]> git.baikalelectronics.ru Git - kernel.git/commit
drm/i915/skl: Disable coarse power gating up until F0
authorMika Kuoppala <mika.kuoppala@linux.intel.com>
Mon, 7 Dec 2015 16:29:44 +0000 (18:29 +0200)
committerJani Nikula <jani.nikula@intel.com>
Tue, 8 Dec 2015 14:18:29 +0000 (16:18 +0200)
commit00f5ba0af901b84ab1ad0eab9ddaab677f7e8e12
tree65e70dd3f2e9f14cf8199ca2f54f2695083f7e18
parent55ae64b980f8f73bf892fd8804291860f2eb9241
drm/i915/skl: Disable coarse power gating up until F0

There is conflicting info between E0 and F0 steppings
for this workarounds. Trust more authoritative source and
be conservative and extend also for F0.

This prevents numerous (>50) gpu hangs with SKL GT4e
during piglit run.

References: HSD: gen9lp/2134184
Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449505785-20812-1-git-send-email-mika.kuoppala@intel.com
(cherry picked from commit 6686ece19f7446f0e29c77d9e0402e1d0ce10c48)
Cc: stable@vger.kernel.org # v4.3+
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drivers/gpu/drm/i915/intel_pm.c