On 09/02/2015 19:33, Damien Lespiau wrote:
Signed-off-by: Damien Lespiau <damien.lespiau@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_pm.c | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 2043e82..a457c28 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6007,6 +6007,7 @@ 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)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index ed029e7..ff4e289 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -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);
bspec says this should be until B0
}
}
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