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drm/i915: Disable decoupled MMIO

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The decoupled MMIO feature doesn't work as intended by HW team. Enabling
it with forcewake will only make debugging efforts more difficult, so
let's disable it.

Fixes: 85ee17ebee ("drm/i915/bxt: Broxton decoupled MMIO")
Cc: Zhe Wang <zhe1.wang@intel.com>
Cc: Praveen Paneri <praveen.paneri@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v4.10+
Signed-off-by: Kai Chen <kai.chen@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170523215812.18328-2-kai.chen@intel.com
(cherry picked from commit 0051c10aca)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Kai Chen 2017-05-23 14:58:11 -07:00 committed by Jani Nikula
parent 4ca9a58219
commit 4c4c565513
1 changed files with 0 additions and 1 deletions
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drivers/gpu/drm/i915/i915_pci.c
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@ -390,7 +390,6 @@ static const struct intel_device_info intel_skylake_gt3_info = {
.has_hw_contexts = 1, \
.has_logical_ring_contexts = 1, \
.has_guc = 1, \
.has_decoupled_mmio = 1, \
.has_aliasing_ppgtt = 1, \
.has_full_ppgtt = 1, \
.has_full_48bit_ppgtt = 1, \