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drm/i915/skl: Implement WaDisableVFUnitClockGating 

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Damien Lespiau 2015-02-26 18:20:39 +00:00 committed by Daniel Vetter
parent 669506e781
commit f9fc42f4bd
2 changed files with 5 additions and 0 deletions
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1
drivers/gpu/drm/i915/i915_reg.h
View File

@ -6102,6 +6102,7 @@ enum skl_disp_power_wells {
# define GEN6_CSUNIT_CLOCK_GATE_DISABLE (1 << 7)
#define GEN6_UCGCTL2 0x9404
# define GEN6_VFUNIT_CLOCK_GATE_DISABLE (1 << 31)
# define GEN7_VDSUNIT_CLOCK_GATE_DISABLE (1 << 30)
# define GEN7_TDLUNIT_CLOCK_GATE_DISABLE (1 << 22)
# define GEN6_RCZUNIT_CLOCK_GATE_DISABLE (1 << 13)

4
drivers/gpu/drm/i915/intel_pm.c
View File

@ -75,6 +75,10 @@ static void skl_init_clock_gating(struct drm_device *dev)
I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) |
GEN8_GAPSUNIT_CLOCK_GATE_DISABLE |
GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
/* WaDisableVFUnitClockGating:skl */
I915_WRITE(GEN6_UCGCTL2, I915_READ(GEN6_UCGCTL2) |
GEN6_VFUNIT_CLOCK_GATE_DISABLE);
}
if (INTEL_REVID(dev) <= SKL_REVID_D0) {