kernelconfig_penguin
depends
CONFIG_ACPI
CONFIG_I2C

ACPI I2C Operation region support

configname: CONFIG_ACPI_I2C_OPREGION

Linux Kernel Configuration
└─> Device Drivers
└─> I2C support
└─> ACPI I2C Operation region support

Say Y here if you want to enable ACPI I2C operation region support.
Operation Regions allow firmware (BIOS) code to access I2C slave devices,
such as smart batteries through an I2C host controller driver.