Re: [RFC 4/5] ARM: shmobile: r8a7790: let rst module allow watchdog resets if desired

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

On Tuesday 03 February 2015 13:12:31 Geert Uytterhoeven wrote:
> Hi Wolfram,
> 
> On Mon, Feb 2, 2015 at 12:13 PM, Wolfram Sang <wsa@the-dreams.de> wrote:
> >> It's slightly more complicated there, as we already have a driver for the
> >> SYSC on R-Mobile (rmobile-reset), and a device node can't be bound
> >> by both the syscon and the rmobile-reset driver.
> > 
> > Is it just complicated or is it an open issue how to handle that?
> 
> If the syscon drivers binds against the device, rmobile-reset can no
> longer bind against it. One solution is to convert rmobile-reset to use
> syscon, so both the rwdt and the rmobile-reset drivers would access it
> through syscon.
> But currently syscon provides access to the first register bank of a device
> only, while the RESCNT register is part of the second bank.

Shouldn't syscon be split into an API that individual drivers can implement 
and a default driver for syscon devices that just need to expose one register 
bank ?

> >> Do you have a better idea?
> > 
> > Nope. I also thought that something like syscon must be used if the
> > initialization in arch-code won't work. Still, I tried first with the
> > least intrusive version :)

-- 
Regards,

Laurent Pinchart