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GXIO(4) NetBSD Kernel Interfaces Manual GXIO(4)
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by Kimmo Suominen.
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gxio -- driver for Gumstix onboard I/O interface
gxio* at pxaip?
The gxio driver supports several different expansion boards. Those
boards have to be configured either by kernel option or using boot time
parameter. The supported extension boards is system specific.
gxio is available for XScale based Gumstix boards. To setup the expan-
sion board on boot the parameter ``expansion'' can be used. Addition-
ally, some XScale systems can connect two expansion boards. The second
board can be configured by the ``busheader'' boot parameter. The gxio
driver does not verify validity of both parameters.
For Xscale boards the following drivers are available for the peripher-
sm SMC91Cxx ethernet interface.
smsh SMSC LAN9118/LAN9218 ethernet interface.
GXIO_BLUETOOTH_ON_HWUART Uses HWUART pins for Bluetooth module.
The option only affects Xscale PXA250 based
Gumstix boards. If set, the serial port
HWUART is used to control Bluetooth module.
Otherwise no Bluetooth module is configured
for PXA250 boards.
GXIO_DEFAULT_EXPANSION Static configuration of expansion board.
If configured, the gxio of the processor is
setup for the board. If a boot parameter is
used, the boot value is used instead.
For Xscale based boards the following values
pxaip(4), sm(4), smsh(4)
The gxio driver first appeared in NetBSD 4.0.
The gxio driver was written by Takashi Kiyohara <kiyohara@NetBSD.org> and
Susumu Miki for WIDE Project and SOUM Corporation. This manual page was
contributed by Stephan Meisinger.
NetBSD 9.99 October 29, 2022 NetBSD 9.99