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Sun, 14 Jul 2019 18:58:54 -0700 (PDT) Received: from mako.acadix.biz ([2605:a000:bc45:5f00:f2de:f1ff:fe17:e25f]) by smtp.gmail.com with ESMTPSA id c17sm13303033ioo.82.2019.07.14.18.58.53 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Sun, 14 Jul 2019 18:58:53 -0700 (PDT) Subject: Re: iichb0: I2C error To: Justin Hibbits Cc: "freebsd-ppc@freebsd.org" References: From: Jason Bacon Message-ID: <7cd57279-ee80-ef46-13e5-aa7f02f14bfa@gmail.com> Date: Sun, 14 Jul 2019 20:58:52 -0500 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Content-Language: en-US X-Rspamd-Queue-Id: 2822C706E3 X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=ijeHiCny; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of bacon4000@gmail.com designates 2607:f8b0:4864:20::d44 as permitted sender) smtp.mailfrom=bacon4000@gmail.com X-Spamd-Result: default: False [-4.53 / 15.00]; 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IP_SCORE(-0.78)[ip: (1.77), ipnet: 2607:f8b0::/32(-3.17), asn: 15169(-2.44), country: US(-0.06)] X-BeenThere: freebsd-ppc@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Porting FreeBSD to the PowerPC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Jul 2019 01:58:55 -0000 On 2019-07-14 19:46, Justin Hibbits wrote: > On Sat, Jul 13, 2019 at 9:32 AM Jason Bacon wrote= : >> >> On my PowerMac G5, I consistently get this error after a cold boot: >> >> iichb0: I2C error >> >> After a minute or so, the fans ramp up to maximum. >> >> The error also consistently goes away after a warm reboot. Nothing mo= re >> in dmesg: >> >> FreeBSD powermacg5.acadix bacon ~ 211: dmesg|grep iichb0 >> iichb0: mem 0xf8001000-0xf8001fff irq 42 on u= nin0 >> iicbus0: on iichb0 >> iichb0: I2C error >> iichb0: mem 0xf8001000-0xf8001fff irq 42 on u= nin0 >> iicbus0: on iichb0 >> >> No more runaway fans. >> >> Does this provide any clues about the cause? > Hi Jason, > > How recently did this start occurring? Would you be able to bisect > the builds from a known-good starting point? > > Thanks. > > - Justin I've never run a powerpc system until a few months ago, and this has=20 always been an issue on the PowerMac.=C2=A0 I just recently established t= he=20 pattern that it only happens after a cold boot, though.=C2=A0 I also have= an=20 iMac G5 that does not exhibit this issue.=C2=A0 Both are running=20 12.0-RELEASE.=C2=A0 If you think it might help, I can try a 13 snapshot a= t=20 some point. Cheers, =C2=A0=C2=A0=C2=A0 JB --=20 Earth is a beta site.