Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx> On 9/8/2015 3:01 PM, Arun Siluvery wrote:
Signed-off-by: Arun Siluvery <arun.siluvery@xxxxxxxxxxxxxxx> --- 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)
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