[FS#1515] Add Mediatek MT7628 EVB Support

Tue Apr 24 05:31:26 PDT 2018

A new Flyspray task has been opened.  Details are below. 

User who did this - laadayush (laadayush) 

Attached to Project - OpenWrt/LEDE Project
Summary - Add Mediatek MT7628 EVB Support
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Device - Mediatek MT7628 EVB(Skylabs SKW92_EVB)

Pulled the latest code from git till https://github.com/lede-project/source/commit/d089a5d7734d3a22213105b2af054a86b1af59ab and compiled image for MT7628 EVB. After sysupgrade, router is going into infinite boot loop. Below are the logs:-

## Booting image at bc050000 ...
   Image Name:   MIPS OpenWrt Linux-4.14.34
   Image Type:   MIPS Linux Kernel Image (lzma compressed)
   Data Size:    1453350 Bytes =  1.4 MB
   Load Address: 80000000
   Entry Point:  80000000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
No initrd
## Transferring control to Linux (at address 80000000) ...
## Giving linux memsize in MB, 64

Starting kernel ...

[    0.000000] Linux version 4.14.34 (sai at localhost.localdomain) (gcc version 7.3.0 (OpenWrt GCC 7.3.0 r6755-d089a5d)) #0 Mon Apr 23 20:07:22 2018
[    0.000000] Board has DDR2
[    0.000000] Analog PMU set to hw control
[    0.000000] Digital PMU set to hw control
[    0.000000] SoC Type: MediaTek MT7628AN ver:1 eco:2
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019655 (MIPS 24KEc)
[    0.000000] MIPS: machine is Mediatek MT7628AN evaluation board
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 02000000 @ 00000000 (usable)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x0000000000000000-0x0000000001ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000001ffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000001ffffff]
[    0.000000] random: get_random_bytes called from start_kernel+0x8c/0x474 with crng_init=0
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 8128
[    0.000000] Kernel command line: console=ttyS0,57600 rootfstype=squashfs,jffs2
[    0.000000] PID hash table entries: 128 (order: -3, 512 bytes)
[    0.000000] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Writing ErrCtl register=0004200e
[    0.000000] Readback ErrCtl register=0004200e
[    0.000000] Memory: 27636K/32768K available (3351K kernel code, 168K rwdata, 812K rodata, 204K init, 208K bss, 5132K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS: 256
[    0.000000] intc: using register map from devicetree
[    0.000000] CPU Clock: 580MHz
[    0.000000] timer_probe: no matching timers found
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6590553264 ns
[    0.000012] sched_clock: 32 bits at 290MHz, resolution 3ns, wraps every 7405115902ns
[    0.015369] Calibrating delay loop... 385.84 BogoMIPS (lpj=1929216)
[    0.087586] pid_max: default: 32768 minimum: 301
[    0.096933] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.109891] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.129057] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.148431] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.160527] pinctrl core: initialized pinctrl subsystem
[    0.171313] NET: Registered protocol family 16
[    0.182473] rt2880-pinmux pinctrl: invalid group "jtag" for function "gpio"
[    0.196160] rt2880-pinmux pinctrl: error claiming hogs: -22
[    0.207122] rt2880-pinmux pinctrl: could not claim hogs: -22
[    0.218448] rt2880-pinmux: probe of pinctrl failed with error -22
[    0.242329] random: fast init done
[    0.255327] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.266549] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.277656] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.292331] clocksource: Switched to clocksource MIPS
[    0.303427] NET: Registered protocol family 2
[    0.312836] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.326527] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.339049] TCP: Hash tables configured (established 1024 bind 1024)
[    0.351752] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.363210] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.375816] NET: Registered protocol family 1
[    0.387199] Crashlog allocated RAM at address 0x1f00000
[    0.398844] workingset: timestamp_bits=30 max_order=13 bucket_order=0
[    0.417112] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.428545] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.455909] io scheduler noop registered
[    0.463577] io scheduler deadline registered (default)
[    0.474503] Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled
[    0.487819] of_serial 10000c00.uartlite: could not find pctldev for node /pinctrl/uartlite, deferring probe
[    0.507239] cacheinfo: Failed to find cpu0 device node
[    0.517265] cacheinfo: Unable to detect cache hierarchy for CPU 0
[    0.529889] spi-mt7621 10000b00.spi: could not find pctldev for node /pinctrl/spi, deferring probe
[    0.548116] libphy: Fixed MDIO Bus: probed
[    0.568146] rt3050-esw 10110000.esw: link changed 0x00
[    0.578987] mtk_soc_eth 10100000.ethernet: generated random MAC address ca:8a:d9:04:b5:cc
[    0.595801] mtk_soc_eth 10100000.ethernet eth0: mediatek frame engine at 0xb0100000, irq 5
[    0.613903] NET: Registered protocol family 10
[    0.626234] Segment Routing with IPv6
[    0.633515] NET: Registered protocol family 17
[    0.642202] 8021q: 802.1Q VLAN Support v1.8
[    0.651092] of_serial 10000c00.uartlite: could not find pctldev for node /pinctrl/uartlite, deferring probe
[    0.670387] spi-mt7621 10000b00.spi: could not find pctldev for node /pinctrl/spi, deferring probe
[    0.689184] Warning: unable to open an initial console.
[    0.700108] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
[    0.714826] Please append a correct "root=" boot option; here are the available partitions:
[    0.731297] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[    0.748532] Rebooting in 1 seconds..

More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=1515