drm/xe: Add Wa_14015150844 for DG2 and Xe_LPG

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The workaround database tells us to set this bit, even though the bspec
indicates the bit doesn't exist on these platforms.  Since this is a
write-only register, we also can't read back its value to verify whether
it's actually working or not.  For now we'll trust that the workaround
database knows what it's talking about; if not, the hardware will just
ignore the attempt to write to a non-existent bit and it shouldn't cause
any problems.

Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Link: https://lore.kernel.org/r/20230727220920.2291913-2-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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Matt Roper 2023-07-27 15:09:21 -07:00 • committed by Rodrigo Vivi

parent 17d28aa8bd

commit c7e4a611f3

2 changed files with 12 additions and 0 deletions

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1

drivers/gpu/drm/xe/regs/xe_gt_regs.h

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11

drivers/gpu/drm/xe/xe_wa.c

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