[Intel-gfx] [PATCH] drm/i915: Stop setting SNB min-freq-table 0 on powersave setup

Chris Wilson chris at chris-wilson.co.uk
Fri Oct 21 20:55:31 UTC 2016


The min-freq-table is an array of values that match each CPU frequency to
an equivalent GPU frequency. Setting a single value of 0 on init is both
illegal (generates an error from the PCU) and nonsensical. Let's see if
we survive without that error.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_pm.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index b65208e23a08..ba3d1e97986a 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5589,10 +5589,6 @@ static void gen6_enable_rps(struct drm_i915_private *dev_priv)
 	I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 50000);
 	I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10);
 
-	ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_MIN_FREQ_TABLE, 0);
-	if (ret)
-		DRM_DEBUG_DRIVER("Failed to set the min frequency\n");
-
 	reset_rps(dev_priv, gen6_set_rps);
 
 	rc6vids = 0;
-- 
2.9.3



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