> +       - reg-shift : registers offset shift (standard uart_port
field).
> +         Property is optional if regshift is zero.

I was hoping to get an idea of what is required here, or when I might
use it?

It looks like the ARCH=ppc code instantiates this with a reg-shift of
2...  Is this the expected value?  When would it be not zero? or not
two?

Steve


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