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The Linux kernel configuration item CONFIG_SENSORS_PCF8574 has multiple definitions:
drivers/i2c/chips/KconfigThe configuration item CONFIG_SENSORS_PCF8574:
CONFIG_EXPERIMENTAL && CONFIG_GPIO_PCF857X = "n"pcf8574If you say yes here you get support for Philips PCF8574 and PCF8574A chips. These chips are 8-bit I/O expanders for the I2C bus.
This driver can also be built as a module. If so, the module will be called pcf8574.
This driver is deprecated and will be dropped soon. Use drivers/gpio/pcf857x.c instead.
These devices are hard to detect and rarely found on mainstream hardware. If unsure, say N.
drivers/i2c/chips/KconfigThe configuration item CONFIG_SENSORS_PCF8574:
CONFIG_EXPERIMENTALpcf8574If you say yes here you get support for Philips PCF8574 and PCF8574A chips. These chips are 8-bit I/O expanders for the I2C bus.
This driver can also be built as a module. If so, the module will be called pcf8574.
These devices are hard to detect and rarely found on mainstream hardware. If unsure, say N.
Raw data from LKDDb:
lkddb i2c "pcf8574" : CONFIG_SENSORS_PCF8574 : drivers/i2c/chips/pcf8574.c # in 2.6.27–2.6.31lkddb i2c "pcf8574a" : CONFIG_SENSORS_PCF8574 : drivers/i2c/chips/pcf8574.c # in 2.6.27–2.6.31lkddb module pcf8574 CONFIG_SENSORS_PCF8574 : drivers/i2c/chips/Kconfig : "Philips PCF8574 and PCF8574A (DEPRECATED)" # in 2.6.6–2.6.31This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).
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Automatically generated (in year 2025). See also LKDDb sources on GitLab