Messages in this thread | | | Date | Fri, 9 Dec 2011 15:15:12 +0100 | From | Uwe Kleine-König <> | Subject | Re: [PATCH] [RFC] pinctrl: add a driver for Energy Micro's efm32 SoCs |
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On Fri, Dec 09, 2011 at 01:55:16PM +0000, Arnd Bergmann wrote: > On Friday 09 December 2011, Uwe Kleine-König wrote: > > On Thu, Dec 08, 2011 at 11:55:53PM +0100, Arnd Bergmann wrote: > > > On Thursday 08 December 2011 23:40:57 Uwe Kleine-König wrote: > > > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > > > > --- > > > > Note that there is no support yet for efm32 in mainline, so ARCH_EFM32 > > > > isn't defined. > > > > > > Since the platform is not yet part of the architecture, it will have > > > to use device tree based probing when it gets added. I would suggest > > > only merging drivers for it that can deal with this and do not rely > > > on platform_data. > > > > I feared you will say that. These machines have at most 4MiB of RAM. > > I'll have to evaluate if dt is too heavy for them. > > What's the state of the platform code? Is this based on Catalin's > Cortex-M3 tree? I've heard a few people express interest in getting > various M3 based SoCs supported mainline and I think that would > be a good idea, but I would also expect that device tree is one > of the lesser problems here. Yes, I took a few patches from there and rebased them to 3.2-rc3. The patches I have from Catalin are:
131dbba Cortex-M3: Add base support for Cortex-M3 48cc6a8 Cortex-M3: Add support for exception handling 2aebf66 Cortex-M3: Add NVIC support 75bf249 Cortex-M3: Allow the building of Cortex-M3 kernel port 66dcc1e Cortex-M3: Add VFP support a541241 [ARM] Do not call flush_cache_user_range with mmap_sem held 6083ea7 ARM: Handle instruction cache maintenance fault properly
I didn't look into these deeply yet to check how ready they are for mainline, but my machine boots to a prompt (which doesn't allow to start anything because it doesn't have enough memory to allocate the stack for a new program. I will soon get a machine that has 4MiB of RAM instead of the 1MiB I have now).
Best regards Uwe
-- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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