Re: [RFC] irqchip: add support for LS1021A external interrupt lines

[Rasmus Villemoes]

On 2017-12-11 11:02, Alexander Stein wrote:

> Oh, and what is the content of register SCFG_SCFGREVCR?

Good point. On my board it's 0xffffffff, set even before U-boot starts,
and lots board support code in U-boot expects this. I can't immediately
find examples in the linux source code that actually writes to the scfg,
so I don't know if we already have that as an implicit assumption as
well. But it would be kind of nasty to have to make the code read
SCFG_SCFGREVCR and decide the bit pattern to use based on that -
especially since I wouldn't be able to test it.

Who thought such a magic switch could ever be a good idea?

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Rasmus Villemoes
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