BBB+snappy: customizing dtb/hardware

[Alexander Sack]

On Mon, Feb 9, 2015 at 10:01 AM, Paolo Pisati
<paolo.pisati at canonical.com> wrote:
> On Sat, Feb 07, 2015 at 12:08:48PM -0500, Winston Smith wrote:
>>    1) What are the steps for customizing the hardware (e.g. 4 UARTS + a
>>    couple of GPIO pins), note I already have a working dtbo overlay for the
>>    hardware config, I just need to figure out how to apply it.
>
> rcnelson kernel tree for snappy is available here:
>
> http://kernel.ubuntu.com/git?p=ppisati/ubuntu-vivid.git;a=shortlog;h=refs/heads/snappy_beagle_3.8
>
> to get a working kernel, apply the kconfig fragments and compile as usual:
>
> $ ARCH=arm ./scripts/kconfig/merge_config.sh arch/arm/configs/YOURCONFIG_defconfig arch/arm/configs/snappy/*.config
>
> In case you built your own board (IOW you hardware won't change again in the
> future), a complete dtb that works with mainline is always the preferred
> solution.

Paolo you could imagine how to create an example/tutorial how to go
about creating your custom dtb for OUR kernel for a simple case like
this? Think that would help a lot!

>
>>    2) Are there any instructions on building a BBB/snappy image from scratch
>>    (I've seen the "porting snappy" blog post, but that relies on a "pre
>>    built" devices.tar.xz & kernel).
>
> something like this?
>
> https://ograblog.wordpress.com/2015/01/25/porting-ubuntu-snappy-to-a-yet-unsupported-armhf-board/
>
> --
> bye,
> p.
>
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