[yocto] [meta-raspberrypi] Back-porting raspberrypi2 or raspberrypi3 support to Yocto 1.7 Dizzy

Thomas A. F. Thorne MEng AUS MIET Thomas.Thorne at Net2Edge.com
Wed Nov 9 06:03:47 PST 2016

I would like an idea of how much work it could be to backport support
for a raspberrypi2 or raspberrypi3 to Yocto 1.7.  I am relatively knew
to Raspberry Pis and not that experienced in Yocto either. 

I can see that there is a raspberrypi Machine specification supplied in
the dizzy branch.  The raspberrypi2.conf and raspberrypi3.conf files do
not turn up till later on.  Is copying these two configuration files
back to a dizzy branch all that needs to happen? 

If I can get a bitbake to complete successfully is that really all there
is to it or are there a handful of runtime issues I might encounter
later?  I would not like to create a minefield for myself. 

The reason I am thinking about the feasibility of back-porting support
is that we have an existing product which is based on 1.7.  Either we:
develop everything on the older version of Yocto (which means
backporting Pi 2 or 3 support), develop on two versions of Yocto for
now, or try to port the existing product to something more modern line
Yocto 2.1 Krogoth. 

If nothing else I thought someone here might be able to give an
authoritative answer to how big a job the backport was likely to be so
we could way up our options.  I am happy to muddle a long and do the
work in isolation, this is not a request for anyone else to perform the
backport or publish it to a public branch (though I would obvious love
to be told it is already done ;-)). 


Thomas A. F. Thorne MEng. AUS MIET
*Software Engineer*


Tel: +44 3450 130 030 <tel:+443450130030>
Email: Thomas.Thorne at Net2Edge.com <mailto:Thomas.Thorne at Net2Edge.com>
Web: http://www.Net2Edge.com/ <http://www.Net2Edge.com>

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