Ah, sorry I was confused then Sure I'm willing and able to test!
For what it's worth, kernel log for a 5.10-based image:
[ 0.000000] Linux version 5.10.167 (builder@buildhost) (mipsel-openwrt-linux-musl-gcc (OpenWrt GCC 12.2.0 r22040-eeba2a67ca) 12.2.0, GNU ld (GNU Binutils) 2.39) #0 SMP Sun Feb 12 00:02:22 2023
[ 0.000000] SoC Type: MediaTek MT7621 ver:1 eco:3
[ 0.000000] printk: bootconsole [early0] enabled
[ 0.000000] CPU0 revision is: 0001992f (MIPS 1004Kc)
[ 0.000000] MIPS: machine is Arcadyan WE420223-99
[ 0.000000] Initrd not found or empty - disabling initrd
[ 0.000000] VPE topology {2,2} total 4
[ 0.000000] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
[ 0.000000] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[ 0.000000] MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x0000000000000000-0x0000000007ffffff]
[ 0.000000] HighMem empty
[ 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] On node 0 totalpages: 32768
[ 0.000000] Normal zone: 288 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 32768 pages, LIFO batch:7
[ 0.000000] percpu: Embedded 15 pages/cpu s30480 r8192 d22768 u61440
[ 0.000000] pcpu-alloc: s30480 r8192 d22768 u61440 alloc=15*4096
[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 32480
[ 0.000000] Kernel command line: console=ttyS0,57600 ubi.mtd=5 root=/dev/ubiblock0_0 rootfstype=squashfs,jffs2
[ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes, linear)
[ 0.000000] Writing ErrCtl register=00009500
[ 0.000000] Readback ErrCtl register=00009500
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] Memory: 118896K/131072K available (7032K kernel code, 630K rwdata, 1416K rodata, 1276K init, 243K bss, 12176K reserved, 0K cma-reserved, 0K highmem)
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] rcu: Hierarchical RCU implementation.
[ 0.000000] Tracing variant of Tasks RCU enabled.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[ 0.000000] NR_IRQS: 256
[ 0.000000] CPU Clock: 880MHz
[ 0.000000] clocksource: GIC: mask: 0xffffffffffffffff max_cycles: 0xcaf478abb4, max_idle_ns: 440795247997 ns
[ 0.000012] sched_clock: 64 bits at 880MHz, resolution 1ns, wraps every 4398046511103ns
[ 0.015857] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 4343773742 ns
[ 0.033811] Calibrating delay loop... 586.13 BogoMIPS (lpj=2930688)
[ 0.106130] pid_max: default: 32768 minimum: 301
[ 0.115438] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[ 0.129843] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[ 0.148091] rcu: Hierarchical SRCU implementation.
[ 0.157901] dyndbg: Ignore empty _ddebug table in a CONFIG_DYNAMIC_DEBUG_CORE build
[ 0.173478] smp: Bringing up secondary CPUs ...
[ 0.183212] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
[ 0.183223] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[ 0.183235] MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
[ 0.183306] CPU1 revision is: 0001992f (MIPS 1004Kc)
[ 0.243307] Synchronize counters for CPU 1: done.
[ 0.305425] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
[ 0.305434] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[ 0.305441] MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
[ 0.305485] CPU2 revision is: 0001992f (MIPS 1004Kc)
[ 0.364402] Synchronize counters for CPU 2: done.
[ 0.424754] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
[ 0.424763] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[ 0.424770] MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
[ 0.424820] CPU3 revision is: 0001992f (MIPS 1004Kc)
[ 0.483983] Synchronize counters for CPU 3: done.
