Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH 00/33] ARM: at91: Switch remaining SoCs and boards to CCF | Date | Tue, 01 Jul 2014 22:02:07 +0200 |
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On Tuesday 01 July 2014 19:56:01 Alexandre Belloni wrote: > On 01/07/2014 at 19:01:12 +0200, Arnd Bergmann wrote : > > On Tuesday 01 July 2014 18:48:51 Alexandre Belloni wrote: > > > On 01/07/2014 at 18:35:50 +0200, Arnd Bergmann wrote : > > > > If I read this right, disabling 'USE_OF' results in still using > > > > the old clock interface. Is that intentional? If you want to always > > > > use COMMON_CLK now, the above can probably be simplified to > > > > > > > > config AT91_PMC_UNIT > > > > def_bool !ARCH_AT91X40 > > > > select COMMON_CLK > > > > > > > > and all references to AT91_USE_OLD_CLK, COMMON_CLK_AT91 and > > > > OLD_CLK_AT91 be removed. > > > > > > Yeah, this is intentional we still have 30 or so boards that we have to > > > migrate to DT. Until then, we want to be able to boot a kernel without > > > CCF. The next step in the migration is to switch those boards to DT, > > > possibly using an hybrid DT/pdata approach until we can get rid of the > > > board files. Then, we will be able to get rid of the old clk > > > implementation (and a few other drivers still living in mach-at91). > > > > Ok, I see. Do you expect those 30 boards to work if COMMON_CLK_AT91 > > is enabled, or are there known problems with that? > > > > If you have reason to believe it doesn't work, maybe you can expose > > the selection of the clock interface to users, e.g. like > > > > We actually do the opposite, when a board without DT support is > selected, the old clock support is also selected even when also > selecting CONFIG_OF.
Ok, got it now. Yes, that makes sense.
I guess we can start doing the actual multiplatform enablement now, which would be only for the DT-enabled boards -- all of Kconfig.non_dt still has to depend on !ARCH_MULTIPLATFORM but we can make at91 either be built standalone (with board files) or multiplatform and still support all SAM9 and RM9200 SoCs but without board files.
Arnd
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