Re: Decode dimms on dual socket machines

[Michael Fuckner <michael-iWcS09LKDTLR7s880joybQ@public.gmane.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!