[PATCH] [RFC] ARM: shmobile: Add early debugging support using SCIF(A)

[Wolfram Sang]

> >   - While the serial console on r8a7790 was switched from SCIF0 to
> >     SCIFA0 recently, I believe r8a7990 still needs to use SCIF0 instead
> >     of SCIFA0, as that's what the bootloader has configured.
> 
> Good point. Wolfram, any opinion about this ?

IMO we should only use SCIFA if it uses the same wires as SCIF. This
is the case for Lager (7790). Dunno about other boards.

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