[M] Change in coreboot[master]: mb/google/poppy/variant/nami - Ensure power cycle of FPMCU on startup

[Tarun Tuli (Code Review)]

Attention is currently required from: Paul Menzel, Eric Lai.

Tarun Tuli has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/73212 )

Change subject: mb/google/poppy/variant/nami - Ensure power cycle of FPMCU on startup
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Patch Set 4:

(4 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/73212/comment/fbde6697_c4ffa512 
PS3, Line 7: mb/google/poppy: Nami - invoke power cycle of FPMCU on startup
> Please use the common style for the variant prefix.

Done

https://review.coreboot.org/c/coreboot/+/73212/comment/b6858518_e74f7b7f 
PS3, Line 8:
> Please add a problem description in the beginning.

Done

https://review.coreboot.org/c/coreboot/+/73212/comment/31e5c42d_134da7b1 
PS3, Line 17: seconds
> Remove.

Done

https://review.coreboot.org/c/coreboot/+/73212/comment/d1f11a1a_191ca858 
PS3, Line 16: Confirmed FPMCU is still functional on Nami.
            : Confirmed power is off for 150ms seconds on boot.
            : Confirmed RCC_CSR of FPMCU indicates power cycle occurred.
            : Confirmed reset is de-asserted approx 3ms after power application
            : (target >2.5ms)
> Format as list?

Done