Wrtnode2p boot failed with 18.06

It works with LEDE 17.01.5,
but failed with 18.06.0 and 18.06.1

pinctrl problem?
How to debug, thanks.

Starting kernel ...



[    0.000000] Linux version 4.14.54 (buildbot@builds-03.infra.lede-project.org) (gcc version 7.3.0 (OpenWrt GCC 7.3.0 r7102-3f3a2c9)) #0 Mon Jul 30 16:25:17 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 WRTnode2P
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 08000000 @ 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 0x0000000000000000-0x0000000007ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000007ffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000007ffffff]
[    0.000000] random: get_random_bytes called from 0x8041a72c with crng_init=0
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 32512
[    0.000000] Kernel command line: console=ttyS0,115200 rootfstype=squashfs,jffs2
[    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
[    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Writing ErrCtl register=00015524
[    0.000000] Readback ErrCtl register=00015524
[    0.000000] Memory: 125280K/131072K available (3554K kernel code, 177K rwdata, 460K rodata, 152K init, 214K bss, 5792K 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: 575MHz
[    0.000000] timer_probe: no matching timers found
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6647862422 ns
[    0.000012] sched_clock: 32 bits at 287MHz, resolution 3ns, wraps every 7469508094ns
[    0.007550] Calibrating delay loop... 380.92 BogoMIPS (lpj=1904640)
[    0.073457] pid_max: default: 32768 minimum: 301
[    0.078155] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.084506] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.096823] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.106309] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.112269] pinctrl core: initialized pinctrl subsystem
[    0.118552] NET: Registered protocol family 16
[    0.125567] rt2880-pinmux pinctrl: invalid group "jtag" for function "gpio"
[    0.132311] rt2880-pinmux pinctrl: error claiming hogs: -22
[    0.137631] rt2880-pinmux pinctrl: could not claim hogs: -22
[    0.143243] rt2880-pinmux: probe of pinctrl failed with error -22
[    0.150825] Can't analyze schedule() prologue at 803745f0
[    0.255865] mt7620-pci 10140000.pcie: Port 0 N_FTS = 1b105000
[    0.410526] mt7620-pci 10140000.pcie: PCIE0 no card, disable it(RST&CLK)
[    0.416968] mt7620-pci: probe of 10140000.pcie failed with error -1
[    0.438107] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.443699] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.449318] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.458994] clocksource: Switched to clocksource MIPS
[    0.465040] NET: Registered protocol family 2
[    0.470239] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.476936] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.483119] TCP: Hash tables configured (established 1024 bind 1024)
[    0.489357] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.494960] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.501322] NET: Registered protocol family 1
[    0.508488] Crashlog allocated RAM at address 0x3f00000
[    0.514985] workingset: timestamp_bits=30 max_order=15 bucket_order=0
[    0.527131] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.532755] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.551071] io scheduler noop registered
[    0.554804] io scheduler deadline registered (default)
[    0.560757] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[    0.569507] of_serial 10000c00.uartlite: could not find pctldev for node /pinctrl/uartlite, deferring probe
[    0.578910] of_serial 10000d00.uart1: could not find pctldev for node /pinctrl/uart1, deferring probe
[    0.588208] cacheinfo: Failed to find cpu0 device node
[    0.593137] cacheinfo: Unable to detect cache hierarchy for CPU 0
[    0.599678] spi-mt7621 10000b00.spi: could not find pctldev for node /pinctrl/spi, deferring probe
[    0.608862] libphy: Fixed MDIO Bus: probed
[    0.627013] rt3050-esw 10110000.esw: link changed 0x00
[    0.632795] mtk_soc_eth 10100000.ethernet: generated random MAC address 12:66:d8:a9:c4:18
[    0.641397] mtk_soc_eth 10100000.ethernet eth0: mediatek frame engine at 0xb0100000, irq 5
[    0.651274] NET: Registered protocol family 10
[    0.659554] Segment Routing with IPv6
[    0.663152] NET: Registered protocol family 17
[    0.667424] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[    0.679945] 8021q: 802.1Q VLAN Support v1.8
[    0.684621] of_serial 10000c00.uartlite: could not find pctldev for node /pinctrl/uartlite, deferring probe
[    0.694128] of_serial 10000d00.uart1: could not find pctldev for node /pinctrl/uart1, deferring probe
[    0.703079] spi-mt7621 10000b00.spi: could not find pctldev for node /pinctrl/spi, deferring probe
[    0.712981] Warning: unable to open an initial console.
[    0.718634] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
[    0.725866] Please append a correct "root=" boot option; here are the available partitions:
[    0.733884] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[    0.742831] Rebooting in 1 seconds..
[05060D08][04060C0B]