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

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
View File

@ -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;