From 443e4ffdacbf6cb2e7b3f9d7600799bf8fa40217 Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Sat, 3 Jan 2015 11:57:49 -0800 Subject: [PATCH 1/3] TEST drm/i915: single port PSD dispatch for HSW Signed-off-by: Ben Widawsky --- drivers/gpu/drm/i915/intel_pm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index a3ebaa8..a27a879 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5989,6 +5989,10 @@ static void haswell_init_clock_gating(struct drm_device *dev) I915_WRITE(CHICKEN_PAR1_1, I915_READ(CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES); + /* Disable PSD dual port dispatch, just 'cause */ + I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, + _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); + lpt_init_clock_gating(dev); } -- 2.2.1