Disable a swath of clock gating bits pending further testing and measurement. Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org> --- drivers/gpu/drm/i915/intel_pm.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index e8d416c..2820707 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3851,7 +3851,16 @@ static void valleyview_init_clock_gating(struct drm_device *dev) * Disable clock gating on th GCFG unit to prevent a delay * in the reporting of vblank events. */ - I915_WRITE(VLV_GUNIT_CLOCK_GATE, GCFG_DIS); + I915_WRITE(VLV_GUNIT_CLOCK_GATE, 0xffffffff); + + /* Need testing & additional review on newer hw */ + I915_WRITE(0x9400, 0xffffffff); + I915_WRITE(0x9404, 0xffffffff); + I915_WRITE(0x9408, 0xffffffff); + I915_WRITE(0x940c, 0xffffffff); + I915_WRITE(0x9410, 0xffffffff); + I915_WRITE(0x9414, 0xffffffff); + I915_WRITE(0x9418, 0xffffffff); } static void g4x_init_clock_gating(struct drm_device *dev) -- 1.7.9.5
