[U-Boot] [PATCH 5/6] apalis_imx6: Avoid calling setup_display() from SPL code

[Fabio Estevam]

On Sat, Sep 23, 2017 at 10:01 AM, Fabio Estevam <festevam at gmail.com> wrote:
> Hi Stefano,
>
> On Sat, Sep 23, 2017 at 5:43 AM, Stefano Babic <sbabic at denx.de> wrote:
>
>> Max has already fixed apalis / colibri, see for example
>> http://patchwork.ozlabs.org/patch/817053/. I will apply Max's patches
>> and drop 5/6 from your series. Anyway, thanks for having thought to
>> these two boards, too.
>
> Yes, I saw Max's patches too. When I tried the same approach on
> cgtqmx6eval I got build failures:
>
> board/congatec/cgtqmx6eval/built-in.o: In function `setup_display':
> /home/fabio/u-boot-imx/board/congatec/cgtqmx6eval/cgtqmx6eval.c:632:
> undefined reference to `enable_ipu_clock'
> /home/fabio/u-boot-imx/board/congatec/cgtqmx6eval/cgtqmx6eval.c:633:
> undefined reference to `imx_setup_hdmi'
>
> It is true that Max's patches fix the warnings for Toradex boards, but
> if in future someone rework the IPU code like it is done in
> cgtqmx6eval, then failure would happen.
>
> So I thought that a more robust solution was to simply prevent making
> explicit calls to setup_display() from SPL like I did here.
>
> This also has the benefit to have the same solution across several mx6 boards.

One more advantage of my proposal is that it does not rely on adding
logic to include/configs/.

This is particularly important when someone moves the IPU related
config symbols into Kconfig.

Regards,

Fabio Estevam