2024-11-12 17:44:01 read - data: 
2024-11-12 17:44:01 send - data: 
 len:1
2024-11-12 17:44:02 read - data: 
nand - NAND sub-system

Usage:
nand info - show available NAND devices
nand device [dev] - show or set current device
nand read - addr off|partition size
nand write - addr off|partition size [blocks_per_sub_partition]
    read/write 'size' bytes starting at offset 'off'
    to/from memory address 'addr', skipping bad blocks.
nand read.raw - addr off|partition [count]
nand write.raw - addr off|partition [count]
    Use read.raw/write.raw to avoid ECC and access the flash as-is.
nand erase[.spread] [clean] off size - erase 'size' bytes from offset 'off'
    With '.spread', erase enough for given file size, otherwise,
    'size' includes skipped bad blocks.
nand erase.part [clean] partition - erase entire mtd partition'
nand erase.chip [clean] - erase entire chip'
nand bad - show bad blocks
nand dump[.oob] off - dump page
nand scrub [-y] off size | scrub.part partition | scrub.chip
    really clean NAND erasing bad blocks (UNSAFE)
nand markbad off [...] - mark bad block(s) at offset (UNSAFE)
nand biterr off - make a bit error at offset (UNSAFE)
nand otpr[.raw] addr off size - Read OTP Region
nand otpw[.raw] addr off size - Write OTP Region
    read/write 'size' bytes starting at OTP offset 'off'
    to/from memory address 'addr'
nand otplock - Lock OTP Region
nand write.1 - addr off|partition size
    write walking 1 pattern for quad mode debugging
nand drv[.X] 0|1 - Set driving level. X:gd
nand clk [new_clk]- Show/set current possible SPI CLK
nand do_ecc 1/0 - Enable or disable internal ecc. #do_ecc 0 (disable), do_ecc 1 (enable)
nand bbtread address - Check the block is good or bad in bbt(0x0:factory bad,0x2:running time bad,0x0f:good)
nand bbtsave address block_type- mark the block as bad to bbt(0x2:running time bad,0x0f:good)

MiIPC # 
2024-11-12 17:44:02 send - data: setenv bootdelay 3;
 len:20
2024-11-12 17:44:06 read - data: setenv bootdelay 3;
MiIPC # 
2024-11-12 17:44:06 send - data: printenv;
 len:10