From: Stéphane Marchesin <[email protected]> Apparently 150k doesn't work on snb. After probing the snb I have here, 125k is the max that the hardware seems to work with, and luckily it seems stable after 50 power_Resume runs. So let's use that.
BUG=chromium:251989 TEST=see rc6 residency go up in /sys/kernel/debug/dri/0/i915_drpc_info Change-Id: Id78546f939c3d321760e2c32a894cb5ef4118998 Reviewed-on: https://gerrit.chromium.org/gerrit/59359 Tested-by: Stéphane Marchesin <[email protected]> Reviewed-by: Sonny Rao <[email protected]> Commit-Queue: Stéphane Marchesin <[email protected]> --- drivers/gpu/drm/i915/intel_pm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 8105d10..a735190 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2572,7 +2572,7 @@ static void gen6_enable_rps(struct drm_device *dev) I915_WRITE(GEN6_RC_SLEEP, 0); I915_WRITE(GEN6_RC1e_THRESHOLD, 1000); - I915_WRITE(GEN6_RC6_THRESHOLD, 150000); + I915_WRITE(GEN6_RC6_THRESHOLD, 125000); I915_WRITE(GEN6_RC6p_THRESHOLD, 150000); I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */ -- 1.8.3.2 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
