1.\" $NetBSD: s390rtc.4,v 1.1 2011/04/05 11:24:46 phx Exp $ 2.\" 3.\" Copyright (c) 2011 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 16.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 19.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25.\" POSSIBILITY OF SUCH DAMAGE. 26.\" 27.Dd April 5, 2011 28.Dt S390RTC 4 29.Os 30.Sh NAME 31.Nm s390rtc 32.Nd Seiko Instruments S-35390 real-time clock 33.Sh SYNOPSIS 34.Cd "s390rtc* at iic? addr 0x30" 35.Sh DESCRIPTION 36The 37.Nm 38driver provides support for the 39.Tn Seiko Instruments 40S-xx390 real-time clock chip. 41.Pp 42Access methods to retrieve and set date and time 43are provided through the 44.Em TODR 45interface defined in 46.Xr todr 9 . 47.Sh SEE ALSO 48.Xr iic 4 , 49.Xr todr 9 50.Sh HISTORY 51The 52.Nm 53device appeared in 54.Nx 6.0 . 55.Sh BUGS 56The driver does not support the chip's alarm features. 57