From ce149a9406c104e7a361afae18a13d4eaa5c2429 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 1 Aug 2013 14:35:02 -0400 Subject: [PATCH] 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 --- drivers/gpu/drm/radeon/rv6xx_dpm.c | 3 +++ 1 file changed, 3 insertions(+) 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 -- 2.20.1