acrn-kernel/Documentation/i2c/busses/i2c-savage4

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Kernel driver i2c-savage4
Supported adapters:
* Savage4
* Savage2000
Authors:
Alexander Wold <awold@bigfoot.com>,
Mark D. Studebaker <mdsxyz123@yahoo.com>
Description
-----------
The Savage4 chips contain two I2C interfaces (aka a I2C 'master'
or 'host').
The first interface is used for DDC (Data Display Channel) which is a
serial channel through the VGA monitor connector to a DDC-compliant
monitor. This interface is defined by the Video Electronics Standards
Association (VESA). The standards are available for purchase at
http://www.vesa.org . The DDC bus is not yet supported because its register
is not directly memory-mapped.
The second interface is a general-purpose I2C bus. This is the only
interface supported by the driver at the moment.