From: Jesse Barnes <jbarnes@virtuousgeek.org>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH 3/4] drm/i915: add TDL unit clock gating disable for IVB and VLV
Date: Fri, 25 May 2012 12:32:39 -0700 [thread overview]
Message-ID: <1337974360-14224-3-git-send-email-jbarnes@virtuousgeek.org> (raw)
In-Reply-To: <1337974360-14224-1-git-send-email-jbarnes@virtuousgeek.org>
Another required workaround for a potential hang:
WaDisableTDLUnitClockGating.
References: https://bugs.freedesktop.org/show_bug.cgi?id=50245
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
---
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_pm.c | 2 ++
2 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index e479e1a..f95b5cc 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3990,6 +3990,7 @@
#define GEN6_UCGCTL2 0x9404
# define GEN7_VDSUNIT_CLOCK_GATE_DISABLE (1 << 30)
+# define GEN7_TDLUNIT_CLOCK_GATE_DISABLE (1 << 22)
# define GEN6_RCZUNIT_CLOCK_GATE_DISABLE (1 << 13)
# define GEN6_RCPBUNIT_CLOCK_GATE_DISABLE (1 << 12)
# define GEN6_RCCUNIT_CLOCK_GATE_DISABLE (1 << 11)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 630b466..b23e693 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3403,6 +3403,7 @@ static void ivybridge_init_clock_gating(struct drm_device *dev)
*/
I915_WRITE(GEN6_UCGCTL2,
GEN7_VDSUNIT_CLOCK_GATE_DISABLE |
+ GEN7_TDLUNIT_CLOCK_GATE_DISABLE |
GEN6_RCZUNIT_CLOCK_GATE_DISABLE |
GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
@@ -3482,6 +3483,7 @@ static void valleyview_init_clock_gating(struct drm_device *dev)
*/
I915_WRITE(GEN6_UCGCTL2,
GEN7_VDSUNIT_CLOCK_GATE_DISABLE |
+ GEN7_TDLUNIT_CLOCK_GATE_DISABLE |
GEN6_RCZUNIT_CLOCK_GATE_DISABLE |
GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
--
1.7.5.4
next prev parent reply other threads:[~2012-05-25 19:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-25 19:32 [PATCH 1/4] drm/i915: disable RCBP and VDS unit clock gating on IVB and VLV Jesse Barnes
2012-05-25 19:32 ` [PATCH 2/4] drm/i915: load boot context at driver init time Jesse Barnes
2012-05-25 19:32 ` Jesse Barnes [this message]
2012-05-25 19:32 ` [PATCH 4/4] drm/i915: add L3 bank clock gating disable on IVB and VLV Jesse Barnes
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