Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Alif Semiconductor/AE512F80F55D5AS_CM55_HE_View/DSI/DSI_PWR_UP#0x0
SHUTDOWNZ=Val_0x0
Power-up Control Register
This bit configures the controller either to power up or to reset.
0 (Val_0x0): Reset the controller
1 (Val_0x1): Power up the controller
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https://github.com/cmsis-svd/cmsis-svd-data