From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guenter Roeck Date: Wed, 12 Feb 2014 14:24:22 +0000 Subject: Re: [lm-sensors] Kernel errors for dme1737 Message-Id: <52FB8416.9070106@roeck-us.net> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: lm-sensors@vger.kernel.org On 02/12/2014 04:05 AM, Jean Delvare wrote: > On Wed, 12 Feb 2014 03:54:44 -0800, Guenter Roeck wrote: >> On 02/12/2014 03:07 AM, J=FCrgen Fuchsberger wrote: >>> i2cdump.txt >>> >>> >>> 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcd= ef >>> 00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ >>> 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ >>> 20: 36 00 c0 3a c4 80 27 80 ff ff ff ff ff ff ff ff 6.?:??'?........ >>> 30: ff ff ff 00 00 00 00 00 00 00 00 00 00 00 5c 8a ..............\? >>> 40: 0f db c0 20 ad d3 00 ff ad d3 ad d3 ad d3 81 7f ??? ??..???????? >>> 50: 81 7f 81 7f ff ff ff ff ff ff ff ff 62 62 62 cb ????........bbb? >>> 60: cb cb e0 00 80 80 80 80 80 80 64 64 64 44 40 00 ???.??????dddD@. >>> 70: ff ff ff 09 09 09 09 09 09 00 00 00 40 00 ec 10 ...??????...@.?? >>> 80: 7e a4 0e 00 d3 00 87 74 e0 00 4d 4d 0b 0b 0d 00 ~??.?.?t?.MM???. >>> 90: 04 04 04 04 0c 0c 0c 5a f1 c0 af ad d3 9d c0 00 ???????Z???????. >>> a0: 00 00 0c 00 02 ff ff 0b 0b fe ff fe ff ff ff ff ..?.?..???.?.... >>> b0: ff 00 00 00 00 00 28 28 0e 0e 0f 0f 00 00 00 00 ......((????.... >>> c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ >>> d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ >>> e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ >>> f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ >> >> That looks normal for the chip as far as I can see, and there are >> no errors. > > The board supports IPMI. I would guess that the errors happen when the > native driver and IPMI attempt to access the SMBus at the same time. > Yes, that would explanin the problem. > As usual, my recommendation is to either use IPMI or native drivers but > not mix. > Agreed. Guenter >> Wonder if the chip may have timing restrictions and not respond >> to queries under some circumstances (eg if registers are read >> too quickly back-to-back). Unfortunately I don't seem to be able >> to find a datasheet for it. Does anyone have one, by any chance ? > > I do have it, and Juerg does as well, but at least I am not allowed to > share it. I'll be happy to answer any question though. > _______________________________________________ lm-sensors mailing list lm-sensors@lm-sensors.org http://lists.lm-sensors.org/mailman/listinfo/lm-sensors