[mirror_ubuntu-bionic-kernel.git] / Documentation / i2c / slave-eeprom-backend

Linux I2C slave eeprom backend
==============================

by Wolfram Sang <wsa@sang-engineering.com> in 2014-15

This is a proof-of-concept backend which acts like an EEPROM on the connected
I2C bus. The memory contents can be modified from userspace via this file
located in sysfs:

	/sys/bus/i2c/devices/<device-directory>/slave-eeprom

As of 2015, Linux doesn't support poll on binary sysfs files, so there is no
notification when another master changed the content.
Commit	Line	Data
d0c892f5 WS	1	Linux I2C slave eeprom backend
	2	==============================
	3
	4	by Wolfram Sang <wsa@sang-engineering.com> in 2014-15
	5
	6	This is a proof-of-concept backend which acts like an EEPROM on the connected
	7	I2C bus. The memory contents can be modified from userspace via this file
	8	located in sysfs:
	9
2e049d61	10	/sys/bus/i2c/devices/<device-directory>/slave-eeprom
d0c892f5 WS	11
d0c892f5 WS	12	As of 2015, Linux doesn't support poll on binary sysfs files, so there is no
2e049d61	13	notification when another master changed the content.
d0c892f5	14