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drm/i915: Set the required VFMUNIT clock gating disable on Ironlake.

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It's required by the specs, but we don't know why.  Let's not find out
why.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Eric Anholt 2010-12-14 10:06:46 -08:00 committed by Chris Wilson
parent e819eb8687
commit 06f37751af
2 changed files with 5 additions and 0 deletions
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3
drivers/gpu/drm/i915/i915_reg.h
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@ -2471,6 +2471,9 @@
# define MARIUNIT_CLOCK_GATE_DISABLE (1 << 18)
# define SVSMUNIT_CLOCK_GATE_DISABLE (1 << 1)
#define PCH_3DCGDIS1 0x46024
# define VFMUNIT_CLOCK_GATE_DISABLE (1 << 11)
#define FDI_PLL_FREQ_CTL 0x46030
#define FDI_PLL_FREQ_CHANGE_REQUEST (1<<24)
#define FDI_PLL_FREQ_LOCK_LIMIT_MASK 0xfff00

2
drivers/gpu/drm/i915/intel_display.c
View file

@ -5825,6 +5825,8 @@ void intel_init_clock_gating(struct drm_device *dev)
I915_WRITE(PCH_3DCGDIS0,
MARIUNIT_CLOCK_GATE_DISABLE |
SVSMUNIT_CLOCK_GATE_DISABLE);
I915_WRITE(PCH_3DCGDIS1,
VFMUNIT_CLOCK_GATE_DISABLE);
}
I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);