1.\" $NetBSD: elansc.4,v 1.1 2002/08/12 03:45:25 thorpej Exp $ 2.\" 3.\" Copyright (c) 2002 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Jason R. Thorpe. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.Dd August 11, 2002 38.Dt ELANSC 4 39.Os 40.Sh NAME 41.Nm elansc 42.Nd AMD Elan SC520 System Controller driver 43.Sh SYNOPSIS 44.Cd elansc* at pci? dev ? function ? 45.Sh DESCRIPTION 46The 47.Nm 48driver supports the system controller of the AMD Elan SC520 microcontroller. 49The SC520 consists of an AMD Am5x86 processor core, integrated PCI host 50controller, and several standard on-chip devices, such as NS16550-compatible 51UARTs, real-time clock, and timers. 52.Pp 53The Elan SC520 also provides several special on-chip devices. The following 54are supported by the 55.Nm 56driver: 57.Bl -bullet 58.It 59Watchdog timer. The watchdog timer may be configured for a 1 60second, 2 second, 4 second, 8 second, 16 second, or 32 second 61expiration period. 62.El 63.Sh SEE ALSO 64.Xr wdogctl 8 65.Sh HISTORY 66The 67.Nm 68device first appeared in 69.Nx 2.0 . 70.Sh AUTHORS 71The 72.Nm 73driver was written by 74.An Jason R. Thorpe Aq thorpej@netbsd.org . 75.An Jasper Wallace 76provided the work-around for a hardware bug related to the watchdog timer 77in some steppings of the SC520 CPU. 78