bcm63xx kernel 5.10

[Daniel González Cabanelas]

I've made more tests, with previous patches together with the last
ones. Backported 22ca05b and a071912 without  luck.  Then I commented
out the macronix_nand_block_protection_support(chip) at the
nand_macronix driver, but this time it didn't boot:

[    0.837831] bcm6368_nand 10000200.nand: there is not valid maps for
state default
[    0.849939] nand: device found, Manufacturer ID: 0xc2, Chip ID: 0xf1
[    0.856524] nand: Macronix MX30LF1G18AC
[    0.860414] nand: 128 MiB, SLC, erase size: 128 KiB, page size:
2048, OOB size: 64
[    0.868274] bcm6368_nand 10000200.nand: detected 128MiB total,
128KiB blocks, 2KiB pages, 16B OOB, 8-bit, BCH-4
[    0.880972] Bad block table not found for chip 0
[    0.887741] Bad block table not found for chip 0
[    0.892523] Scanning device for bad blocks
[    1.390737] random: crng init done
[    1.558746] Bad block table written to 0x000007fe0000, version 0x01
[    1.566540] Bad block table written to 0x000007fc0000, version 0x01
[    1.605787] 9 fixed-partitions partitions found on MTD device brcmnand.0
[    1.612696] Creating 9 MTD partitions on "brcmnand.0":
[    1.617940] 0x000000000000-0x000000020000 : "cferom"
[    1.625694] 0x000000020000-0x0000000c0000 : "part_map"
[    1.633460] 0x0000000c0000-0x000000200000 : "cferam1"
[    1.643765] 0x000000200000-0x000000340000 : "cferam2"
[    1.653770] 0x000006920000-0x000006a60000 : "bootflag1"
[    1.661594] 0x000006a60000-0x000006ba0000 : "bootflag2"
[    1.669758] 0x000000520000-0x000006920000 : "wfi"
[    1.711952] ------------[ cut here ]------------
[    1.716699] WARNING: CPU: 1 PID: 1 at kernel/sched/core.c:3609
finish_task_switch+0x19c/0x1a8
[    1.721282] CPU 0 Unable to handle kernel paging request at virtual
address 00000000, epc == 00000000, ra == 80090e08
[    1.7213

And this was the last message from this unit. The router got bricked
and now there is no message from the bootloader at the console.
Sadly I won't be able to make more tests.

Regards