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authorAlex Deucher <alexander.deucher@amd.com>2013-08-01 14:35:02 -0400
committerAlex Deucher <alexander.deucher@amd.com>2013-08-07 17:37:12 -0400
commitce149a9406c104e7a361afae18a13d4eaa5c2429 (patch)
tree2db9483437295acb9fb2e7ad8e47ae68c0441ed9
parent2858c00d2823c83acce2a1175dbabb2cebee8678 (diff)
downloadlinux-ce149a9406c104e7a361afae18a13d4eaa5c2429.tar.bz2
drm/radeon/dpm: disable sclk ss on rv6xx
Enabling spread spectrum on the engine clock leads to hangs on some asics. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=66963 Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
-rw-r--r--drivers/gpu/drm/radeon/rv6xx_dpm.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/rv6xx_dpm.c b/drivers/gpu/drm/radeon/rv6xx_dpm.c
index e44a90a359a5..bdd888b4db2b 100644
--- a/drivers/gpu/drm/radeon/rv6xx_dpm.c
+++ b/drivers/gpu/drm/radeon/rv6xx_dpm.c
@@ -1992,6 +1992,9 @@ int rv6xx_dpm_init(struct radeon_device *rdev)
pi->mclk_ss = radeon_atombios_get_asic_ss_info(rdev, &ss,
ASIC_INTERNAL_MEMORY_SS, 0);
+ /* Disable sclk ss, causes hangs on a lot of systems */
+ pi->sclk_ss = false;
+
if (pi->sclk_ss || pi->mclk_ss)
pi->dynamic_ss = true;
else