Re: Raspberry Pi 4B: Failed to create device link with soc:firmware:gpio

[Florian Fainelli]

On 2/25/2023 4:01 PM, Saravana Kannan wrote:
> On Sat, Feb 25, 2023 at 7:38 AM Florian Fainelli <f.fainelli@xxxxxxxxx> wrote:
> > Hi Saravana,
> >
> > Using v6.2-10217-ga93e884edf61v my Raspberry Pi 4B issues the following
> > for the "extended GPIO" provider:
> >
> > [    5.969855] uart-pl011 fe201000.serial: Failed to create device link
> > with soc:firmware:gpio
>
> Outside of this error, is it actually breaking anything? 

There is just this warning, there does not appear to be a functional issue.

> Also, can you
> pull in this patch and tell me what it says? I want to know what the
> flags are.
> https://lore.kernel.org/lkml/20230225064148.274376-1-saravanak@xxxxxxxxxx/
>
> Can you also change every pr_debug and dev_dbg in drivers/base/core.c
> to an info and then give me the logs as an attachment?

Sure will do.

> > The kernel configuration I am using can be found here:
> >
> > https://gist.github.com/ffainelli/4eb83740c25b10f75b54560f8c8febb1
> >
> > And the DTS is arch/arm*/boot/dts/bcm2711-rpi-4-b.dts
>
> Ah, is this yet another case of a DTS that's not upstream? Don't
> worry, I'll still look at it as it might point to some existing
> upstream issue too.

This is with the upstream DTS file under that directory, I used * to 
denote that this was used equally for both arm and arm64.

Thanks!
--
Florian