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authorDamien Lespiau <damien.lespiau@intel.com>2015-02-09 19:33:10 +0000
committerDaniel Vetter <daniel.vetter@ffwll.ch>2015-02-13 23:28:33 +0100
commit9253c2e56b83dcc194f1e47bfd7b2bc1cc09a53f (patch)
tree787b4b2deaadf14d04fba4022ef4d1e435572517 /drivers/gpu/drm
parent45db2194ac7c91a96b18be32c6d7f12a8695868a (diff)
downloadtalos-obmc-linux-9253c2e56b83dcc194f1e47bfd7b2bc1cc09a53f.tar.gz
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drm/i915/skl: Implement WaSetGAPSunitClckGateDisable
Let's also take the opportunity the remove the comment telling it's a pre-prod W/A, it should be obvious from the stepping test. Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> Reviewed-by: Nick Hoath <nicholas.hoath@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r--drivers/gpu/drm/i915/i915_reg.h1
-rw-r--r--drivers/gpu/drm/i915/intel_pm.c3
2 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 5de6cf450e1a..b00d323095af 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6018,6 +6018,7 @@ enum skl_disp_power_wells {
#define GEN6_RSTCTL 0x9420
#define GEN8_UCGCTL6 0x9430
+#define GEN8_GAPSUNIT_CLOCK_GATE_DISABLE (1<<24)
#define GEN8_SDEUNIT_CLOCK_GATE_DISABLE (1<<14)
#define GEN6_GFXPAUSE 0xA000
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index b162c5c288bb..af8dca28c505 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -59,9 +59,10 @@ static void skl_init_clock_gating(struct drm_device *dev)
if (INTEL_REVID(dev) == SKL_REVID_A0) {
/*
* WaDisableSDEUnitClockGating:skl
- * This seems to be a pre-production w/a.
+ * WaSetGAPSunitClckGateDisable:skl
*/
I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) |
+ GEN8_GAPSUNIT_CLOCK_GATE_DISABLE |
GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
}
}
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