[ 0.543595] smp: Brought up 1 node, 4 CPUs
[ 0.555854] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.575364] futex hash table entries: 1024 (order: 3, 32768 bytes, linear)
[ 0.589178] pinctrl core: initialized pinctrl subsystem
[ 0.601910] NET: Registered protocol family 16
[ 0.611816] thermal_sys: Registered thermal governor 'step_wise'
[ 0.612927] cpuidle: using governor teo
[ 0.638127] rt2880-pinmux pinctrl: there is not valid maps for state default
[ 0.662241] FPU Affinity set after 11720 emulations
[ 0.688794] clocksource: Switched to clocksource GIC
[ 0.700479] NET: Registered protocol family 2
[ 0.709455] IP idents hash table entries: 2048 (order: 2, 16384 bytes, linear)
[ 0.724669] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
[ 0.741318] TCP established hash table entries: 1024 (order: 0, 4096 bytes, linear)
[ 0.756538] TCP bind hash table entries: 1024 (order: 1, 8192 bytes, linear)
[ 0.770450] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.783231] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
[ 0.796122] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear)
[ 0.810249] NET: Registered protocol family 1
[ 0.818838] PCI: CLS 0 bytes, default 32
[ 0.828915] workingset: timestamp_bits=14 max_order=15 bucket_order=1
[ 0.845754] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.857289] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 0.877585] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[ 0.893949] mt7621_gpio 1e000600.gpio: registering 32 gpios
[ 0.905305] mt7621_gpio 1e000600.gpio: registering 32 gpios
[ 0.916558] mt7621_gpio 1e000600.gpio: registering 32 gpios
[ 0.928055] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[ 0.943156] printk: console [ttyS0] disabled
[ 0.951721] 1e000c00.uartlite: ttyS0 at MMIO 0x1e000c00 (irq = 19, base_baud = 3125000) is a 16550A
[ 0.969706] printk: console [ttyS0] enabled
[ 0.986201] printk: bootconsole [early0] disabled
[ 1.008597] spi-mt7621 1e000b00.spi: sys_freq: 220000000
[ 1.020825] spi-nor spi0.0: mx25l25635e (32768 Kbytes)
[ 1.031196] 12 fixed-partitions partitions found on MTD device spi0.0
[ 1.044036] Creating 12 MTD partitions on "spi0.0":
[ 1.053754] 0x000000000000-0x000002000000 : "ALL"
[ 1.064041] 0x000000000000-0x000000030000 : "Bootloader"
[ 1.075516] 0x000000030000-0x000000040000 : "Config"
[ 1.086273] 0x000000040000-0x000000050000 : "Factory"
[ 1.097235] 0x000000050000-0x000001fb0000 : "kernel"
[ 1.107995] 0x000000490000-0x000001fb0000 : "rootfs"
[ 1.118762] mtd: setting mtd5 (rootfs) as root device
[ 1.128954] mtdsplit: no squashfs found in "rootfs"
[ 1.138704] 0x000001000000-0x000001fb0000 : "Kernel2"
[ 1.149683] 0x000001440000-0x000001fb0000 : "RootFS2"
[ 1.160649] 0x000001fb0000-0x000001fc0000 : "glbcfg"
[ 1.171651] 0x000001fc0000-0x000001fd0000 : "board_data"
[ 1.183101] 0x000001fd0000-0x000001fe0000 : "glbcfg2"
[ 1.194192] 0x000001fe0000-0x000001ff0000 : "board_data2"
[ 1.249918] mt7530 mdio-bus:1f: MT7530 adapts as multi-chip module
[ 1.265974] mtk_soc_eth 1e100000.ethernet: generated random MAC address 96:47:f6:5c:a5:e7
[ 1.283023] mtk_soc_eth 1e100000.ethernet eth0: mediatek frame engine at 0xbe100000, irq 20
[ 1.299823] mtk_soc_eth 1e100000.ethernet: generated random MAC address 2e:d4:42:35:f5:e7
