Signed-off-by: Arun Siluvery <arun.siluv...@linux.intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_pm.c | 6 ++++++
2 files changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 84ed9ab..2c719b0 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6894,6 +6894,7 @@ enum skl_disp_power_wells {
#define GEN7_DOP_CLOCK_GATE_ENABLE (1<<0)
#define GEN8_DOP_CLOCK_GATE_CFCLK_ENABLE (1<<2)
#define GEN8_DOP_CLOCK_GATE_GUC_ENABLE (1<<4)
+#define GEN8_DOP_CLOCK_GATE_MEDIA_ENABLE (1<<6)
#define GEN8_GARBCNTL 0xB004
#define GEN9_GAPS_TSV_CREDIT_DISABLE (1<<7)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 64bc77e..920872a 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -134,6 +134,12 @@ static void bxt_init_clock_gating(struct drm_device *dev)
*/
I915_WRITE(TILECTL, I915_READ(TILECTL) | TILECTL_TLBPF);
}
+
+ /* WaSetClckGatingDisableMedia:bxt */
+ if (INTEL_REVID(dev) == BXT_REVID_A0) {
+ I915_WRITE(GEN7_MISCCPCTL, (I915_READ(GEN7_MISCCPCTL) &
+ ~GEN8_DOP_CLOCK_GATE_MEDIA_ENABLE));
+ }
}
static void i915_pineview_get_mem_freq(struct drm_device *dev)
--
1.9.1
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