Re: [Xenomai] [PATCH] Add support for SUNXI boards

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

On Thu, Apr 16, 2015 at 06:37:35PM +0200, Jan Kiszka wrote:
> On 2015-04-16 18:16, Gilles Chanteperdrix wrote:
> > On Fri, Apr 17, 2015 at 12:04:22AM +0800, GP Orcullo wrote:
> >> On Thu, Apr 16, 2015 at 9:19 PM, Gilles Chanteperdrix
> >> <gilles.chanteperdrix@xenomai.org> wrote:
> >>> On Thu, Apr 16, 2015 at 04:05:05PM +0800, GP Orcullo wrote:
> >>>> Tested on a Cubieboard2 with v3.16.7-ckt9 kernel.
> >>>
> >>> Does not sunxi have GPIO ?
> >>>
> >>> --
> >>>                                             Gilles.
> >>
> >> There's no GPIO driver in the mainline kernel. The original sunxi
> >> kernel has incomplete support for GPIOs.
> > 
> > Ok, what about timer and tsc? Basically, you should run through the
> > ARM porting guide and check every modification to be made. And if
> > you have done so, the commit message should mention it.
> 
> sunxi is pretty generic ARMv7-class in that regard, but double-checking
> is surely better.

armv7 does not mean a particular timer. Cortex A9 or cortex A15 do,
but different ones, and Cortex A8 does not for instance. The
processor we are talking about is probably not a cortex A9 since on
I-pipe, there is no timer or tsc defined on A9 when booting in UP
mode (and GP Orcullo is booting in UP mode). So my question is not
about "double-checking", it is rather the first check.

> 
> If time permits, I will give things a try on our Banana Pi - provided it
> is fine with such an old kernel (I only started with 3.19 on it).

-- 
					    Gilles.