On 06/15/2017 11:43 AM, Ben Hutchings wrote: > Control: tag -1 moreinfo > > On Thu, 2017-06-15 at 08:34 +0200, Heinrich Schuchardt wrote: >> Package: debian-installer >> Version: stretch >> Severity: normal >> >> Dear Maintainer, >> >> the Lamobo R1 is an Arm system based on the Amlogic A20. >> The network interface of the A20 is connected to a switch. >> If the switch is not configured there is no external >> network access and subsequently a network install fails. >> >> On an installed system it is sufficient to have a line >> in /etc/modules: >> b53_mdio >> >> I suggest the following corrections to the installer: >> >> The initrd.img should include the b53_mdio module and its >> prerequisites b53_common and dsa_core plus aforementioned >> file /etc/modules. >> >> The installer should compare the content of >> /proc/device-tree/model >> to the string >> Lamobo R1 >> >> If this string is found, the file /etc/modules should be >> appended with b53_mdio on the installed system. > > Why is this necessary? It should load automatically. > > Ben. >
The device tree has a string: compatible = "brcm,bcm53125" Same string is in the b53_mdio MODULE_DEVICE_TABLE. So I would have guessed it should create a match in b53_mdio.c. But with linux-image-4.9.0-3-armmp the module is not loaded automatically. I have tested as follows: Remove b53_mdio from /etc/modules. sudo update-initramfs -k $(uname -r) -u sudo reboot ==> no network address assigned by DHCP sudo modprobe b53_mdio results in output b53_common: found switch: BCM53125, rev 4 Add b53_mdio to /etc/modules. sudo update-initramfs -k $(uname -r) -u sudo reboot ==> Network is available dmesg has these lines: [ +0.325134] libphy: mdio_driver_register: bcm53xx [ +0.005595] b53_common: found switch: BCM53125, rev 4 [ +0.013589] DSA: switch 0 0 parsed [ +0.003438] DSA: tree 0 parsed Best regards Heinrich
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