Re: Tmp75 sensor installation

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Jean,

Loading I2c-dev made it so it sees i2c-0 to 12c-6 using i2cdetect.  Unfortunately, none of them are listed as the smbus. When I try and probe each one of these devices for my tmp75 sensor chip, it doesn't find it.  I also find it odd that when I connect a scope to the smb data and clock lines, I don't see any data communication during this probe process (I do see data when I use smb read/wite anywhere from windows).

I did check the log and there was initially an error with i2c-i801 where it stated "module verification failed: signature and/or required key missing - tainting kernel".  I added #include <linux/init.h> and have not seen it again.

Thank you, guys.

Benjo

-----Original Message-----
From: Jean Delvare [mailto:khali@xxxxxxxxxxxx] 
Sent: Wednesday, September 25, 2013 9:19 AM
To: Benjo Dans
Cc: Guenter Roeck; lm-sensors@xxxxxxxxxxxxxx
Subject: Re:  Tmp75 sensor installation

On Tue, 24 Sep 2013 14:55:01 -0700, Guenter Roeck wrote:
> On 09/24/2013 02:46 PM, Benjo Dans wrote:
> > I have a Texas Instrument Tmp75 installed on the smbus (Intel LynxPoint PCH). I have installed the following drivers:
> >
> > i2c-i801.c (make and make install)
> > lm75.ko (sudo insmod lm75.ko)
> >
> > I have ran "sensors" but it still cannot see my chip.  I have also installed your i2c-tools but when I run i2cdetect -l, it does not detect my smbus.  What drivers and/or files am I missing here?
>
> Did you run modprobe i2c-i801 ?

Also worth checking:

* Is i2c-dev loaded? i2cdetect needs it.

* Errors in the kernel log after loading the i2c-i801 driver. For
  example ACPI resource conflicts could be a problem.

* Kernel version. The original LynxPoint PCH is only supported since
  kernel 3.4, for the LP flavor you need something even more recent. If
  you use my standalone version you should be fine.

-- 
Jean Delvare

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