Re: [Xenomai-help] Kernel compilation procedures for imx51

[Flavio Alves <flavio.alves@domain.hid>]

Hello,

I'm still having problems in compiling the kernel with xenomai for the
imx51.

I'm having the following error:

  LD      .tmp_vmlinux1
arch/arm/plat-mxc/built-in.o: In function `mxc_dvfs_core_probe':
isp1504xc.c:(.devinit.text+0x334): undefined reference to
`cpufreq_trig_needed'
make: *** [.tmp_vmlinux1] Error 1

The steps used are the indicated at the xenomai patches README. The
defconfig that I'm using is imx51_defconfig, from the mainstream kernel.

I know that it is not a xenomai issue, but it is caused when I run make
menuconfig and disable the CPU frequency scaling feature, in order to
disable the warning (if the warning is present, xenomai is not
compiled).

In fact, I don't know which is the correct kernel configuration in order
to compile the kernel. I'm using imx51evk (which I believe is a
babage-based board).

Best regards,

Flavio

On Tue, 2010-08-03 at 20:18 +0200, Gilles Chanteperdrix wrote:
> Leandro Favarin wrote:
> > Hello,
> > 
> > I have successfully cross-compiled the linux-2.6-imx.git with
> > Xenomai's patches (adeos-ipipe-2.6.31-arm-1.16-01.patch and
> > adeos-ipipe-2.6.31-arm-1.15-01-imx51.patch, in this sequence) for
> > iMX51EVK. Does this kernel works with this board?
> 
> It has been tested on the Babbage board, but there should be no
> dependence on board code, except if the board has some custom
> multiplexed GPIOs not handled by the MXC generic code. So, the answer
> is: we do not know.
> 
> Note that some new versions of the patches have just been released in
> Xenomai 2.5.4, which include some ironing of the GPIOs, necessary if you
> intend to use the GPIOs concurrently in several drivers.
>