[lm-sensors] looking for help with W83795ADG

Eddi De Pieri eddi at depieri.net
Fri Nov 18 11:09:45 CET 2011


I suggest you:


mkdir ~/piix4-n36l
cp [yourlinuxtree]/usr/src/linux-source-2.6.32/drivers/i2c/busses/i2c-piix4.c
~/piix4-n36l/
cp ~/Downloads/Makefile ~/piix4-n36l/
cd  ~/piix4-n36l/

patch -p1 < proliant-microserver-n36l.diff
make
you will have your new module inside ~/piix4-n36l/

rmmod i2c-piix4
insmod ./i2c-piix4.ko
insmod ./i2c-piix4-n36l.ko

insmod w83795 (you should already build separately)

sensors

regards Eddi.

I hope an answer from Jean... I'd like if this patch may be inserted
in mainstream linux with the necessary adjustment..

On Thu, Nov 17, 2011 at 11:39 PM, Karsten de Freese <karsten at maxi-dsl.de> wrote:
> hello Eddi,
>
> I'm ready for two questions ;-)
>
> .diff / patch looks simple, and I also found i2c-amd756-s4882.c - however:
> - the diff file actually describes the patch to be on top of i2c-piix4.c?
> - if I'd compile the patched file, would that give me a standalone driver?
>
> thanks for your help -
>
> Karsten
>
> On 17.11.2011 22:25, Karsten de Freese wrote:
>>
>> hi Eddi,
>>
>> thanks very much - I had almost forgotten about the topic, but stumbled
>> across it again a few days ago, so that's very interesting.
>> I'm not yet familiar with .diff patches, and may welcome a little help.
>> However, let me try to find out on my own first..
>>
>> thanks & regards -
>>
>> Karsten
>>
>> On 16.11.2011 17:18, Eddi De Pieri wrote:
>>>
>>> Finally I get W83795ADG working on my proliant microserver
>>>
>>> The patch is based on i2c-amd756-s4882.c and adapted for sb800 southbus.
>>>
>>> Karsten, please try it too...
>>>
>>> root at proliant:/usr/src/lm-sensors/eddi# i2cdetect -l
>>> i2c-0   smbus           SMBus piix4 adapter (SDA0)              SMBus
>>> adapter
>>> i2c-1   smbus           SMBus piix4 adapter (SDA2)              SMBus
>>> adapter
>>> i2c-2   smbus           SMBus piix4 adapter (SDA3)              SMBus
>>> adapter
>>> i2c-3   smbus           SMBus piix4 adapter (SDA4)              SMBus
>>> adapter
>>> root at proliant:/usr/src/lm-sensors/eddi#
>>>
>>> yes SDA1 is reserved... so i can't multiplex it
>>>
>>> root at proliant:/usr/src/lm-sensors/eddi# sensors
>>> k10temp-pci-00c3
>>> Adapter: PCI adapter
>>> temp1:       +24.5°C  (high = +70.0°C, crit = +100.0°C)
>>>
>>> w83795adg-i2c-1-2f
>>> Adapter: SMBus piix4 adapter (SDA2)
>>> in0:         +1.02 V  (min =  +0.00 V, max =  +2.05 V)
>>> in1:         +1.52 V  (min =  +0.00 V, max =  +2.05 V)
>>> in2:         +1.10 V  (min =  +0.00 V, max =  +2.05 V)
>>> in3:         +0.89 V  (min =  +0.00 V, max =  +2.05 V)
>>> in12:        +3.35 V  (min =  +0.00 V, max =  +6.14 V)
>>> in13:        +3.28 V  (min =  +0.00 V, max =  +6.14 V)
>>> fan1:        703 RPM  (min =  329 RPM)
>>> temp1:       +23.0°C  (high = +109.0°C, hyst = +109.0°C)
>>>                       (crit = +109.0°C, hyst = +109.0°C)  sensor =
>>> thermal diode
>>> temp2:       +33.2°C  (high = +105.0°C, hyst = +105.0°C)
>>>                       (crit = +105.0°C, hyst = +105.0°C)  sensor =
>>> thermal diode
>>> temp5:       +14.0°C  (high = +39.0°C, hyst = +39.0°C)
>>>                       (crit = +44.0°C, hyst = +44.0°C)  sensor =
>>> thermistor
>>> beep_enable:disabled
>>>
>>> jc42-i2c-0-18
>>> Adapter: SMBus piix4 adapter (SDA0)
>>> temp1:       +20.5°C  (low  =  +0.0°C, high =  +0.0°C)  ALARM
>>>                       (crit =  +0.0°C, hyst =  +0.0°C)  ALARM
>>>
>>>
>>> root at proliant:/usr/src/lm-sensors/eddi# i2cdetect -y 0
>>>      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>>> 00:          -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 10: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- --
>>> 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 50: 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 70: -- -- -- -- -- -- -- --
>>>
>>> root at proliant:/usr/src/lm-sensors/eddi# i2cdetect -y 1
>>>      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>>> 00:          -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- UU
>>> 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 60: -- 61 -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 70: -- -- -- -- -- -- -- --
>>>
>>> root at proliant:/usr/src/lm-sensors/eddi# i2cdetect -y 2
>>>      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>>> 00:          -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 40: -- -- -- -- -- -- -- -- -- -- -- -- 4c -- -- --
>>> 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 70: -- -- -- -- -- -- -- --
>>>
>>> root at proliant:/usr/src/lm-sensors/eddi# i2cdetect -y 3
