[U-Boot] Porting a freescale sabrelite-like board to master ?

[Eric Nelson <eric.nelson@boundarydevices.com>]

Hi Thierry,

On 02/22/2014 01:01 PM, Thierry Bultel wrote:
> Le 22/02/2014 20:20, Wolfgang Denk a ?crit :
>> Dear Thierry,
>>
>> In message <5308E4D1.5000509@free.fr> you wrote:
>>> The board I am working on, is based on the Freescale sabrelite board,
>>> the manufacturer provides
>>> support for it , as an about 1000 lines patch that applies to
>>> rel_imx_3.0.35_4.1.0
>>> (3.0.35_4.1.0 is the kernel version I am using)
>> The kernel version is actually totally uninteresting here.  What
>> matters is what U-Boot version you have.  Let me guess - it is some
>> v2009.x - i. e. 5 year old stuff?
>
> Dear Wolfgang,
>
> Sorry for the confusion. I should have been more specific.
> What I meant is that my current u-boot version is
> tag "rel_imx_3.0.35_4.1.0" from
> http://git.freescale.com/git/cgit.cgi/imx/uboot-imx.git
>
> If I was mentioning the kernel version, it is just to say that switching
> to a more recent kernel
> version is not an option, because we do not have a device tree BSP for it.
>

Support for SABRE Lite is in the main-line kernel as well, but that's
a completely separate topic.

>>> So what would be the easiest and time less costing option to achieve
>>> what I want to do ?
>> It is best to take current code (top of tree in git repository) and
>> port it to your hardware from scratch.  You can use your old code as
>> reference, for example how to set up pin muxing and such.  Otherwise
>> it is pretty much worthless.
 >
> If the sabrelite board would still be supported in master, it would be
> straightforward.
> So I am thinking about re-bringing support for sabrelite my branch, first.
>

It **is** still in master. It just uses board/boundary/nitrogen6x.c
as the implementation.

It doesn't look anything like the 2009.08 code base, because, as
Wolfgang said, that's very old.

Regards,


Eric