[U-Boot] [PATCH] [build] Automatically build the device tree if DEV_TREE_SEPARATE is set

[Simon Glass]

Hi Mike,

On Tue, Nov 8, 2011 at 5:51 AM, Mike Frysinger <vapier at gentoo.org> wrote:
> On Tuesday 08 November 2011 04:15:32 Gabe Black wrote:
>> This change makes the u-boot "all" target build the separate device tree if
>> DEV_TREE_SEPARATE is set. This use of DEV_TREE_SEPARATE is consistent with
>> the one other use in the u-boot build system. It's at least expedient and
>> perhaps necessary to build the device tree this way since it's difficult
>> to know the value of $(obj) when invoking make.
>
> i don't see anyone else using DEV_TREE_SEPARATE.  we already have
> CONFIG_OF_SEPARATE which causes the .dtb to be generated.
>
> Simon: any idea what's up ?
> -mike
>

Yes, in the Chromium tree I put .dtb generation in the Makefile, since
it was planned for upstream. It was removed in this change:

https://gerrit.chromium.org/gerrit/#change,4267

So if we ignore that one, I don't think Gabe's change in this email is
necessary upstream, but we may need to consider a way to have
CONFIG_OF_SEPARATE not build a dtb. Let's see how we go.

Regards,
Simon