On 23/05/14 17:14, Arnd Bergmann wrote: > On Friday 23 May 2014 17:10:35 Tomi Valkeinen wrote: >> On 23/05/14 16:13, Alexander Shiyan wrote: >> >>>> Would it be possible to add the new driver along the old driver, and use >>>> the new driver only for the boards you have, and for boards for which >>>> it's clear the the old driver is not working? This could be merged for 3.16. >>> >>> At this time yes, we can. But since I plan to add multiplatform support >>> for this SOC, this seems not possible. >>> I can try to make multiplatform support optional, then it could be done... >> >> Hmm, why is that not possible with multiplatform support? What do you >> mean with multiplatform support here? > > We are migrating all ARM platforms to allow building them into a single > kernel. However, that means that device drivers cannot access platform > specific header files any more and have to get hardware information from > DT or through platform data. The existing driver however uses mach/hardware.h. Ah, I see. So the problem is not with two different drivers for the same hardware device as such, but that in this case the older driver just doesn't play well with multiplatform. Tomi
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