Re: Device-tree node renames break barebox/kernel compatibility...

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Hi David,

On Tue, Jun 12, 2018 at 02:23:08PM +0200, David Jander wrote:
> 
> Hi Sascha,
> 
> I know this is old already, and I was surprised that I couldn't find any
> complaints about this yet, but I recently came across this patch in the kernel:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=df5cc9d0b42d15fa33b30440cca7a11ca7ba35a4
> 
> ...which was adopted in barebox as this:
> 
> https://git.pengutronix.de/cgit/barebox/patch/dts/src/arm/imx6qdl.dtsi?id=2e9cce8fb1f577088e2b20ae2f461130e13ad190
> 
> As I don't know the exact reason as to why this was necessary, or why this is
> an issue at all, I just wanted to point out the fact that this leads to some
> breakage in barebox new and old.

This issue is known and has led to
https://www.mail-archive.com/barebox@xxxxxxxxxxxxxxxxxxx/msg25189.html

> 
> The specific problem I observed is here:
> https://git.pengutronix.de/cgit/barebox/tree/net/eth.c#n299

of_get_reproducible_name()/of_find_node_by_reproducible_name() is used for
fixing up mtd partitions and state nodes, but not yet for the ethernet
devices because nobody noticed.

To fix you would have to get a reproducible name of the ethernet device
node from the barebox device tree using of_find_node_by_reproducible_name()
and then use of_find_node_by_reproducible_name() on the kernel device
tree.

Sascha


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