GDIUMIIC(4)         OpenBSD Programmer's Manual (Loongson)         GDIUMIIC(4)

NAME
     gdiumiic - Gdium specific GPIO I2C controller

SYNOPSIS
     gdiumiic0 at gpio0 offset 6 mask 0x81
     gdiumiic0 at gpio0 offset 46 mask 0x03
     iic0 at gdiumiic0

DESCRIPTION
     The gdiumiic driver allows bit-banging an I2C bus as a master using two
     GPIO pins.  The first pin is used as a serial clock (SCL) signal and the
     second as a serial data (SDA).  Both GPIO pins must be able to drive an
     output and the SDA pin must be also able to read an input.

     The gdiumiic driver is derived from the gpioiic driver, using a different
     pin ordering, and knowledge of the Gdium I2C bus configuration.

SEE ALSO
     gpio(4), gpioiic(4), iic(4), intro(4)

AUTHORS
     The original gpioiic driver was written by Alexander Yurchenko
     <grange@openbsd.org>.

OpenBSD 4.7                    February 18, 2010                             1
