Mt7612e causes system hang up

Openwrt version: 19.07.5
mt76 version：mt76-2020-03-10-08054d5a
Hardware：My own development board using mt7628an + mt7612e

When the serial port prints "mt76x2e 0000:01:00.0: Build Time: 201507311614____", the system is hung up, the serial port can not input and output, can not enter the page, the whole system is blocked in the mt7612e program.

log ：

[ 0.000000] Linux version 4.14.209 (ubuntu@ubuntu) (gcc version 7.5.0 (OpenWrt GCC 7.5.0 r11257-5090152ae3)) #0 Sun Dec 6 07:31:03 2020
[ 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 Wavlink WL-WN575A3
[ 0.000000] Determined physical RAM map:
[ 0.000000] memory: 04000000 @ 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 0x0000000000000000-0x0000000003ffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000000000-0x0000000003ffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000003ffffff]
[ 0.000000] random: get_random_bytes called from start_kernel+0x90/0x47c with crng_init=0
[ 0.000000] Built 1 zonelists, 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=00036450
[ 0.000000] Readback ErrCtl register=00036450
[ 0.000000] Memory: 58696K/65536K available (3715K kernel code, 168K rwdata, 868K rodata, 1192K init, 200K bss, 6840K 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
[ 0.015375] Calibrating delay loop... 385.84 BogoMIPS (lpj=1929216)
[ 0.087604] pid_max: default: 32768 minimum: 301
[ 0.096949] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.109909] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.129576] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.148950] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 0.161047] pinctrl core: initialized pinctrl subsystem
[ 0.172350] NET: Registered protocol family 16
[ 0.289241] mt7620-pci 10140000.pcie: Port 0 N_FTS = 1b105000
[ 0.450309] PCI host bridge /pcie@10140000 ranges:
[ 0.459659] MEM 0x0000000020000000..0x000000002fffffff
[ 0.469971] IO 0x0000000010160000..0x000000001016ffff
[ 0.498215] mt7621_gpio 10000600.gpio: registering 32 gpios
[ 0.509407] mt7621_gpio 10000600.gpio: registering 32 gpios
[ 0.520534] mt7621_gpio 10000600.gpio: registering 32 gpios
[ 0.532356] PCI host bridge to bus 0000:00
[ 0.540323] pci_bus 0000:00: root bus resource [mem 0x20000000-0x2fffffff]
[ 0.553954] pci_bus 0000:00: root bus resource [io 0xffffffff]
[ 0.565615] pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
[ 0.579030] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
[ 0.595160] pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[ 0.611657] pci 0000:00:00.0: BAR 0: no space for [mem size 0x80000000]
[ 0.624655] pci 0000:00:00.0: BAR 0: failed to assign [mem size 0x80000000]
[ 0.638380] pci 0000:00:00.0: BAR 8: assigned [mem 0x20000000-0x200fffff]
[ 0.651797] pci 0000:00:00.0: BAR 9: assigned [mem 0x20100000-0x201fffff pref]
[ 0.666072] pci 0000:00:00.0: BAR 1: assigned [mem 0x20200000-0x2020ffff]
[ 0.679497] pci 0000:01:00.0: BAR 0: assigned [mem 0x20000000-0x200fffff 64bit]
[ 0.693957] pci 0000:01:00.0: BAR 6: assigned [mem 0x20100000-0x2010ffff pref]
[ 0.708212] pci 0000:00:00.0: PCI bridge to [bus 01]
[ 0.718000] pci 0000:00:00.0: bridge window [mem 0x20000000-0x200fffff]
[ 0.731433] pci 0000:00:00.0: bridge window [mem 0x20100000-0x201fffff pref]
[ 0.750235] clocksource: Switched to clocksource MIPS
[ 0.761349] NET: Registered protocol family 2