[ 1.316826] mtk_soc_eth 1e100000.ethernet swp0: mediatek frame engine at 0xbe100000, irq 20
[ 1.334747] i2c /dev entries driver
[ 1.344017] mt7621-pci 1e140000.pcie: host bridge /pcie@1e140000 ranges:
[ 1.357419] mt7621-pci 1e140000.pcie: No bus range found for /pcie@1e140000, using [bus 00-ff]
[ 1.374963] mt7621-pci 1e140000.pcie: MEM 0x0060000000..0x006fffffff -> 0x0000000000
[ 1.391261] mt7621-pci 1e140000.pcie: IO 0x001e160000..0x001e16ffff -> 0x0000000000
[ 1.407646] mt7621-pci 1e140000.pcie: Parsing DT failed
[ 1.420172] NET: Registered protocol family 10
[ 1.431010] Segment Routing with IPv6
[ 1.438400] NET: Registered protocol family 17
[ 1.447387] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 1.473572] 8021q: 802.1Q VLAN Support v1.8
[ 1.485385] mt7530 mdio-bus:1f: MT7530 adapts as multi-chip module
[ 1.519086] mt7530 mdio-bus:1f swp1 (uninitialized): PHY [mt7530-0:01] driver [MediaTek MT7530 PHY] (irq=25)
[ 1.543048] mt7530 mdio-bus:1f: configuring for fixed/rgmii link mode
[ 1.559920] DSA: tree 0 setup
[ 1.566119] rt2880-pinmux pinctrl: pcie is already enabled
[ 1.577151] mt7621-pci 1e140000.pcie: host bridge /pcie@1e140000 ranges:
[ 1.590518] mt7621-pci 1e140000.pcie: No bus range found for /pcie@1e140000, using [bus 00-ff]
[ 1.608040] mt7621-pci 1e140000.pcie: MEM 0x0060000000..0x006fffffff -> 0x0000000000
[ 1.624348] mt7621-pci 1e140000.pcie: IO 0x001e160000..0x001e16ffff -> 0x0000000000
[ 1.640726] mt7621-pci-phy 1e149000.pcie-phy: PHY for 0xbe149000 (dual port = 1)
[ 1.655797] mt7621-pci-phy 1e14a000.pcie-phy: PHY for 0xbe14a000 (dual port = 0)
[ 1.670788] mt7621-pci 1e140000.pcie: failed to parse bus ranges property: -22
[ 1.785412] mt7621-pci-phy 1e149000.pcie-phy: Xtal is 40MHz
[ 1.796528] mt7621-pci-phy 1e14a000.pcie-phy: Xtal is 40MHz
[ 1.907771] mt7621-pci 1e140000.pcie: pcie0 no card, disable it (RST & CLK)
[ 1.921645] mt7621-pci 1e140000.pcie: pcie2 no card, disable it (RST & CLK)
[ 1.935509] mt7621-pci 1e140000.pcie: PCIE1 enabled
[ 1.945224] mt7621-pci 1e140000.pcie: PCI coherence region base: 0x60000000, mask/settings: 0xf0000002
[ 1.963929] mt7621-pci 1e140000.pcie: PCI host bridge to bus 0000:00
[ 1.976603] pci_bus 0000:00: root bus resource [io 0x1e160000-0x1e16ffff]
[ 1.990312] pci_bus 0000:00: root bus resource [mem 0x60000000-0x6fffffff]
[ 2.004004] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 2.014932] pci_bus 0000:00: root bus resource [mem 0x60000000-0x6fffffff] (bus address [0x00000000-0x0fffffff])
[ 2.035243] pci 0000:00:00.0: [0e8d:0801] type 01 class 0x060400
[ 2.047221] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x7fffffff]
[ 2.059718] pci 0000:00:00.0: reg 0x14: [mem 0x60200000-0x6020ffff]
[ 2.072261] pci 0000:00:00.0: supports D1
[ 2.080245] pci 0000:00:00.0: PME# supported from D0 D1 D3hot
[ 2.093320] pci 0000:01:00.0: [14c3:7615] type 00 class 0x000280
[ 2.105339] pci 0000:01:00.0: reg 0x10: initial BAR value 0x00000000 invalid
[ 2.119395] pci 0000:01:00.0: reg 0x10: [mem size 0x00100000 64bit]
[ 2.132042] pci 0000:01:00.0: 2.000 Gb/s available PCIe bandwidth, limited by 2.5 GT/s PCIe x1 link at 0000:00:00.0 (capable of 4.000 Gb/s with 5.0 GT/s PCIe x1 link)
[ 2.163006] pci 0000:00:00.0: PCI bridge to [bus 01-ff]
[ 2.173436] pci 0000:00:00.0: bridge window [io 0x0000-0x0fff]
