[lm-sensors] SMSC Super I/O: unknown chip with ID 0x8902 (was: lm85 in Intel S3000AH case)

Andrew Voznytsa andrew.voznytsa at gmail.com
Wed Jan 30 18:29:09 CET 2008


# sensors-detect revision 5108 (2008-01-22 04:22:47 -0800)

This program will help you determine which kernel modules you need
to load to use lm_sensors most effectively. It is generally safe
and recommended to accept the default answers to all questions,
unless you know what you're doing.

We can start with probing for (PCI) I2C or SMBus adapters.
Do you want to probe now? (YES/no):
Probing for PCI bus adapters...
Use driver `i2c-i801' for device 0000:00:1f.3: Intel 82801G ICH7

We will now try to load each adapter module in turn.
Load `i2c-i801' (say NO if built into your kernel)? (YES/no): no
If you have undetectable or unsupported adapters, you can have them
scanned by manually loading the modules before running this script.

We are now going to do the I2C/SMBus adapter probings. Some chips may
be double detected; we choose the one with the highest confidence
value in that case.
If you found that the adapter hung after probing a certain address,
you can specify that address to remain unprobed.

Next adapter: SMBus I801 adapter at 3000 (i2c-0)
Do you want to scan it? (YES/no/selectively):
Client found at address 0x2e
Handled by driver `lm85' (already loaded), chip type `lm85'
Client found at address 0x44
Probing for `Maxim MAX6633/MAX6634/MAX6635'...              No
Client found at address 0x50
Probing for `Analog Devices ADM1033'...                     No
Probing for `Analog Devices ADM1034'...                     No
Probing for `SPD EEPROM'...                                 Yes
    (confidence 8, not a hardware monitoring chip)
Probing for `EDID EEPROM'...                                No
Client found at address 0x51
Probing for `Analog Devices ADM1033'...                     No
Probing for `Analog Devices ADM1034'...                     No
Probing for `SPD EEPROM'...                                 Yes
    (confidence 8, not a hardware monitoring chip)
Probing for `EDID EEPROM'...                                No
Client found at address 0x52
Probing for `Analog Devices ADM1033'...                     No
Probing for `Analog Devices ADM1034'...                     No
Probing for `SPD EEPROM'...                                 Yes
    (confidence 8, not a hardware monitoring chip)
Probing for `EDID EEPROM'...                                No
Client found at address 0x53
Probing for `Analog Devices ADM1033'...                     No
Probing for `Analog Devices ADM1034'...                     No
Probing for `SPD EEPROM'...                                 Yes
    (confidence 8, not a hardware monitoring chip)
Probing for `EDID EEPROM'...                                No

Here it is. I'd notice that I used 2.6.23-gentoo-r3 kernel with builtin lm85
driver. If you need I can easily build any other kernel with any
drivers/etc.

Some chips are also accessible through the ISA I/O ports. We have to
write to arbitrary I/O ports to probe them. This is usually safe though.
Yes, you do have ISA I/O ports even if you do not have any ISA slots!
Do you want to scan the ISA I/O ports? (YES/no):
Probing for `National Semiconductor LM78' at 0x290...       No
Probing for `National Semiconductor LM78-J' at 0x290...     No
Probing for `National Semiconductor LM79' at 0x290...       No
Probing for `Winbond W83781D' at 0x290...                   No
Probing for `Winbond W83782D' at 0x290...                   No
Probing for `Silicon Integrated Systems SIS5595'...         No
Probing for `VIA VT82C686 Integrated Sensors'...            No
Probing for `VIA VT8231 Integrated Sensors'...              No
Probing for `IPMI BMC KCS' at 0xca0...                      No
Probing for `IPMI BMC SMIC' at 0xca8...                     No

Some Super I/O chips may also contain sensors. We have to write to
standard I/O ports to probe them. This is usually safe.
Do you want to scan for Super I/O sensors? (YES/no):
Probing for Super-I/O at 0x2e/0x2f
Trying family `National Semiconductor'...                   No
Trying family `SMSC'...                                     Yes
Found `SMSC SCH5027D-NW Super IO'
    (hardware monitoring capabilities accessible via SMBus only)
Probing for Super-I/O at 0x4e/0x4f
Trying family `National Semiconductor'...                   No
Trying family `SMSC'...                                     No
Trying family `VIA/Winbond/Fintek'...                       No
Trying family `ITE'...                                      No

Some CPUs or memory controllers may also contain embedded sensors.
Do you want to scan for them? (YES/no):
AMD K8 thermal sensors...                                   No
AMD K10 thermal sensors...                                  No
Intel Core family thermal sensor...                         Success!
    (driver `coretemp')
Intel AMB FB-DIMM thermal sensor...                         No

