soc/mediatek/mt8192: pmic: unlock key protection before initial setting

We need to write some special values to key protection registers before
applying init_setting table and lp_setting table to PMIC. Otherwise,
those settings won't take effect.
After applying init_setting table and lp_setting table, we lock the
settings by writing zero to key protection registers.

Reference datasheet: MT6359_PMIC_Data_Sheet_V1.5.docx, RH-D-2018-0205.

BUG=b:172636735
BRANCH=none
TEST=boot asurada correctly

Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Change-Id: I593d4e02bf0b62ac297957caf4ae1c1837f1f38d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48954
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>

0 files changed, 0 insertions, 0 deletions