=> i2c mm 0x6B 0x09 1
i2c - I2C sub-system

Usage:
i2c bus [muxtype:muxaddr:muxchannel] - show I2C bus info
i2c crc32 chip address[.0, .1, .2] count - compute CRC32 checksum
i2c dev [dev] - show or set current I2C bus
i2c loop chip address[.0, .1, .2] [# of objects] - looping read of device
i2c md chip address[.0, .1, .2] [# of objects] - read from I2C device
i2c mm chip address[.0, .1, .2] - write to I2C device (auto-incrementing)
i2c mw chip address[.0, .1, .2] value [count] - write to I2C device (fill)
i2c nm chip address[.0, .1, .2] - write to I2C device (constant address)
i2c probe [address] - test for and show device(s) on the I2C bus
i2c read chip address[.0, .1, .2] length memaddress - read to memory
i2c write memaddress chip address[.0, .1, .2] length [-s] - write memory
          to I2C; the -s option selects bulk write in a single transaction
i2c flags chip [flags] - set or get chip flags
i2c olen chip [offset_length] - set or get chip offset length
i2c reset - re-init the I2C Controller
i2c speed [speed] - show or set I2C bus speed
=> i2c md 0x6B 0x09 1
0009: 19    .
=> i2c mm 0x6B 0x09 05 1
i2c - I2C sub-system

Usage:
i2c bus [muxtype:muxaddr:muxchannel] - show I2C bus info
i2c crc32 chip address[.0, .1, .2] count - compute CRC32 checksum
i2c dev [dev] - show or set current I2C bus
i2c loop chip address[.0, .1, .2] [# of objects] - looping read of device
i2c md chip address[.0, .1, .2] [# of objects] - read from I2C device
i2c mm chip address[.0, .1, .2] - write to I2C device (auto-incrementing)
i2c mw chip address[.0, .1, .2] value [count] - write to I2C device (fill)
i2c nm chip address[.0, .1, .2] - write to I2C device (constant address)
i2c probe [address] - test for and show device(s) on the I2C bus
i2c read chip address[.0, .1, .2] length memaddress - read to memory
i2c write memaddress chip address[.0, .1, .2] length [-s] - write memory
          to I2C; the -s option selects bulk write in a single transaction
i2c flags chip [flags] - set or get chip flags
i2c olen chip [offset_length] - set or get chip offset length
i2c reset - re-init the I2C Controller
i2c speed [speed] - show or set I2C bus speed
=> i2c md 0x6B 0x09 1
0009: 19    .
=> i2c md 0x6B 0x09 0x05 1
0009: 19 23 00 ea 17    .#...
=> i2c mw 0x6B 0x09.2 0x05 1
=> i2c md 0x6B 0x09 1
0009: 09    .
=> i2c md 0x6B 0x09 10
0009: 09 01 a4 01 f4 8e 01 2c 01 19 23 00 ea 17 3d a2    .......,..#...=.
=>
0019: 19 01 a4 01 f4 8e 01 2c 01 19 23 00 ea 17 3d a2    .......,..#...=.
=>
i2c: Error check busy bus: 0x8
Error reading the chip: -102
=>
Error reading the chip: 5
=>
0029: 29 01 a4 01 f4 2c 00 0a 01 19 23 00 ea 17 3d 82    )....,....#...=.
=> i2c probe
Valid chip addresses: 20 50 6B 7F
=>
i2c probe
Valid chip addresses: 20 50 6B 7F
=> i2c md 0x6B 0x09
U-Boot SPL 2024.04-lf_v2024.04+g6c4545203d1+p0 (Nov 15 2024 - 04:02:13 +0000)
Normal Boot
ELE firmware version 1.3.0-1c47a54d
upower_apd_inst_isr: entry
upower_init: soc_id=48
upower_init: version:11.11.13
upower_init: start uPower RAM service
user_upwr_rdy_callb: soc=b
user_upwr_rdy_callb: RAM version:12.18
Turning on switches...
Turn on switches ok
Turning on memories...
Turn on memories ok
Clearing DDR retention...
Clear DDR retention ok
[ERROR] DFI error. Please check DDR configuration

resetting ...