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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