Re: [PATCH v3 3/6] dm: core: Support multiple drivers with same compatibles

["Markus Schneider-Pargmann" <msp@baylibre.com>]

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Hi Dinesh,

On Wed Jan 21, 2026 at 5:45 PM CET, Dinesh Maniyam wrote:
[...]
>>
>> Previously, we were using glue/wrapper driver to support multiple drivers
>> with same compatibility.
>>
>> For example:
>>
>> In this file,
>> https://source.denx.de/u-boot/u-boot/-/blob/master/drivers/usb/dwc3/dwc3-generic.c
>>
>> look for|dwc3_glue_bind_common, why not use the similar implementation? |Why does/core DM /need to know about USB role selection?
>>
>> |lists_bind_fdt()| must remain simple and predictable

I can see dwc3 seems to use the parent devicetree node to bind the glue
driver, right?

Upstream am33xx.dtsi does not have a devicetree parent node that we
could bind to. The parent is of type ti,sysc which is not USB specific.
The uboot am33xx.dtsi did have a devicetree parent that was USB specific
and it was used before to bind the USB glue. But with OF_UPSTREAM I
can't use that anymore.

This is why I developed this patch, to be able let bind() return
-ENODEV. lists_bind_fdt() will remain predictable. Most drivers do not
return -ENODEV and will not be influenced by this change.

Best
Markus

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