Arnd Bergmann <arnd@xxxxxxxx> writes: > On Sunday 29 June 2014 20:32:20 Robert Jarzmik wrote: >> As the RFC posted in [1] didn't meet an unrivaled success for >> review, I'm posting this serie for PXA27x transition to clock >> framework. >> >> This transition is needed : >> - to enable device-tree drivers port, as clocks are needed almost >> everywhere >> - to enable the long term multi-platform kernel to support PXA >> >> As I had said before, this serie aims at : >> - keeping legacy platforms working (ie. without device-tree) >> - enable PXA27x to work with a device-tree kernel, and hence >> open the way to drivers conversion >> - be robust enough to support pxa25x and pxa3xx later inclusion >> with almost no change to clk-pxa-dt.c. >> >> As this serie is holding the rest of the device-tree drivers >> port, I'd like it to be reviewed, even it's an old unsexy >> platform. > > I have one basic question about this series: if pxa27x gets moved > to used the common-clk framework but the others (pxa25x, pxa26x, > pxa3xx, pxa93x) don't, does that imply that they become mutually > exclusiv at compile-time? Unfortunately yes, they become exclusive. The reason being that arch/arm/mach-pxa/clock.c defines the function "clk_enable()", which of course is also defined by the clock framework. > If so, do you plan to first complete all of them before merging > upstream, or do you intend to have one or more kernel releases > that don't allow building a combined kernel for all pxa platforms? I intend to have first only pxa27x. Then in a second stage pxa27x + pxa25x + pxa3xx. > I don't object to doing the latter, but if that is the plan, you > need to make that very clear in the changelog and have all the > relevant maintainers agree to that. OK, that would be Haojian then, I think he maintains all PXA platforms. Haojian, are you ok with that ? And BTW, does a combined kernel for PXA platforms even exists (mixing pxa3xx and pxa2xx for example) ? > Also (for my understanding) when you say that you plan to do > pxa25x and pxa3xx next, does that include pxa26x and pxa93x? I don't have the Technical Reference Manuals for these ones so the answer is no. And Google wasn't a great friend at providing them. > I assume it does as they are apparently minor revisions of the > former, but it's not completely clear from your description. My description doesn't mention them, as I have no information about them, nor any hardware to test on. Cheers. -- Robert -- 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