[ 2.185580] pci 0000:00:00.0: bridge window [mem 0x60000000-0x600fffff]
[ 2.199102] pci 0000:00:00.0: bridge window [mem 0x60100000-0x601fffff pref]
[ 2.213494] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[ 2.226719] pci 0000:00:00.0: BAR 0: no space for [mem size 0x80000000]
[ 2.239910] pci 0000:00:00.0: BAR 0: failed to assign [mem size 0x80000000]
[ 2.253779] pci 0000:00:00.0: BAR 8: assigned [mem 0x60000000-0x600fffff]
[ 2.267299] pci 0000:00:00.0: BAR 9: assigned [mem 0x60100000-0x601fffff pref]
[ 2.281685] pci 0000:00:00.0: BAR 1: assigned [mem 0x60200000-0x6020ffff]
[ 2.295208] pci 0000:00:00.0: BAR 7: assigned [io 0x1e160000-0x1e160fff]
[ 2.308759] pci 0000:01:00.0: BAR 0: assigned [mem 0x60000000-0x600fffff 64bit]
[ 2.323324] pci 0000:00:00.0: PCI bridge to [bus 01]
[ 2.333212] pci 0000:00:00.0: bridge window [io 0x1e160000-0x1e160fff]
[ 2.346728] pci 0000:00:00.0: bridge window [mem 0x60000000-0x600fffff]
[ 2.360254] pci 0000:00:00.0: bridge window [mem 0x60100000-0x601fffff pref]
[ 2.376127] ubi0: attaching mtd5
[ 2.389126] mt7530 mdio-bus:1f: Link is Up - 1Gbps/Full - flow control rx/tx
[ 2.413675] ubi0: scanning is finished
[ 2.433745] ubi0: attached mtd5 (name "rootfs", size 27 MiB)
[ 2.445076] ubi0: PEB size: 65536 bytes (64 KiB), LEB size: 65408 bytes
[ 2.458253] ubi0: min./max. I/O unit sizes: 1/256, sub-page size 1
[ 2.470566] ubi0: VID header offset: 64 (aligned 64), data offset: 128
[ 2.483581] ubi0: good PEBs: 434, bad PEBs: 0, corrupted PEBs: 0
[ 2.495542] ubi0: user volume: 2, internal volumes: 1, max. volumes count: 128
[ 2.509933] ubi0: max/mean erase counter: 3/1, WL threshold: 4096, image sequence number: 14579864
[ 2.527770] ubi0: available PEBs: 0, total reserved PEBs: 434, PEBs reserved for bad PEB handling: 0
[ 2.546005] ubi0: background thread "ubi_bgt0d" started, PID 458
[ 2.546110] UBI: block: volume size is not a multiple of 512, last 384 bytes are ignored!
[ 2.575404] block ubiblock0_0: created from ubi0:0(rootfs)
[ 2.594136] VFS: Mounted root (squashfs filesystem) readonly on device 254:0.
[ 2.612646] Freeing unused kernel memory: 1276K
[ 2.621725] This architecture does not have kernel memory protection.
[ 2.634578] Run /sbin/init as init process
[ 2.642740] with arguments:
[ 2.642747] /sbin/init
[ 2.642752] with environment:
[ 2.642757] HOME=/
[ 2.642762] TERM=linux
[ 3.033094] init: Console is alive
[ 3.040290] init: - watchdog -
[ 3.656196] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[ 3.715054] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[ 3.739163] init: - preinit -
[ 4.464068] random: jshn: uninitialized urandom read (4 bytes read)
[ 4.586293] random: jshn: uninitialized urandom read (4 bytes read)
[ 4.703241] random: jshn: uninitialized urandom read (4 bytes read)
[ 5.006467] mtk_soc_eth 1e100000.ethernet swp0: PHY [mdio-bus:00] driver [MediaTek MT7530 PHY] (irq=POLL)
[ 5.028387] mtk_soc_eth 1e100000.ethernet swp0: configuring for phy/rgmii link mode
[ 7.222095] UBIFS (ubi0:1): default file-system created
[ 7.233553] UBIFS (ubi0:1): Mounting in unauthenticated mode
[ 7.245171] UBIFS (ubi0:1): background thread "ubifs_bgt0_1" started, PID 601
[ 7.294079] UBIFS (ubi0:1): UBIFS: mounted UBI device 0, volume 1, name "rootfs_data"
