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drm/i915/bxt: Add WaSetClckGatingDisableMedia 

Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Arun Siluvery 2015-09-08 10:31:49 +01:00 committed by Daniel Vetter
parent 8c761609ec
commit 5b88abacd4
2 changed files with 7 additions and 0 deletions
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1
drivers/gpu/drm/i915/i915_reg.h
View File

@ -6897,6 +6897,7 @@ 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)

6
drivers/gpu/drm/i915/intel_pm.c
View File

@ -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)