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It runs through the drivers before > > > they're initialized and defers them if their suppliers are not available. The > > > GPIO and PWM drivers are able to follow the gpio-map and pwm-map properties > > > (through the of_parse_phandle_with_args_map() function), but from what I see, > > > device_links_check_suppliers() has no such mechanism. It follows the phandle to > > > the nexus connector node only, and since there's no compatible driver for it, > > > the function defers the consumer drivers used in the overlay. > > > > > > I think this is what is happening mainly because setting the > > > fw_devlink=permissive kernel parameter (which sets the DL_FLAG_SYNC_STATE_ONLY > > > flag) solved the issue, though I could be misunderstanding something. > > > > > > int device_links_check_suppliers(struct device *dev) > > > { > > > ... > > > list_for_each_entry(link, &dev->links.suppliers, c_node) { > > > ... > > > > > > if (link->status != DL_STATE_AVAILABLE && > > > !device_link_test(link, DL_FLAG_SYNC_STATE_ONLY)) { > > > > > > ... > > > device_links_missing_supplier(dev); > > > ret = dev_err_probe(dev, -EPROBE_DEFER, > > > "supplier %s not ready\n", dev_name(link->supplier)); > > > break; > > > } > > > WRITE_ONCE(link->status, DL_STATE_CONSUMER_PROBE); > > > } > > > ... > > > } > > > > > > Has this behavior been observed before? Do you know of any work being done that > > > addresses this? > > > > Does a dummy container driver (for debug) to proof your analyer? Let > > me to find time to debug it. > > > > Frank > > I made a dummy driver matching that compatible string, and yes, it did > solve the issue. Thank you very much. Let me think how to fix this problem. Nexus node should be direction overall. Frank > > Leonardo