From: Paulo Zanoni <paulo.r.zanoni at intel.com> Also document the WA name for the previous gens that implement it. Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com> --- drivers/gpu/drm/i915/intel_pm.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 59068be..150aebd 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3450,6 +3450,7 @@ static void gen6_init_clock_gating(struct drm_device *dev) ILK_DPARBUNIT_CLOCK_GATE_ENABLE | ILK_DPFDUNIT_CLOCK_GATE_ENABLE); + /* WaMbcDriverBootEnable */ I915_WRITE(GEN6_MBCTL, I915_READ(GEN6_MBCTL) | GEN6_MBCTL_ENABLE_BOOT_FETCH); @@ -3520,6 +3521,10 @@ static void haswell_init_clock_gating(struct drm_device *dev) I915_WRITE(CACHE_MODE_1, _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); + /* WaMbcDriverBootEnable */ + I915_WRITE(GEN6_MBCTL, I915_READ(GEN6_MBCTL) | + GEN6_MBCTL_ENABLE_BOOT_FETCH); + /* XXX: This is a workaround for early silicon revisions and should be * removed later. */ @@ -3595,6 +3600,7 @@ static void ivybridge_init_clock_gating(struct drm_device *dev) intel_flush_display_plane(dev_priv, pipe); } + /* WaMbcDriverBootEnable */ I915_WRITE(GEN6_MBCTL, I915_READ(GEN6_MBCTL) | GEN6_MBCTL_ENABLE_BOOT_FETCH); @@ -3647,6 +3653,7 @@ static void valleyview_init_clock_gating(struct drm_device *dev) I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); + /* WaMbcDriverBootEnable */ I915_WRITE(GEN6_MBCTL, I915_READ(GEN6_MBCTL) | GEN6_MBCTL_ENABLE_BOOT_FETCH); -- 1.7.11.4
