Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) ==============================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) Linux I2C slave EEPROM backend
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) ==============================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) by Wolfram Sang <wsa@sang-engineering.com> in 2014-20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) This backend simulates an EEPROM on the connected I2C bus. Its memory contents
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) can be accessed from userspace via this file located in sysfs::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	/sys/bus/i2c/devices/<device-directory>/slave-eeprom
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) The following types are available: 24c02, 24c32, 24c64, and 24c512. Read-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) variants are also supported. The name needed for instantiating has the form
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 'slave-<type>[ro]'. Examples follow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 24c02, read/write, address 0x64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)   # echo slave-24c02 0x1064 > /sys/bus/i2c/devices/i2c-1/new_device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 24c512, read-only, address 0x42:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)   # echo slave-24c512ro 0x1042 > /sys/bus/i2c/devices/i2c-1/new_device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) You can also preload data during boot if a device-property named
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 'firmware-name' contains a valid filename (DT or ACPI only).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) As of 2015, Linux doesn't support poll on binary sysfs files, so there is no
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) notification when another master changed the content.