[ 0.770720] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.784422] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.796949] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.809658] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.821131] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.833743] NET: Registered protocol family 1
[ 0.845696] Crashlog allocated RAM at address 0x3f00000
[ 0.857588] workingset: timestamp_bits=30 max_order=14 bucket_order=0
[ 0.875969] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.887417] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 0.917251] io scheduler noop registered
[ 0.924927] io scheduler deadline registered (default)
[ 0.935881] Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled
[ 0.949511] console [ttyS0] disabled
[ 0.956541] 10000c00.uartlite: ttyS0 at MMIO 0x10000c00 (irq = 28, base_baud = 2500000) is a 16550A
[ 0.974374] console [ttyS0] enabled
[ 0.974374] console [ttyS0] enabled
[ 0.988105] bootconsole [early0] disabled
[ 0.988105] bootconsole [early0] disabled
[ 1.005241] spi-mt7621 10000b00.spi: sys_freq: 193333333
[ 1.029248] m25p80 spi0.0: w25q128 (16384 Kbytes)
[ 1.038659] 4 fixed-partitions partitions found on MTD device spi0.0
[ 1.051254] Creating 4 MTD partitions on "spi0.0":
[ 1.060761] 0x000000000000-0x000000030000 : "u-boot"
[ 1.071549] 0x000000030000-0x000000040000 : "u-boot-env"
[ 1.082978] 0x000000040000-0x000000050000 : "factory"
[ 1.093932] 0x000000050000-0x000000800000 : "firmware"
[ 1.107835] 2 uimage-fw partitions found on MTD device firmware
[ 1.119630] Creating 2 MTD partitions on "firmware":
[ 1.129483] 0x000000000000-0x0000001863e2 : "kernel"
[ 1.140309] 0x0000001863e2-0x0000007b0000 : "rootfs"
[ 1.150976] mtd: device 5 (rootfs) set to be root filesystem
[ 1.163746] 1 squashfs-split partitions found on MTD device rootfs
[ 1.176058] 0x000000670000-0x0000007b0000 : "rootfs_data"
[ 1.188384] libphy: Fixed MDIO Bus: probed
[ 1.207508] rt3050-esw 10110000.esw: link changed 0x00
[ 1.218626] mtk_soc_eth 10100000.ethernet: generated random MAC address a2:35:59:49:3e:4f
[ 1.235599] mtk_soc_eth 10100000.ethernet eth0: mediatek frame engine at 0xb0100000, irq 5
[ 1.253753] NET: Registered protocol family 10
[ 1.266678] Segment Routing with IPv6
[ 1.274128] NET: Registered protocol family 17
[ 1.283004] 8021q: 802.1Q VLAN Support v1.8
[ 1.300949] VFS: Mounted root (squashfs filesystem) readonly on device 31:5.
[ 1.321477] Freeing unused kernel memory: 1192K
[ 1.330472] This architecture does not have kernel memory protection.
[ 2.595103] init: Console is alive
[ 2.602180] init: - watchdog -
[ 2.720248] random: fast init done
[ 4.585658] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[ 4.741643] usbcore: registered new interface driver usbfs
[ 4.752690] usbcore: registered new interface driver hub
[ 4.763350] usbcore: registered new device driver usb
[ 4.779550] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 4.794480] ehci-platform: EHCI generic platform driver
[ 4.815192] phy phy-10120000.usbphy.0: remote usb device wakeup disabled
[ 4.828482] phy phy-10120000.usbphy.0: UTMI 16bit 30MHz
[ 4.838854] ehci-platform 101c0000.ehci: EHCI Host Controller
[ 4.850308] ehci-platform 101c0000.ehci: new USB bus registered, assigned bus number 1
[ 4.866127] ehci-platform 101c0000.ehci: irq 26, io mem 0x101c0000
[ 4.900329] ehci-platform 101c0000.ehci: USB 2.0 started, EHCI 1.00
