On 21 February 2013 15:40, Arnd Bergmann [off-list ref] wrote:

On Thursday 21 February 2013, javier Martin wrote:

quoted

We know about the existence of DT and the constant migration process
that is taking place towards it.

Moreover we are strongly interested in converting the Visstrim SM10
platform to DT. Unfortunately, there are several issues that need to
be solved so that Visstrim M10 can be fully converted to DT:
- full SoC camera DT support
- DT support for ov7670
- pinctrl support for i.MX27

Ok, I see. Full device tree support is certainly asking too much then.

quoted

Furthermore, we have limited resources at the moment and we have to
decide priorities. But having an hybrid platform-DT support is our
next task for Visstrim M10.

Ok, cool.

quoted

However, I understand your concern about new drivers having DT
support. Maybe a good approach could be that I added compile-tested
only DT support for this driver and remove platform support for
mainline submission (although we maintain it internally in our
repositories).

What do you think?

Sounds good. Since it sounds like the hardware is available in all
imx27 device, maybe someone else can test your driver on an imx27
board that already has partial DT support when you add it to
arch/arm/boot/dts/imx27.dtsi?

Yes, since the module is integrated in i.MX27 that seems the way to go.

Is there any reason why an imx27 based board would not support this
driver? Are there any other chips that could use it, e.g. imx25 or
imx6?

No, there's no reason for an i.mx27 board not to support this driver
since the module doesn't have any external interfaces.

I think other i.MX chips have similar devices but I am not sure to
what extent they are compatible or not. Probably Sascha Hauer or Shawn
Guo (already in CC) could tell better than me since they have a wider
view on the i.MX range.

Regards.
-- 
Javier Martin
Vista Silicon S.L.
CDTUC - FASE C - Oficina S-345
Avda de los Castros s/n
39005- Santander. Cantabria. Spain
+34 942 25 32 60
www.vista-silicon.com