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Thread: Asrock E3C224D2I / E3C226D2I lm-sensors (linux) configuration




  1. #1
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    Default Asrock E3C224D2I / E3C226D2I lm-sensors (linux) configuration

    Short version : even if you do not want to read everything you can still help me by simply sending me the exact values you get for +5.00V, +12.00V, +3.30V in the bios H/W Monitor screen.

    Long version :

    I use Linux (Debian Wheezy). I want to be able to send an alert if there is a problem with voltages, temperature or fan speed. To access the Asrock E3C226D2I Nuvoton NCT5573 I loaded the module w83627ehf and then can access to the values with lm-sensors "sensors" command. Unfortunatelly, the values displayed are not directly usable as they need to be scaled to get the real values.

    Indeed, most voltage monitoring chips cannot accept high voltage values and the voltage need to be scaled down (by resistors) before being send to the chip. Afterwards, when the value is read it just need to be multipled by a constant to get the real voltage value. The problem is only the board manufacturer knows theses values ...

    So if someone from Asrock can give me the scaling factors it would be the fastest way ...

    But, as engineers time is precious I would be suprised if I get an answer. But there is another way cleaver way to get the values. Please read VoltageLabelsAndScaling for the method description.

    For the rest of the message I suppose that you read the previous link.

    I managed to do the first steps :
    • I did not manage to get the Nuvoton NCT5573 datasheet but I found the NCT6776F/NCT6776D datasheet and I hope that they are similar (in linux the driver detects a nct6776-isa-0290) ...
    • From this I know that voltages greater than 2.048V (or negative) have to be scaled.
    • Also there is an integrated voltage divisor suitable for voltages around 3V (and I suppose the linux driver automaticaly scale back these values).
    • Finally the values are read with a 8 bits ADC with 8mV LSB (256 steps x 8mV = 2.048 V)


    But my power supply is either very stable or the bios H/W monitor does not update the
    +5.00V, +12.00V, +3.30V values because I got only one set of values (+5.112 +12.144 and +3.344). Remark : I do not use the remote management values because they are less precise (and still not changing).

    Now how you can help ? I simply need your values as displayed by the bios H/W Monitor section +5.00V, +12.00V, +3.30V.

    Thank for you help ! If I manage to get a good configuration I will share it with everyone.

    Cheers,
    --
    Ludovic

  2. #2
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    Default Re: Asrock E3C224D2I / E3C226D2I lm-sensors (linux) configuration

    Sorry it took a few days for the answer. I need to establish a contact with the engineer in HQ (TW) to get the appropriate information. Here you go, hope that helps.

    + 5.00V :
    Status = HWMRead(0x00,0x25,&temp) ; // Register 0x25
    VIN2 = (temp * 8 * (SIO_R1_VIN2 + SIO_R2_VIN2)) / SIO_R2_VIN2;
    SIO_R1_VIN2 = 20, SIO_R2_VIN2=10;

    + 12.00V :
    Status = HWMRead(0x00,0x26,&temp) ; // Register 0x26
    VIN3 = (temp * 8 * (SIO_R1_VIN3 + SIO_R2_VIN3)) / SIO_R2_VIN3;
    SIO_R1_VIN3 = 56, SIO_R2_VIN3=10;

    +3.30V :
    Status = HWMRead(0x00,0x23,&temp) ; // Register 0x23,
    3VCC = (temp * 8 * (SIO_R1_3VCC + SIO_R2_3VCC)) / SIO_R2_3VCC;
    SIO_R1_3VCC=34, SIO_R2_3VCC=34;

  3. #3
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    Default Re: Asrock E3C224D2I / E3C226D2I lm-sensors (linux) configuration

    Bill, thank a lot for the answer, It was a very good surprise.

