From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jacek Drewniak Date: Thu, 26 Apr 2018 18:38:45 +0000 Subject: [Buildroot] enc28j60 ethernet module doesn't work on rpi0 In-Reply-To: References: Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net I've tested which versions works. It seems that last tagged 2018.02.1 still works but master doesn't. Here is diff: $ diff -r sdcard.master/1/ sdcard.2018.02.1/1 Binary files sdcard.master/1/[SYS]/Journal and sdcard.2018.02.1/1/[SYS]/Journal differ Only in sdcard.master/1/bin: arch Binary files sdcard.master/1/bin/busybox and sdcard.2018.02.1/1/bin/busybox differ Only in sdcard.master/1/bin: nuke Only in sdcard.master/1/bin: resume Only in sdcard.2018.02.1/1/dev: console Only in sdcard.2018.02.1/1/lib: firmware Only in sdcard.2018.02.1/1/lib: ld-uClibc-1.0.28.so Only in sdcard.master/1/lib: ld-uClibc-1.0.29.so Only in sdcard.2018.02.1/1/lib: libuClibc-1.0.28.so Only in sdcard.master/1/lib: libuClibc-1.0.29.so Only in sdcard.master/1/lib/modules: 4.14.29 Only in sdcard.2018.02.1/1/lib/modules: 4.9.79 Only in sdcard.master/1/sbin: run-init Binary files sdcard.master/1/usr/bin/getconf and sdcard.2018.02.1/1/usr/bin/getconf differ Only in sdcard.master/1/usr/bin: hexedit Only in sdcard.master/1/usr/bin: setfattr diff -r sdcard.master/1/usr/lib/os-release sdcard.2018.02.1/1/usr/lib/os-release 2c2 < VERSION=2018.05-git-00959-g2254a32 --- > VERSION=2018.02.1 4,5c4,5 < VERSION_ID=2018.05-git < PRETTY_NAME="Buildroot 2018.05-git" --- > VERSION_ID=2018.02.1 > PRETTY_NAME="Buildroot 2018.02.1" JD wt., 24 kwi 2018 o 21:19 Jacek Drewniak napisa?(a): > I've found something. I've tried previous version of buildroot: *git > checkout 2016.11* > I've built this particular version, done other steps I mentioned in > previous post, *and now it works*! (not completely, I have to configure > the interface now) but *drivers now are loaded during boot and eth0 > appeared. * > > It seems that problem is with loading modules at all. Now after `Starting > mdev...` I can see that others modules loaded: gpiomem, watchdog. > > My boot sequence: https://pastebin.com/aXsKu8TY > > Regards > Jacek > > wt., 24 kwi 2018 o 14:31 Jacek Drewniak napisa?(a): > >> Hello everyone! >> >> I have external enc28j60 connected through SPI to Raspberry Pi Zero but >> there is no eth0 interface available. >> >> *In this same hardware configuration eth0 works fine with Raspbian Lite.* >> >> >> Steps, which I've made: >> 1. Clone buildroot from official repo >> 2. make raspberrypi0_defconfig >> 3. Add BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV=y >> 4. Make and burn image into sd card >> 5. Add `enc28j60.dtbo` into overlays directory on boot partition >> 6. Add dtparam=spi=on and dtoverlay=enc28j60 into config.txt >> >> * Now I can see enc28j60 under: /proc/device-tree/soc/spi at 7e204000 >> * Driver module is present >> under: /lib/modules/4.14.29/kernel/drivers/net/ethernet/microchip/enc28j60.ko >> >> I have added eth0 to /etc/network/interfaces but during boot I can only >> get message `Starting network: ifup: ignoring unknown interface eth0` or >> `Starting network: ip: SIOCGIFFLAGS: No such device` >> >> Some facts: >> - ifconfig -a shows only lo interface >> - enc28j60.ko is not loaded during boot >> - I can modprobe enc28j60.ko and it appears in lsmod but nothing else >> happens (no eth0 in ifconfig) >> - Here it is my dmesg: https://pastebin.com/Jy2H9KU1 >> - Modinfo output: https://pastebin.com/xkDPY5Zr >> >> I found very similar story with happy end, but I have mdev enabled and it >> still doesn't work. >> >> http://buildroot-busybox.2317881.n4.nabble.com/Bug-9541-New-Platform-drivers-autoloading-from-info-in-device-tree-does-not-work-td153712.html >> >> Best regards >> Jacek Drewniak >> > -------------- next part -------------- An HTML attachment was scrubbed... URL: