[PATCH v2 08/13] mfd: Versatile Express system registers driver

Arnd Bergmann arnd at arndb.de
Wed Sep 19 07:17:45 EDT 2012

On Wednesday 19 September 2012, Pawel Moll wrote:
> On Tue, 2012-09-18 at 16:24 +0100, Arnd Bergmann wrote:
> > On Tuesday 18 September 2012, Pawel Moll wrote:
> Yes, but I2C devices are created by of_i2c_register_devices() which
> knows how to interpret the reg property. And here, as these are normal
> platform devices now (as you suggested), the of_platform_bus_create()
> will treat it as a normal address, translate it via ranges and create
> IORESOURCE_MEM out of it... And that's what I wanted to avoid. Maybe
> unnecessarily?

You are right, this is a bit nasty, it should not attempt to do this.
Basically the reg parsing logic has a hack to work around apply PowerMac
firmware that misses some "ranges" properties.

I think we should change the DT parsing code to not create those
resources if there is a bus that can't be translated.


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