From owner-freebsd-arm@freebsd.org  Sun Sep 27 18:43:29 2015
Return-Path: <owner-freebsd-arm@freebsd.org>
Delivered-To: freebsd-arm@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8318FA0A36A
 for <freebsd-arm@mailman.ysv.freebsd.org>;
 Sun, 27 Sep 2015 18:43:29 +0000 (UTC)
 (envelope-from sparvu@kronometrix.org)
Received: from mail.kronometrix.org (mail.kronometrix.org [54.72.43.199])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client CN "mail.kronometrix.org",
 Issuer "mail.kronometrix.org" (not verified))
 by mx1.freebsd.org (Postfix) with ESMTPS id 1AD13C94
 for <freebsd-arm@freebsd.org>; Sun, 27 Sep 2015 18:43:28 +0000 (UTC)
 (envelope-from sparvu@kronometrix.org)
Received: from [192.168.1.171] (89-27-2-202.bb.dnainternet.fi [89.27.2.202])
 (authenticated bits=0)
 by mail.kronometrix.org (8.14.9/8.14.9) with ESMTP id t8RIhPYd041165
 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO)
 for <freebsd-arm@freebsd.org>; Sun, 27 Sep 2015 18:43:25 GMT
 (envelope-from sparvu@kronometrix.org)
Reply-To: sparvu@kronometrix.org
Subject: Re: RBPI2 ds1307 rtc kernel panic
References: <5607C63D.2010203@kronometrix.org>
 <CAB=2f8y2Lcp5eHyc=nbgQ_-OZyJOrNwKqK4wstnH77kd47hZag@mail.gmail.com>
To: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>
From: Stefan Parvu <sparvu@kronometrix.org>
X-Enigmail-Draft-Status: N1110
Organization: kronometrix.org
Message-ID: <560838C7.6010500@kronometrix.org>
Date: Sun, 27 Sep 2015 21:43:19 +0300
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101
 Thunderbird/38.2.0
MIME-Version: 1.0
In-Reply-To: <CAB=2f8y2Lcp5eHyc=nbgQ_-OZyJOrNwKqK4wstnH77kd47hZag@mail.gmail.com>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-arm@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: "Porting FreeBSD to ARM processors." <freebsd-arm.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-arm>,
 <mailto:freebsd-arm-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arm/>
List-Post: <mailto:freebsd-arm@freebsd.org>
List-Help: <mailto:freebsd-arm-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-arm>,
 <mailto:freebsd-arm-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 27 Sep 2015 18:43:29 -0000


> The crash happens when you enable ntpd with an i2c RTC, this is a know issue.
> 
> There are two workarounds:
> 
> 1) sysctl machdep.rtc_save_period=0

this will do just fine. thanks for clarification and for advice. We want
to migrate from Raspbian to FreeBSD and we need to have a RTC hdw, for
our product Kronometrix.

One more thing, still a bit unclear to me: should I modify the

 sys/boot/fdt/dts/arm/rpi2.dts

 or

 sys/boot/fdt/dts/arm/bcm2836.dtsi

Im now recompiling the kernel after I have modified the rpi2.dts, as
Jukka pointed out. I did add to the sys/boot/fdt/dts/arm/rpi2.dts
Jukka's patch, for ds1307. Worked fine. (built the fbt table file and
install it under /boot/msdos)

-- 
Stefan Parvu <sparvu@kronometrix.org>