[U-Boot] [PATCH] mx51evk: Add CONFIG_REVISION_TAG

[Fabio Estevam]

Hi Benoît,

On Tue, Sep 18, 2012 at 10:54 AM, Benoît Thébaudeau
<benoit.thebaudeau at advansee.com> wrote:

> Now, I'm totally confused. FSL's website shows a board that really looks like a
> "3-stack" board for its i.MX51 EVK:
> http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MCIMX51EVKJ&parentCode=i.MX515&fpsp=1

Yes, the board names are confusing indeed ;-)

Let me clarify:  This is the official mx51 development board that
Freescale makes available. The website calls it mx51evk, which is the
name that we use in mainline U-boot.

Yes, you can attach a separate LCD and a daughter card to this mx51evk.

When the FSL development team started to work on kernel and bootloader
for this board, they used the internal name for it: mx51 babbage.

The first mx51 board that was designed was called mx51 3stack and it
is more of an internal board to the FSL development teams.

Looking at FSL u-boot source code, you will see mx51_bbg and
mx51_3stack targets.

>
> Babbage here, different from i.MX51 EVK:
> http://ossguy.com/?p=317

This is a mx51evk indeed, but without a WVGA LCD and the daughter card
and put in a plastic shell.

> So, do you mean that mainline U-Boot board naming is broken for mx51evk?

No, the name in U-boot mainline is fine and it matches the name in the website.

Hopefully I managed to clarify the board name confusion.

But back to the original patch: all you need to do is to pass
set_board_rev(BOARD_REV2), so that the kernel can correctly identify
the board revision correctly.

Regards,

Fabio Estevam