log信息如下，请各位大佬帮助分析一下原因，谢谢！
2.529206] sunxi-ohci 4200400.ohci1-controller: new USB bus registered, assigned bus number 2
[ 2.539202] sunxi-ohci 4200400.ohci1-controller: irq 60, io mem 0x04200400
[ 2.620848] hub 2-0:1.0: USB hub found
[ 2.625107] hub 2-0:1.0: 1 port detected
[ 2.630590] ubi0: attaching mtd3
[ 2.845887] usb 1-1: new high-speed USB device number 2 using sunxi-ehci
[ 3.015881] usb 1-1: device descriptor read/64, error -71
[ 3.182799] random: crng init done
[ 3.295881] usb 1-1: device descriptor read/64, error -71
[ 3.369681] ubi0: scanning is finished
[ 3.386703] ubi0: attached mtd3 (name "sys", size 251 MiB)
[ 3.392866] ubi0: PEB size: 262144 bytes (256 KiB), LEB size: 258048 bytes
[ 3.400643] ubi0: min./max. I/O unit sizes: 4096/4096, sub-page size 2048
[ 3.408304] ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
[ 3.416303] ubi0: good PEBs: 1004, bad PEBs: 0, corrupted PEBs: 0
[ 3.423154] ubi0: user volume: 8, internal volumes: 1, max. volumes count: 128
[ 3.431288] ubi0: max/mean erase counter: 2/1, WL threshold: 4096, image sequence number: 0
[ 3.440684] ubi0: available PEBs: 0, total reserved PEBs: 1004, PEBs reserved for bad PEB handling: 40
[ 3.451162] ubi0: background thread "ubi_bgt0d" started, PID 1079
[ 3.474547] get det_vbus is fail, -84
[ 3.478701] get id is fail, -84
[ 3.482252] otg manager soc@3000000:usbc0@0: soc@3000000:usbc0@0 supply usbc not found, using dummy regulator
[ 3.495474] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 3.496215] sunxi-ehci 4200000.ehci1-controller: ehci_irq: highspeed device disconnect
[ 3.513083] sunxi-ehci 4200000.ehci1-controller: ehci_irq: highspeed device connect
[ 3.524432] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[ 3.532477] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 3.536088] clk: Not disabling unused clocks
[ 3.542228] cfg80211: failed to load regulatory.db
[ 3.547006] ALSA device list:
[ 3.555636] No soundcards found.
[ 3.559482] alloc_fd: slot 0 not NULL!
[ 3.565929] usb 1-1: new high-speed USB device number 3 using sunxi-ehci
[ 3.565934] VFS: Cannot open root device "ubi0_5" or unknown-block(0,0): error -19
[ 3.565941] Please append a correct "root=" boot option; here are the available partitions:
[ 3.591431] 1f00 1024 mtdblock0
[ 3.591435] (driver?)
[ 3.598797] 1f01 3072 mtdblock1
[ 3.598800] (driver?)
[ 3.606154] 1f02 1024 mtdblock2
[ 3.606157] (driver?)
[ 3.613487] 1f03 257024 mtdblock3
[ 3.613489] (driver?)
[ 3.620832] b300 7565312 mmcblk0
[ 3.620835] driver: mmcblk
[ 3.628469] 1f04 504 mtdblock4
[ 3.628472] (driver?)
[ 3.635801] 1f05 252 mtdblock5
[ 3.635804] (driver?)
[ 3.643146] 1f06 252 mtdblock6
[ 3.643148] (driver?)
[ 3.650490] 1f07 252 mtdblock7
[ 3.650493] (driver?)
[ 3.657834] 1f08 5040 mtdblock8
[ 3.657837] (driver?)
[ 3.665166] 1f09 10080 mtdblock9
[ 3.665168] (driver?)
[ 3.672517] 1f0a 1764 mtdblock10
[ 3.672520] (driver?)
[ 3.679963] 1f0b 223776 mtdblock11
[ 3.679966] (driver?)
[ 3.687404] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[ 3.696680] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.4.61 #10
[ 3.703414] Hardware name: Generic DT based system
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