Now follows a summary of the probes I have just done.
Just press ENTER to continue:

Driver `lm85' (should be inserted):
  Detects correctly:
  * Bus `SMBus I801 adapter at 3000'
    Busdriver `i2c-i801', I2C address 0x2e
    Chip `lm85' (confidence: 6)

Driver `coretemp' (should be inserted):
  Detects correctly:
  * Chip `Intel Core family thermal sensor' (confidence: 9)

Do you want to generate /etc/sysconfig/lm_sensors? (yes/NO):
To load everything that is needed, add this to one of the system
initialization scripts (e.g. /etc/rc.d/rc.local):

#----cut here----
# I2C adapter drivers
modprobe i2c-i801
# Chip drivers
modprobe lm85
# Warning: the required module coretemp is not currently installed
# on your system. For status of 2.6 kernel ports check
# http://www.lm-sensors.org/wiki/Devices. If driver is built
# into the kernel, or unavailable, comment out the following line.
modprobe coretemp
/usr/bin/sensors -s
#----cut here----

If you have some drivers built into your kernel, the list above will
contain too many modules. Skip the appropriate ones! You really
should try these commands right now to make sure everything is
working properly. Monitoring programs won't work until the needed
modules are loaded.

Best regards,
Andrew Voznytsa

> -----Original Message-----
> From: Juerg Haefliger [mailto:juergh at gmail.com]
> Sent: Wednesday, January 30, 2008 6:08 PM
> To: Andrew Voznytsa
> Cc: lm-sensors at lm-sensors.org
> Subject: Re: [lm-sensors] SMSC Super I/O: unknown chip with ID 0x8902
> (was: lm85 in Intel S3000AH case)
> 
> Hi Andrew,
> 
> 
> On Jan 30, 2008 5:18 AM, Andrew Voznytsa <andrew.voznytsa at gmail.com>
> wrote:
> > Hi Juerg,
> >
> > Of course - works perfectly. It said
> >
> > [..]
> > Trying family `SMSC'...                                     Yes
> > Found `SMSC SCH5027D-NW Super IO'
> >     (hardware monitoring capabilities accessible via SMBus only)
> > [..]
> 
> There should be another instance where the SMSC is detected as an I2C
> device. Can you post the complete log?
> 
> 
> > If I can do anything else - just let me know.
> >
> > Should I try some lm-sensors's svn branch/revision to test if all fans
> are
> > monitored now? If there is such - could you send me URL?
> 
> That won't help. I need to update the dme1737 driver first which is
> part of the kernel, not lm-sensors.
> 
> ...juerg
> 
> 
> > Many thanks,
> > Andrew Voznytsa
> >
> >
> >
> >
> > > -----Original Message-----
> > > From: Juerg Haefliger [mailto:juergh at gmail.com]
> > > Sent: Wednesday, January 30, 2008 7:22 AM
> > > To: Andrew Voznytsa
> > > Cc: lm-sensors at lm-sensors.org
> > > Subject: Re: [lm-sensors] SMSC Super I/O: unknown chip with ID 0x8902
> > > (was: lm85 in Intel S3000AH case)
> > >
> > > Hi Andrew,
> > >
> > > Could you run the attached script and post the output? It should
> > > correctly identify the SCH5027.
> > >
> > > ...juerg
> > >
> > >
> > > On Jan 18, 2008 7:25 AM, Andrew Voznytsa <andrew.voznytsa at gmail.com>
> > > wrote:
> > > >
> > > > Hi Juerg,
> > > >
> > > > > > > > > > > > Trying family `SMSC'...
> > > > > Yes
> > > > > > > > > > > >
> > > > > > > > > > > > Found unknown chip with ID 0x8902
> > > > > > > > > > >
> > > > > > > > > > > This is indeed unknown. Can you check the markings on
> the
> > > chip
> > > > > so
> > > > > > > that
> > > > > > > > > > > we know what we're dealing with? From the product
> picture
> > > my
> > > > > guess
> > > > > > > is
> > > > > > > > > > > it's the chip in the QFP package close to the IDE
> > > connector.
> > > > > It
> > > > > > > should
> > > > > > > > > > > read something like SMSC xyz.
> > > > > > > > > >
> > > > > > > > > > There is chip marked SMSC SCH-5027D(not sure that D,
> might
> > > be
> > > > > 0)-NW
> > > > > > > > > >
> > > > > > > > > > According to spec which comes with MB it should be SMSC
> SC-
> > > 5027D
> > > > > > > > >
> > > > > > > > > Can you run
