On Wed, Oct 29, 2014 at 10:16:32AM +0000, Mark Brown wrote: > On Wed, Oct 29, 2014 at 08:57:01AM +0100, Steffen Trumtrar wrote: > > > So, that shouldn't be a problem though, as I already cooked up a driver for > > the L3 with all the ranges specified. The only thing I need to figure out > > before I will post it, is how to nicely handle the WO remap register. > > I think regmap might be able to handle this itself, but am not sure yet. > > It's supposed to be able to, not sure if anyone really tests that or not > though so it's possible bugs crept in. Most write only registers can > physically be read so actually come out as volatile rather than write > only even if functionally there is no reason to read. Ah, I think you might be actually right there. IIRC it IS possible to read from that register, but you only get 0s. So, I shot myself in the knee with specifying that register as write-only in my driver. Thanks, Steffen -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- 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
