tree d35295a7d137cd851107fff2fc32143ac630a176
parent 775aeff44774c6933d8f9c14e1f325d8acd03136
author Arnd Bergmann <arnd@arndb.de> 1171398938 +0100
committer Paul Mackerras <paulus@samba.org> 1171414204 +1100

[POWERPC] Open Firmware serial port driver

This can be used for serial ports that are connected to an
OF platform bus but are not autodetected by the lecacy
serial support.
It will automatically take over devices that come from the
legacy serial detection, which usually is only one device.

In some cases, rtas may be set up to use the serial port
in the firmware, which allows easier debugging before probing
the serial ports. In this case, the "used-by-rtas" property
must be set by the firmware. This patch also adds code to the
legacy serial driver to check for this.

Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>