ravelo Posted July 4, 2020 Share Posted July 4, 2020 Hi all, I've read on the forum that support for usb gadget using the µ-usb port on the libre computer tritium needed a kernel reconfigure & recompile. I tried to start with that, but during configuration, I've seen full support already. So, was it supposed to just work ? I target armbian buster server variant. my need is to use IP over an usb (and power) cable between a linux machine (x86 and then arm) and a tritium h5 Thanks in advance 0 Quote Link to comment Share on other sites More sharing options...
ravelo Posted July 4, 2020 Author Share Posted July 4, 2020 this was my command line (host=ubuntu 18) ./compile.sh docker BOARD=tritium-h5 BRANCH=current KERNEL_ONLY=yes KERNEL_CONFIGURE=yes after 89minutes, all ended ok apparently, and which are the relevant files among.. Quote raxy@raxy-HP-ED-800-G1:~/Documents/build$ ls -l output/debs total 511620 -rw-r--r-- 1 root root 43976 juil. 4 20:44 armbian-config_20.08.0-trunk_all.deb -rw-r--r-- 1 root root 6493740 juil. 4 20:45 armbian-firmware_20.08.0-trunk_all.deb -rw-r--r-- 1 root root 126321152 juil. 4 20:49 armbian-firmware-full_20.08.0-trunk_all.deb drwxrwsr-x 2 root docker 4096 juil. 4 19:19 extra -rw-r--r-- 1 root root 58156 juil. 4 20:44 linux-dtb-current-sunxi64_20.08.0-trunk_arm64.deb -rw-r--r-- 1 root root 10973444 juil. 4 20:44 linux-headers-current-sunxi64_20.08.0-trunk_arm64.deb -rw-r--r-- 1 root root 34245536 juil. 4 20:44 linux-image-current-sunxi64_20.08.0-trunk_arm64.deb -rw-r--r-- 1 root root 345485224 juil. 4 20:44 linux-source-current-sunxi64_20.08.0-trunk_all.deb -rw-r--r-- 1 root root 253768 juil. 4 19:54 linux-u-boot-current-tritium-h5_20.08.0-trunk_arm64.deb at boot time, no usb0 is created, and g_ether is not loaded, as per commands below.. raxy@tritium:~$ ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 02:01:e9:b0:da:21 brd ff:ff:ff:ff:ff:ff inet 192.168.200.17/24 brd 192.168.200.255 scope global dynamic noprefixroute eth0 valid_lft 863982sec preferred_lft 863982sec inet6 2a01:e0a:592:5030:f482:2a40:5939:2721/64 scope global dynamic noprefixroute valid_lft 86384sec preferred_lft 86384sec inet6 fe80::c8cb:661b:7238:e753/64 scope link noprefixroute valid_lft forever preferred_lft forever raxy@tritium:~$ lsmod|grep g_ether raxy@tritium:~$ so, i manually loaded g_ether... raxy@tritium:~$ sudo modprobe g_ether [sudo] password for raxy: raxy@tritium:~$ lsmod|grep g_ether g_ether 16384 0 usb_f_rndis 36864 1 g_ether u_ether 28672 2 usb_f_rndis,g_ether libcomposite 61440 3 usb_f_rndis,g_serial,g_ether but still no trace of eth0, wtf !? so, i made the module load at boot time like this (as root)... cd /etc/modules-load.d/ echo "g_ether" >> modules.conf sync; reboot after reboot, lsmod shows g_ether, fine, but still no usb0, and i have this error in dmesg.. [ 5.496280] udc-core: couldn't find an available UDC - added [g_ether] to list of pending drivers again, wtf !? 0 Quote Link to comment Share on other sites More sharing options...
usual user Posted July 5, 2020 Share Posted July 5, 2020 17 hours ago, ravelo said: [ 5.496280] udc-core: couldn't find an available UDC - added [g_ether] to list of pending drivers USB Gadget is a device-independent kernel subsystem. For its operation it needs device specific UDC (USB Device Controller) support. E.g.: You at least missing proper hardware (DT) configuration and may be missing kernel UDC support. 0 Quote Link to comment Share on other sites More sharing options...
ravelo Posted July 5, 2020 Author Share Posted July 5, 2020 tks! I've see here https://github.com/armbian/build/blob/master/config/boards/tritium-h5.conf one config file where I see no visible issue, I assume that the device tree for this board is quite bug free nd complete, maybe that's an optimist assumption, so what woulkd you recommend us to do @usual user ? 0 Quote Link to comment Share on other sites More sharing options...
usual user Posted July 5, 2020 Share Posted July 5, 2020 1 hour ago, ravelo said: what woulkd you recommend us to do If I picked it out correctly, the USB IP of your h5 SOC will be driven by the musb driver. So check if your kernel config has all components for OTG support enabled and the DT is configured for peripheral mode. This is usually not the case with a default configuration because host mode is used more frequently. 0 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.