Re: [PATCH] sh-sci: add R8A7743/5 support

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Hi Chris,

On Wednesday 05 Oct 2016 13:50:18 Chris Brandt wrote:
> > There are 34 compatible strings defined, one per UART + SoC combination,
> > plus a set of more generic ones. So far, the driver handles the r7s72100
> > compatible string separately as the UART on that chip is quite peculiar,
> > but for all other SoCs we only need to match against
> 
> Just FYI...
> There are 2 different types of UARTS (SCI) on r7s72100: SCIF and SCI
> 
> Getting  the "SCI" ones to work takes some 'tweaking' of some registers in
> the interrupt controller that are outside of the scope of the SCI driver.
> Basically, the power on reset values for some IRQ signaling is wrong but
> can be adjusted with a register. At the moment, I've been fixing that in
> u-boot.
> 
> So in reality, a "renesas,sci-r7s72100" is probably needed too if you want
> to throw that one on the pile....

I'm totally fine adding compatible strings when it makes sense, what bothers 
me is a pile of compat strings to describe IP cores that are identical :-)

-- 
Regards,

Laurent Pinchart

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