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drm/i915/tgl: Wa_1409170338

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Avoid possible hang in tsg,vfe units by keeping
l3 clocks runnings.

Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191015154449.10338-7-mika.kuoppala@linux.intel.com
This commit is contained in:
Mika Kuoppala 2019-10-15 18:44:45 +03:00 committed by Chris Wilson
parent 65df78bda3
commit 2cbe2d8c56
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/i915/gt/intel_workarounds.c
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@ -907,6 +907,12 @@ tgl_gt_workarounds_init(struct drm_i915_private *i915, struct i915_wa_list *wal)
wa_write_or(wal,
SUBSLICE_UNIT_LEVEL_CLKGATE2,
CPSSUNIT_CLKGATE_DIS);
/* Wa_1409180338:tgl */
if (IS_TGL_REVID(i915, TGL_REVID_A0, TGL_REVID_A0))
wa_write_or(wal,
SLICE_UNIT_LEVEL_CLKGATE,
L3_CLKGATE_DIS | L3_CR2X_CLKGATE_DIS);
}
static void