RE: [PATCH/RFC 4/4] sh-sci: Derive regshift value from DT compatible value

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Hi Geert,

On Monday, August 06, 2018 1, linux-sh-owner@xxxxxxxxxxxxxxx wrote:
> Deriving the proper regshift value from the register block size is
> fragile (it may have been rounded up in DT, and the mapping granularity
> is usually PAGE_SIZE anyway), and turned out to be inappropriate for
> earlycon support (the size is not easily available).
> 
> On DT systems, derive it from the compatible value instead.
> This requires adding an entry for RZ/A2 serial ports, which use an
> atypical regshift value.

I had a simple patch to add support for CONFIG_DEBUG_LL for RZ/A2 
because earlycon never worked because of RZ/A2's different register locations.

I'll have to see how things change (better?) with this patch.


Chris
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