>>>      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>>> 00:          -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
>>> 70: -- -- -- -- -- -- -- --
>>>
>>> pay attention that the msleep seems to be really needed...
>>>
>>> Regards, Eddi
>>>
>>> On Tue, Aug 16, 2011 at 9:26 AM, Eddi De Pieri<eddi at depieri.net>  wrote:
>>>>
>>>> Hi Jean...
>>>>
>>>> The bios show fan rpm and temperature. Since my own proliant microserver
>>>> lacks of ipmi card, I doubt the bios give me the results using ipmi call.
>>>>
>>>> The HP Proliant Microserver chipset (SB820M) have a multiplexed smbus
>>>> like your.
>>>>
>>>>
>>>> http://support.amd.com/it/Embedded_TechDocs/47283_sb820m_ds_pub_2.00.pdf
>>>>
>>>> Here is technical document from amd...
>>>>
>>>>
>>>> at p52/53 they say:
>>>>
>>>> (1) The SDA1 and SCL1 SMBus interface is dedicated for ASF devices only.
>>>> It should not be used to
>>>> connect to any other devices.
>>>> (2) There are only two SMBus controllers. The SCL1/SDA1 pair is
>>>> controlled by SMBus controller 1.
>>>>
>>>>
>>>> SCL0/SDA0, SCL2/SDA2, SCL3/SDA3 and SCL4/SDA4 are multiplexed pins that
>>>> are all controlled by
>>>> SMBus controller 0, and only 1 pair of those pins can be active at any
>>>> time.
>>>>
>>>> I can't understand how to enable 2, 3 and 4 muxed bus..
>>>>
>>>>
>>>> If you consolidate a solution for i2c-i801.c I hope we can be replicated
>>>> for i2c-piix4.c too..
>>>>
>>>>
>>>>
>>>>
>>>> Hi Karsten,
>>>>
>>>> On Fri, 22 Oct 2010 16:04:10 +0200, karsten at maxi-dsl.de wrote:
>>>>>
>>>>> hi Jean,
>>>>>>
>>>>>> The w83795 driver uses the same detection mechanism used in
>>>>>> sensors-detect. So if sensors-detect doesn't see your chip, I am not
>>>>>> surprised that the driver didn't either.
>>>>>> The full output of sensors-detect is needed to diagnose your problem
>>>>>> further. It could be that your SMBus controller isn't supported, or
>>>>>> maybe you are supposed to access the chip through IPMI.
>>>>>
>>>>> IPMI is probably the key..
>>>>>   From the sensors-detect output:
>>>>> "Warning: the required module ipmisensors is not currently installed
>>>>> on your system. If it is built into the kernel then it's OK.
>>>>> Otherwise, checkhttp://www.lm-sensors.org/wiki/Devices  for
>>>>> driver availability" (full ouput attached)
>>>>>
>>>>> I did see the output before, but didn't really understand the
>>>>> implications (IPMI seems to be an alternative way of accessing the
>>>>> monitoring chips?)
>>>>
>>>> Yes. The strength of IPMI access is that it can be used remotely too,
>>>> for example from a BMC plugged into your system.
>>>>
>>>>
>>>>
>>>>> The suggested ipmisensors driver however does not seem to be available,
>>>>> right?
>>>>> (http://lm-sensors.org/wiki/Devices  says "(2004-12-12)  Port to Linux
>>>>> 2.6 in progress by Yani Ioannou")
>>>>
>>>> That project is essentially dead. At the time being, the best way to
>>>> retrieve IPMI-based sensor values is using "ipmitool sensor". The
>>>> drawback is that this isn't integrated with libsensors, so the usually
>>>>
>>>>
>>>> monitoring applications won't work.
>>>>
>>>> If you have a BMC or are otherwise already using IPMI on your machine,
>>>> just use ipmitool and you're done.
>>>>
>>>> If not, then it might be worth trying ipmitool once, and then try
>>>>
>>>>
>>>> sensors-detect again. There is a small chance that, once ipmitool
>>>> managed to access the monitoring device, sensors-detect will see it. My
>>>> own mainboard which has a W83795ADG chip has a multiplexed SMBus, and I
>>>> can only see the W83795ADG in sensors-detect when the multiplexer is
>>>>
>>>>
>>>> set properly. Otherwise I would see the memory modules, which _do_
>>>> appear in your sensors-detect output. So maybe your board has a
>>>> multiplexed SMBus too.
>>>>
>>>> If the trick doesn't work, you may want to try the new jc42 driver
>>>>
>>>>
>>>> which can monitor the temperature of some DDR3 memory modules. I
>>>> suspect your memory modules have such sensors. A more recent version of
>>>> sensors-detect would confirm that:
>>>>   http://dl.lm-sensors.org/lm-sensors/files/sensors-detect
>>>>
>>>>
>>>>
>>>> I also see that sensors-detect suggested to use the k10temp driver,
>>>> which your kernel doesn't have. You can try the standalone flavor of
>>>> the drivers which I maintain at:
>>>>   http://khali.linux-fr.org/devel/misc/k10temp/
>>>>
>>>>
>>>> The accuracy of the CPU internal sensors is limited, but that's still
>>>> better than nothing.
>>>>
>>>> --
>>>> Jean Delvare
>>>> http://khali.linux-fr.org/wishlist.html
>>>>
>>>>
>>
>>
>
>
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