Re: [PATCH v4 3/3] arm64: dts: ti: Add support for Siemens IOT2050 boards

On 15:14-20210311, Jan Kiszka wrote:

[...]

quoted

See [1] compare the compatibles against
Documentation/devicetree/bindings -> I think you should describe what
your hardware really is though.

This SPI bus is routed to an Arduino connector. By default, userspace
(e.g. mraa) takes ownership and adds the desired logic for what is being
connected. We have no idea what shield or other extension the user adds,
though.

overlays look like the right approach for variable systems like these.
It is not exactly plug and play.. but it does provide a level of
flexibility that is helpful.

[..]

The problem here is not simple txt->yml conversion: There is no official
binding for spidev yet, just existing users and the driver waiting for them.

I think we should discuss in the spidev list to get it resolved.

quoted

Thanks.. While it might help me personally to get some on my internal
farm, it might be good to get them on kernelci as well on the longer
run.

Will keep that on the radar. I definitely want to get it into the CIP
LAVA lab which is testing LTS as well.

Cool.

Are we talking about spidev here? Then let's drop that node, but I do
need to know how to describe spidev properly

yes - the spidev is my problem. can you drop the node and repost? i cant
locally modify and hope it works.

Or is it about those other warnings coming from your dtsi files, now
being surfaced? If you can tell me how to resolve them, I can write patches.

I will look at the warnings later today.. I dont think they are
triggered by the board dts.

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D)/Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D