Disable a swath of clock gating bits pending further testing and
measurement.
Signed-off-by: Jesse Barnes <jbar...@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
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