Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/NXP Semiconductors/MIMXRT1021/USDHC1/TUNING_CTRL#0x0
Tuning Control
Tuning start
Tuning counter
TUNING_STEP
Data window
Standard tuning circuit and procedure enable
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SPDX-License-Identifier: BSD-3-Clause
https://github.com/cmsis-svd/cmsis-svd-data