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drm/i915: Stop setting SNB min-freq-table 0 on powersave setup

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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@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20161021205531.8651-1-chris@chris-wilson.co.uk
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
This commit is contained in:
Chris Wilson 2016-10-21 21:55:31 +01:00
parent d4cb3fd9b5
commit fbf0296c25
1 changed files with 0 additions and 4 deletions
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4
drivers/gpu/drm/i915/intel_pm.c
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@ -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;