From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Fuckner Subject: Re: Decode dimms on dual socket machines Date: Tue, 12 Apr 2011 14:52:21 +0200 Message-ID: <4DA44B05.906@fuckner.net> References: <4DA4250A.3060907@fuckner.net> <20110412132611.045ace21@endymion.delvare> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20110412132611.045ace21-R0o5gVi9kd7kN2dkZ6Wm7A@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Jean Delvare Cc: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-i2c@vger.kernel.org On 04/12/2011 01:26 PM, Jean Delvare wrote: Hi all, > Note that you will need a recent enough kernel (>= 2.6.36) to have > support for SMBus multiplexing. currently I use OpenSUSE11.4 with 2.6.37.1-1.2-default > FWIW, address 0x70 is used by the PCA954x multiplexers, so maybe this > is what you have (and a driver is available). > > At 0x2f is probably a W83793 or W83795 monitoring chip, supported by > the w83793 and w83795 drivers, respectively. Only use these dedicated > drivers if you do not intend to use the IPMI features of the board. > >> 18,1a,1c: jc42 temperature sensors >> 50,52,54: eeproms > Now I loaded the module test24:/media/i2c-tools/tools # lsmod |grep pca pca954x 3288 0 i2c_mux 2672 1 pca954x test24:/media/i2c-tools/tools # ll /sys/bus/i2c/devices/ total 0 lrwxrwxrwx 1 root root 0 Apr 12 14:26 0-0050 -> ../../../devices/pci0000:00/0000:00:1f.3/i2c-0/0-0050 lrwxrwxrwx 1 root root 0 Apr 12 14:26 0-0052 -> ../../../devices/pci0000:00/0000:00:1f.3/i2c-0/0-0052 lrwxrwxrwx 1 root root 0 Apr 12 14:26 0-0054 -> ../../../devices/pci0000:00/0000:00:1f.3/i2c-0/0-0054 lrwxrwxrwx 1 root root 0 Apr 12 13:54 i2c-0 -> ../../../devices/pci0000:00/0000:00:1f.3/i2c-0 Seems like this is what I need to know, but I don't know how to interpret it. Is it multiplexed on the GPIO Pin 52 and 53 at the W83795ADG? ftp://ftp.supermicro.com/utility/SuperoDoctorINI/AllMEMDIMM.ini Regards, Michael!