On Sat, Sep 6, 2014 at 3:53 PM, Mark Brown <broonie@xxxxxxxxxx> wrote: > On Fri, Sep 05, 2014 at 11:05:37AM +0200, Anders Berg wrote: > >> Well, the problem with adding this to the spi-pl022 driver (as a >> vendor specific extension) is that this IP block unfortunately isn't >> distinguishable from the standard ARM PL022 implementation (same >> values in the PrimeCell identification registers). That's why I went >> down the GPIO path... > > Would it not be more straightforward to just register it as a platform > device in this case, or use a separate OF ID in the DT? We appear to > specify a compatible string when registering AMBA devices even if we are > capable of identifying using the ID registers. I'll drop this gpio patch for now and submit a patch on the pl022 driver instead. I read the arm,primecell binding and learned that there is a property (arm,primecell-periphid) that can be used to override the HW PrimeCell ID. Seems like something to use here, right? /Anders -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
