Wifi and Ethernet seem to work fine. Haven't got USB working tough, kernel hangs on boot, so if anyone intend to run 15.05, skipping USB might be a good way to get things going...
Bootlog:
[ 0.000000] Linux version 3.18.27 (jon@owrt) (gcc version 4.8.3 (OpenWrt/Linaro GCC 4.8-2014.04 r49007) ) #3 Tue Apr 19 12:20:16 CEST 2016
[ 0.000000] SoC Type: Ralink RT3352 id:1 rev:6
[ 0.000000] bootconsole [early0] enabled
[ 0.000000] CPU0 revision is: 0001964c (MIPS 24KEc)
[ 0.000000] MIPS: machine is ZyXEL NBG-419N v2
[ 0.000000] Determined physical RAM map:
[ 0.000000] memory: 04000000 @ 00000000 (usable)
[ 0.000000] Initrd not found or empty - disabling initrd
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x00000000-0x03ffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x00000000-0x03ffffff]
[ 0.000000] Initmem setup node 0 [mem 0x00000000-0x03ffffff]
[ 0.000000] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
[ 0.000000] Primary data cache 16kB, 4-way, VIPT, no aliases, linesize 32 bytes
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
[ 0.000000] Kernel command line: console=ttyS0,57600 rootfstype=squashfs,jffs2
[ 0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[ 0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.000000] Writing ErrCtl register=0002d0e8
[ 0.000000] Readback ErrCtl register=0002d0e8
[ 0.000000] Memory: 61508K/65536K available (2406K kernel code, 118K rwdata, 480K rodata, 188K init, 181K bss, 4028K reserved)
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] NR_IRQS:256
[ 0.000000] CPU Clock: 384MHz
[ 0.000000] clocksource_of_init: no matching clocksources found
[ 0.000000] Calibrating delay loop... 255.59 BogoMIPS (lpj=1277952)
[ 0.070000] pid_max: default: 32768 minimum: 301
[ 0.080000] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.090000] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.100000] pinctrl core: initialized pinctrl subsystem
[ 0.110000] NET: Registered protocol family 16
[ 0.150000] rt2880_gpio 10000600.gpio: registering 24 gpios
[ 0.160000] rt2880_gpio 10000600.gpio: registering 24 irq handlers
[ 0.170000] Switched to clocksource MIPS
[ 0.180000] NET: Registered protocol family 2
[ 0.190000] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.200000] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.210000] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.220000] TCP: reno registered
[ 0.230000] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.240000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.260000] NET: Registered protocol family 1
[ 0.270000] rt-timer 10000100.timer: maximum frequency is 7812Hz
[ 0.280000] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 0.300000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.320000] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 0.340000] msgmni has been set to 120
[ 0.370000] io scheduler noop registered
[ 0.380000] io scheduler deadline registered (default)
[ 0.390000] ralink-usb-phy usbphy: invalid resource
[ 0.400000] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
[ 0.420000] console [ttyS0] disabled
[ 0.430000] 10000c00.uartlite: ttyS0 at MMIO 0x10000c00 (irq = 20, base_baud = 2500000) is a 16550A
[ 0.440000] console [ttyS0] enabled
[ 0.440000] console [ttyS0] enabled
[ 0.460000] bootconsole [early0] disabled
[ 0.460000] bootconsole [early0] disabled
[ 0.480000] m25p80 spi32766.0: mx25l6405d (8192 Kbytes)
[ 0.500000] 4 ofpart partitions found on MTD device spi32766.0
[ 0.510000] Creating 4 MTD partitions on "spi32766.0":
[ 0.520000] 0x000000000000-0x000000030000 : "u-boot"
[ 0.530000] 0x000000030000-0x000000040000 : "u-boot-env"
[ 0.540000] 0x000000040000-0x000000050000 : "factory"
[ 0.550000] 0x000000050000-0x000000800000 : "firmware"
[ 0.610000] 2 uimage-fw partitions found on MTD device firmware
[ 0.620000] 0x000000050000-0x0000001593ad : "kernel"
[ 0.630000] 0x0000001593ad-0x000000800000 : "rootfs"
[ 0.640000] mtd: device 5 (rootfs) set to be root filesystem
[ 0.660000] 1 squashfs-split partitions found on MTD device rootfs
[ 0.670000] 0x0000003f0000-0x000000800000 : "rootfs_data"
[ 0.690000] ralink_soc_eth 10100000.ethernet eth0: ralink at 0xb0100000, irq 5
[ 0.700000] rt2880_wdt 10000120.watchdog: Initialized
[ 0.710000] TCP: cubic registered
[ 0.720000] NET: Registered protocol family 17
[ 0.730000] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
[ 0.750000] 8021q: 802.1Q VLAN Support v1.8
[ 0.790000] VFS: Mounted root (squashfs filesystem) readonly on device 31:5.
[ 0.810000] Freeing unused kernel memory: 188K (802f1000 - 80320000)
[ 2.310000] rt305x-esw 10110000.esw: link changed 0x08
[ 3.210000] init: Console is alive
[ 3.220000] init: - watchdog -
[ 6.340000] usbcore: registered new interface driver usbfs
[ 6.350000] usbcore: registered new interface driver hub
[ 6.370000] usbcore: registered new device driver usb
[ 6.400000] SCSI subsystem initialized
[ 6.410000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 6.430000] ohci-platform: OHCI generic platform driver
[ 6.440000] ohci-platform 101c1000.ohci: Generic Platform OHCI controller
[ 6.450000] ohci-platform 101c1000.ohci: new USB bus registered, assigned bus number 1
and then no more...
Alternate ending with usb2...
[ 0.810000] Freeing unused kernel memory: 188K (802f1000 - 80320000)
[ 2.320000] rt305x-esw 10110000.esw: link changed 0x08
[ 3.170000] init: Console is alive
[ 3.180000] init: - watchdog -
[ 7.640000] usbcore: registered new interface driver usbfs
[ 7.650000] usbcore: registered new interface driver hub
[ 7.660000] usbcore: registered new device driver usb
[ 7.850000] SGI XFS with security attributes, no debug enabled
[ 7.880000] SCSI subsystem initialized
[ 7.900000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 7.920000] ehci-platform: EHCI generic platform driver
[ 7.930000] ehci-platform 101c0000.ehci: EHCI Host Controller
[ 7.940000] ehci-platform 101c0000.ehci: new USB bus registered, assigned bus number 1
and then no more...
(Last edited by jonojen on 19 Apr 2016, 20:12)