DTB overlay

DTB overlay

[Barbier, Renaud]

Is there a limit on the number of overlay that can be  loaded with the of_overlay command?

It does not complain if I load two overlays. However, when booting my FIT image, I get twice the message:
of_overlay: failed to copy symbols from overlay

Still all node modifications are added to the base device tree.

The error message is not displayed if I add only one overlay.





Cheers,
Renaud

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RE: DTB overlay

[Barbier, Renaud]

Forgot to mention, I am using v2020.03.

I will see if any newer code fix this error message issue

> -----Original Message-----
> From: barebox [mailto:barebox-bounces@lists.infradead.org] On Behalf Of
> Barbier, Renaud
> Sent: 19 May 2020 18:34
> To: barebox@lists.infradead.org
> Subject: DTB overlay
> 
> 
> 
> [**EXTERNAL SOURCE**]:Please verify the source before clicking link or
> opening attachment.
> 
> Is there a limit on the number of overlay that can be  loaded with the
> of_overlay command?
> 
> It does not complain if I load two overlays. However, when booting my FIT
> image, I get twice the message:
> of_overlay: failed to copy symbols from overlay
> 
> Still all node modifications are added to the base device tree.
> 
> The error message is not displayed if I add only one overlay.
> 
> 
> 
> 
> 
> Cheers,
> Renaud
> 
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox

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Re: DTB overlay

[Sascha Hauer]

Hi Renaud,

On Tue, May 19, 2020 at 05:33:33PM +0000, Barbier, Renaud wrote:
> Is there a limit on the number of overlay that can be  loaded with the of_overlay command?
> 
> It does not complain if I load two overlays. However, when booting my FIT image, I get twice the message:
> of_overlay: failed to copy symbols from overlay
> 
> Still all node modifications are added to the base device tree.
> 
> The error message is not displayed if I add only one overlay.

This commit seems to solve your issues at least partly:

| commit 7732d7669b5c54a5c17a6bab6706f6624da0f78e
| Author: Rouven Czerwinski <r.czerwinski@pengutronix.de>
| Date:   Fri Mar 6 09:38:11 2020 +0100
| 
|     of: overlay: rework error message for symbols
|     
|     Missing symbols for overlay or root tree are valid if the overlay only
|     adds paths to the device tree. The code handles this correctly, however
|     it still isues a WARNING for the missing symbols. Demote the warning to
|     info and move into the of_overlay_apply_symbols() function.
|     
|     Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
|     Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| 

Sascha

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