Re: [PATCH V2 1/6] Documentation: add dts binding for X-Gene reboot dts node.

Feng Kan
2014-01-14T00:43:04Z

>
> Is this related to the standard ARM SCU that manages multiprocessor
> systems, or a different unit that uses the same name?

FKAN: You mean the snoop control unit in ARM. This is different from
that, the main function of this unit is clk control.

>
> Since this is a global register range with a variety of things in it,
> the best candidate IMHO would be to use the "syscon" driver. You can
> mark the device node as 'compatible="apm,xgene-scu","syscon"' to let
> it get picked up by the drivers/mfd/syscon driver, which creates
> a "regmap" structure for it.
>
> The reset driver then uses a DT reference with a phandle to the
> SCU node and calls syscon_regmap_lookup_by_phandle() to get the
> regmap. It can get the register number inside the regmap from DT
> as well and use the regmap API to perform the reset.

Thanks, will do.
>
> Arnd
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