On 7/31/23 11:31, Miquel Raynal wrote:
Hi Marek,
marex@denx.de wrote on Sat, 29 Jul 2023 16:57:09 +0200:
Extend the driver core to perform lookup by both OF node and driver bound to the node. Use this to look up specific device instances to unbind from nodes in the unbind command. One example where this is needed is USB peripheral controller, which may have multiple gadget drivers bound to it. The unbind command has to select that specific gadget driver instance to unbind from the controller, not unbind the controller driver itself from the controller.
USB ethernet gadget usage looks as follows with this change. Notice the extra 'usb_ether' addition in the 'unbind' command at the end. " bind /soc/usb-otg@49000000 usb_ether setenv ethact usb_ether setenv loadaddr 0xc2000000 setenv ipaddr 10.0.0.2 setenv serverip 10.0.0.1 setenv netmask 255.255.255.0 tftpboot 0xc2000000 10.0.0.1:test.file unbind /soc/usb-otg@49000000 usb_ether "
Signed-off-by: Marek Vasut marex@denx.de
I am no longer getting wrong pointer dereferences, the SPL is working in recovery mode, TFTP "File not found" errors are no longer a problem and I did not experience any reset while tftp'ing regular files.
One last remaining request on my side is the need for using fastboot as well which does no longer work as-is:
=> fastboot usb 0 couldn't find an available UDC g_dnl_register: failed!, error: -19 exit not allowed from main input shell.
Can you advise what bind/unbind command would be necessary here?
Either 'unbind usb_ether' or run 'dm tree' -> look up the path to usb_ether in the tree (it will be hanging under usb_peripheral or some such), and then use 'unbind <that path>'.