[ 4.913754] hub 1-0:1.0: USB hub found
[ 4.921640] hub 1-0:1.0: 1 port detected
[ 4.932990] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 4.947104] ohci-platform: OHCI generic platform driver
[ 4.957786] ohci-platform 101c1000.ohci: Generic Platform OHCI controller
[ 4.971316] ohci-platform 101c1000.ohci: new USB bus registered, assigned bus number 2
[ 4.987117] ohci-platform 101c1000.ohci: irq 26, io mem 0x101c1000
[ 5.065189] hub 2-0:1.0: USB hub found
[ 5.073129] hub 2-0:1.0: 1 port detected
[ 5.084483] uhci_hcd: USB Universal Host Controller Interface driver
[ 5.124028] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[ 5.148921] init: - preinit -
[ 6.413728] rt3050-esw 10110000.esw: link changed 0x00
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
[ 9.967047] mount_root: jffs2 not ready yet, using temporary tmpfs overlay
[ 10.032765] urandom-seed: Seed file not found (/etc/urandom.seed)
[ 10.157314] procd: - early -
[ 10.163978] procd: - watchdog -
[ 10.734975] rt3050-esw 10110000.esw: link changed 0x08
[ 10.934229] procd: - watchdog -
[ 10.940914] procd: - ubus -
[ 11.203601] random: ubusd: uninitialized urandom read (4 bytes read)
[ 11.424198] random: ubusd: uninitialized urandom read (4 bytes read)
[ 11.437397] random: ubusd: uninitialized urandom read (4 bytes read)
[ 11.451158] procd: - init -
Please press Enter to activate this console.
[ 12.778655] kmodloader: loading kernel modules from /etc/modules.d/*
[ 13.110769] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 13.176800] Netfilter messages via NETLINK v0.30.
[ 13.222914] ip_set: protocol 6
[ 13.357826] usbcore: registered new interface driver cdc_wdm
[ 13.401795] Loading modules backported from Linux version v4.19.137-0-gc076c79e03c6
[ 13.417028] Backport generated by backports.git v4.19.137-1-0-g60c3a249
[ 13.483575] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 13.534711] nf_conntrack version 0.5.0 (1024 buckets, 4096 max)
[ 13.652298] urngd: v1.0.2 started.
[ 13.714854] usbcore: registered new interface driver usbserial
[ 13.726600] usbcore: registered new interface driver usbserial_generic
[ 13.739665] usbserial: USB Serial support registered for generic
[ 13.862960] xt_time: kernel timezone is -0000
[ 13.882540] usbcore: registered new interface driver cdc_ether
[ 13.913998] usbcore: registered new interface driver cdc_ncm
[ 13.941627] usbcore: registered new interface driver cdc_subset
[ 14.101902] usbcore: registered new interface driver huawei_cdc_ncm
[ 14.190161] random: crng init done
[ 14.196947] random: 7 urandom warning(s) missed due to ratelimiting
[ 14.222289] mt76_wmac 10300000.wmac: ASIC revision: 76280001
[ 15.272579] mt76_wmac 10300000.wmac: Firmware Version: 20151201
[ 15.284377] mt76_wmac 10300000.wmac: Build Time: 20151201183641
[ 15.320273] mt76_wmac 10300000.wmac: firmware init done
[ 15.546998] mt76x2e 0000:01:00.0: card - bus=0x1, slot = 0x0 irq=4
[ 15.559523] mt76x2e 0000:01:00.0: ASIC revision: 76120044
[ 15.649933] mt76x2e 0000:01:00.0: EEPROM data check failed: ffff
[ 16.560286] mt76x2e 0000:01:00.0: Invalid MAC address, using random address 22:09:51:fd:74:39
[ 16.669347] mt76x2e 0000:01:00.0: ROM patch build: 20141115060606a
[ 16.687425] mt76x2e 0000:01:00.0: Firmware Version: 0.0.00
[ 16.698368] mt76x2e 0000:01:00.0: Build: 1
[ 16.706494] mt76x2e 0000:01:00.0: Build Time: 201507311614____

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