[PATCH 08/15] dm: core: Support multiple drivers with same compatibles

[Tom Rini]

On Tue, Nov 18, 2025 at 11:40:28AM +0100, Markus Schneider-Pargmann (TI.com) wrote:

> Currently once a driver matched the compatible string of a device, other
> drivers are ignored. If the first matching driver returns -ENODEV, no
> other possibly matching drivers are iterated with that compatible of the
> device. Instead the next compatible in the list of compatibles is
> selected, assuming only one driver matches one compatible at a time.
> 
> To be able to use the bind function to return -ENODEV and continue
> matching other drivers with the same compatible, move the for loop a bit
> to continue the for loop after -ENODEV was returned.
> 
> This is required for ti-musb-host and ti-musb-peripheral which both
> match on the same device but differ based on the dr_mode DT property.
> Depending on this property, the driver is either UCLASS_USB or
> UCLASS_USB_GADGET_GENERIc. By checking the DT property in the bind
> function and returning -ENODEV the other driver can probe instead.
> 
> Signed-off-by: Markus Schneider-Pargmann (TI.com) <msp at baylibre.com>
> ---
>  drivers/core/lists.c | 62 +++++++++++++++++++++++++++-------------------------
>  1 file changed, 32 insertions(+), 30 deletions(-)

This seems like a big generic change (with potential performance
impact?) for a rather specific case. I assume the linux kernel simply
doesn't have this issue by handling OTG differently. So is there some
other way we can handle this here?

-- 
Tom
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