon_fence *fence = NULL;
int r;
r = radeon_set_uvd_clocks(rdev, 53300, 40000);
if (rdev->family < CHIP_RV740)
r = radeon_set_uvd_clocks(rdev, 10000, 10000);
else
r = radeon_set_uvd_clocks(rdev, 53300, 40000);
if (r) {
DRM_ERROR("radeon: failed to raise UVD clocks (%d).\n", r);
return r;