[ 7.309733] UBIFS (ubi0:1): LEB size: 65408 bytes (63 KiB), min./max. I/O unit sizes: 8 bytes/256 bytes
[ 7.328439] UBIFS (ubi0:1): FS size: 23219840 bytes (22 MiB, 355 LEBs), journal size 1177344 bytes (1 MiB, 18 LEBs)
[ 7.349226] UBIFS (ubi0:1): reserved for root: 1096730 bytes (1071 KiB)
[ 7.362398] UBIFS (ubi0:1): media format: w5/r0 (latest is w5/r0), UUID 3DF21DE7-170D-41A1-89DF-E71DFDA24016, small LPT model
[ 7.387453] mount_root: overlay filesystem has not been fully initialized yet
[ 7.403376] mount_root: switching to ubifs overlay
[ 7.430339] urandom-seed: Seed file not found (/etc/urandom.seed)
[ 7.529472] procd: - early -
[ 7.535436] procd: - watchdog -
[ 8.148958] procd: - watchdog -
[ 8.155833] procd: - ubus -
[ 8.214056] random: ubusd: uninitialized urandom read (4 bytes read)
[ 8.229067] random: ubusd: uninitialized urandom read (4 bytes read)
[ 8.246242] random: ubusd: uninitialized urandom read (4 bytes read)
[ 8.263655] procd: - init -
[ 8.807639] kmodloader: loading kernel modules from /etc/modules.d/*
[ 9.016529] urngd: v1.0.2 started.
[ 9.049727] Loading modules backported from Linux version v6.1-rc8-0-g76dcd734eca2
[ 9.064876] Backport generated by backports.git v5.15.81-1-41-g02e352527db5
[ 9.196213] random: crng init done
[ 9.203142] random: 31 urandom warning(s) missed due to ratelimiting
[ 9.246942] mt7621-pci 1e140000.pcie: bus=1 slot=0 irq=22
[ 9.257828] pci 0000:00:00.0: enabling device (0006 -> 0007)
[ 9.269136] mt7615e 0000:01:00.0: enabling device (0000 -> 0002)
[ 9.293453] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 9.293491] ieee80211 phy0: copying sband (band 1) due to VHT EXT NSS BW flag
[ 9.298340] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
[ 9.298388] ieee80211 phy1: copying sband (band 1) due to VHT EXT NSS BW flag
[ 9.310607] mt7615e 0000:01:00.0: HW/SW Version: 0x8a108a10, Build Time: 20180518100604a
[ 9.537763] mt7615e 0000:01:00.0: N9 Firmware Version: _reserved_, Build Time: 20200814163649
[ 9.626384] mt7615e 0000:01:00.0: CR4 Firmware Version: _reserved_, Build Time: 20190415154149
[ 45.853230] mtk_soc_eth 1e100000.ethernet swp0: PHY [mdio-bus:00] driver [MediaTek MT7530 PHY] (irq=POLL)
[ 45.876734] mtk_soc_eth 1e100000.ethernet swp0: configuring for phy/rgmii link mode
[ 45.894227] br-lan: port 1(swp0) entered blocking state
[ 45.904918] br-lan: port 1(swp0) entered disabled state
[ 45.915957] device swp0 entered promiscuous mode
[ 45.947315] mtk_soc_eth 1e100000.ethernet eth0: configuring for fixed/rgmii link mode
[ 45.963903] mtk_soc_eth 1e100000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx
[ 45.971760] device eth0 entered promiscuous mode
[ 45.990567] mt7530 mdio-bus:1f swp1: configuring for phy/gmii link mode
[ 46.004373] 8021q: adding VLAN 0 to HW filter on device swp1
[ 46.018836] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 46.032343] br-lan: port 2(swp1) entered blocking state
[ 46.043215] br-lan: port 2(swp1) entered disabled state
[ 46.054796] device swp1 entered promiscuous mode
[ 47.989099] mtk_soc_eth 1e100000.ethernet swp0: Link is Up - 100Mbps/Full - flow control rx/tx
[ 48.006355] br-lan: port 1(swp0) entered blocking state
[ 48.016982] br-lan: port 1(swp0) entered forwarding state
[ 48.028215] IPv6: ADDRCONF(NETDEV_CHANGE): br-lan: link becomes ready