> > > > > > > > > i2cdetect -y 0
> > > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > Of course - here is output:
> > > > > > > >
> > > > > > > >      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
> > > > > > > > 00:          -- -- -- -- -- 08 -- -- -- -- -- -- --
> > > > > > > > 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
> > > > > > > > 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- UU --
> > > > > > > > 30: 30 31 32 33 -- -- -- -- -- -- -- -- -- -- -- --
> > > > > > > > 40: -- -- -- -- 44 -- -- -- -- -- -- -- -- -- -- --
> > > > > > > > 50: 50 51 52 53 -- -- -- -- -- -- -- -- -- -- -- --
> > > > > > > > 60: -- 61 -- 63 64 -- -- -- -- 69 -- -- -- -- -- --
> > > > > > > > 70: -- -- -- -- -- -- -- --
> > > > > > >
> > > > > > > OK, I figured it out, I believe :-) I received the datasheet
> for
> > > the
> > > > > > > SCH5027 from SMSC and after a quick glance at it, it looks
> like
> > > the
> > > > > > > hardware monitoring features of the DME1737, SCH5027 and
> EMC6D10x
> > > are
> > > > > > > identical but they advertise themselves differently. In your
> case,
> > > the
> > > > > > > chip is detected as a EMC6D10x and sensors-detect suggests the
> > > lm85
> > > > > > > driver. However, I believe the dme1737 driver is more
> appropriate.
> > > I
> > > > > > > will take a closer look at the various datasheets over the
> next
> > > couple
> > > > > > > of days to confirm my theory. In the meantime, you can try the
> > > > > > > following:
> > > > > > > 1) remove the lm85 driver (rmmod lm85)
> > > > > > > 2) force the dme1737 driver (modprobe dme1737 force=0,0x2e)
> > > > > > > 3) post the dme1737-related messages in /var/log/messages to
> the
> > > > > mailing
> > > > > > > list
> > > > > >
> > > > > > Here is output:
> > > > > >
> > > > > > Jan 18 16:09:12 farm dme1737 0-002e: Failed to query Super-IO
> for
> > > > > optional
> > > > > > features.
> > > > >
> > > > > Ah yes, the dme1737 driver doesn't know anything about the SCH5027
> > > > > Super-IO so it can't determine if fans 5&6 and PWMs 5&6 are
> > > > > configured.
> > > > >
> > > > >
> > > > > > Jan 18 16:09:12 farm dme1737 0-002e: Optional features:
> pwm3=yes,
> > > > > pwm5=no,
> > > > > > pwm6=no, fan3=yes, fan4=yes, fan5=no, fan6=no.
> > > > >
> > > > > If the BIOS shows 6 fans, fans 5&6 should become available once
> the
> > > > > driver is fixed to recognize the SCH5027.
> > > > >
> > > > >
> > > > > > Jan 18 16:09:12 farm i2c-adapter i2c-0: Found a DME1737 chip at
> 0x2e
> > > > > (rev
> > > > > > 0x00)
> > > > > >
> > > > > > >
> > > > > > > Note that the SCH5027 only supports 4 fans, so you won't see
> > > fan5&6.
> > > > > > > How many fans do you have in the machine? Can you see RPMs for
> all
> > > of
> > > > > > > them in the BIOS?
> > > > >
> > > > > Correction: This is not true. The SCH5027 supports 6 fans, just
> like
> > > > > the dme1737.
> > > > >
> > > > >
> > > > > > I've 2 fans - CPU (fan1) and chassis (fan5). They are connected
> as
> > > > > Intel's
> > > > > > manual says.
> > > > > >
> > > > > > BIOS shows 6 fans - it shows some (reasonable) RPMs for fans1, 5
> and
> > > > > zero
> > > > > > for rest (nothing attached there). BIOS is able to control RPMs
> > > itself,
> > > > > > depending on CPU, chassis and DIMM temperature sensors.
> > > > >
> > > > > Again, I'll take a look at the datasheets and if the chips are
> indeed
> > > > > compatible, I'll fix the dme1737 driver to support the sch5027. I
> > > > > don't have access to a test machine until next week, so it has to
> wait
> > > > > until then.
> > > > >
> > > >
> > > > Just let me know if I can help with testing - I can't give access to
> my
> > > > S3000AH-based system but definitely can run some tests, etc.
> > > >
> > > > All the best,
> > > > Andrew
> > > >
> > > >
> > > >
> >
> >





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