Guillaume Gardet wrote: >> -----Original Message----- >> From: Ludwig Nussel <[email protected]> >> Sent: 01 September 2020 18:51 >> To: [email protected] >> Subject: [opensuse-arm] rpi to rpi via usb gadget >> >> Hi, >> >> I've tried to use the USB OTG features of the RPi4 to remote control an >> RPi3 with MicroOS 15.2 using pikvm. That works fine as soon as Linux is booted in >> the RPi3. Fails in U-Boot and therefore grub though. U-Boot doesn't detect the >> simulated devices. On the Pi4 the kernel throws error >> messages: >> [ 104.168251] configfs-gadget gadget: usb_ep_queue error on int endpoint -11 >> >> Is that an issue on our side in U-Boot or somewhere else? > > Could it be related to https://github.com/raspberrypi/firmware/issues/1322 ?
The pikvm website also mentions that the OTG mode doesn't work with some PC BIOSes¹ while an Arduino does the job. So maybe that OTG descriptor confuses them too? Is there a way to make the kernel not generate that descriptor to test? cu Ludwig [1]https://github.com/pikvm/pikvm#limitations -- (o_ Ludwig Nussel //\ V_/_ http://www.suse.com/ SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer HRB 36809 (AG Nürnberg) -- To unsubscribe, e-mail: [email protected] To contact the owner, e-mail: [email protected]
