Caz Yokoyama c09f6b4d08 Revert "drm/i915/tgl: Add extra hdc flush workaround"
This reverts commit 36a6b5d964d995b536b1925ec42052ee40ba92c4.

The commit takes care Wa_1604544889 which was fixed on a0 stepping based on
a0 replan. So no SW workaround is required on any stepping now.

Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Caz Yokoyama <caz.yokoyama@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Fixes: 36a6b5d964d9 ("drm/i915/tgl: Add extra hdc flush workaround")
Link: https://patchwork.freedesktop.org/patch/msgid/1c751032ce79c80c5485cae315f1a9904ce07cac.1583359940.git.caz.yokoyama@intel.com
(cherry picked from commit 175c4d9b3b9a60b4ea0b8cd034011808c6a03b05)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2020-03-16 12:17:00 +02:00
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