    In case other people are interested here is a short guide to configure lm-sensors for ASRock E3C226D2I :
    <tt>
    </tt>
    • Install lm-sensors package
    • <tt>In file "/etc/modules</tt>"

    Code:
    # not using "w83627ehf" as it disables IN6 (+12V)
    nct6775

    • In file "/etc/sensors.d/asrock_e3c226d2i"

    Code:
    # From ASRock technical support :
    # * Scaling : VALUE * (R1+R2)/R2 * 8mV
    #   (*8 already done by driver)
    # * +3.30V : register 0x23 R1=34 and R2=34
    #   (integrated resistors, scaling already done by driver)
    # * +5.00V : register 0x25 R1=20 and R2=10
    # * +12.00V : register 0x26 R1=56 and R2=10
    #
    # From nct6775 module source code :
    # 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x550, 0x551, 0x552
    #  in0   in1   in2   in3   in4   in5   in6    in7    in8    in9
    #                   +3.3V        +5V  +12V
    
    chip "nct6776-*"
        # Voltages ------------------------------------------------------------
        label in3 "+3.30V"
        set in3_min  3.3 * 0.95
        set in3_max  3.3 * 1.05
            
        label in5 "+5.00V"
        compute in5 @*3, @/3
        set in5_min  5.0 * 0.95
        set in5_max  5.0 * 1.05
    
        label in6 "+12.00V"
        compute in6 @*6.6,@/6.6
        set in6_min  12.0 * 0.95
        set in6_max  12.0 * 1.05
    
        # Need more documentation :
        ignore in0
        ignore in1
        ignore in2
        ignore in4
        ignore in7
        ignore in8
    
        # Temperatures --------------------------------------------------------
        label temp1 "M/B Temp"
        set temp1_max 60
        set temp1_max_hyst 50
    
        label temp2 "CPU Temp"
        set temp2_max 80
        set temp2_max_hyst 75   
    
        # Fans ----------------------------------------------------------------
        # No value, controlled by ASPEED AST2300 ?
        ignore fan1
        ignore fan2
    
        # Disable unconnected sensors -----------------------------------------
        ignore intrusion0
        ignore intrusion1
        ignore cpu0_vid
        ignore beep_enable
        ignore temp3  # AUXTIN
        ignore temp7  # PECI Agent 0
        ignore temp8  # PCH_CHIP_TEMP
        ignore temp9  # PCH_CPU_TEMP
        ignore temp10 # PCH_MCH_TEMP

    • Restart the service (to set the limits):

    Code:
    service lm-sensors restart

    • Test configuration : execute the command "sensors"

    Code:
    nct6776-isa-0290
     Adapter: ISA adapter
    +3.30V:       +3.34 V  (min =  +2.98 V, max =  +3.63 V)
    +5.00V:       +5.11 V  (min =  +4.75 V, max =  +5.26 V)
    +12.00V:     +12.14 V  (min = +11.40 V, max = +12.62 V)
    M/B Temp:     +26.0C  (high = +60.0C, hyst = +50.0C)  sensor = thermistor
    CPU Temp:     +27.5C  (high = +80.0C, hyst = +75.0C)  sensor = thermistor

  4. #4
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    Default Re: Asrock E3C224D2I / E3C226D2I lm-sensors (linux) configuration

    Ludovic, thanks for sharing your knowledge with other users!

  5. #5
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    Default Re: Asrock E3C224D2I / E3C226D2I lm-sensors (linux) configuration

    Bill,

    If it is not asking to much, I would like to ask a few questions for the engineer to have a complete lm-sensor support (and add it to lm-sensors/ASRock) :
    • Question 1 : I would like to get the registers and resistances values for the remaining voltages. At least for Vcore and BAT, but I you provide the other values (ATX+5VSB, +3VSB, VCCM,+1.05V, VCCIO_OUT) it would be perfect
    • Question 2 : I did not manage to get information from the fans. I have 2 hypothesis, could you tell me if one of the is right ?
      • The linux support for Nuvoton NCT5573 is incomplete, which would not be a surprise as the datasheet is not publicly available
      • They are directly controlled by the ASPEED AST2300 chip (I managed to access it from linux directly with IPMI, it works well)



    Cheers,
    --
    Ludovic

  6. #6
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    Default Re: Asrock E3C224D2I / E3C226D2I lm-sensors (linux) configuration

    Hi Ludovic, here is the update. Hope it's helpful.

    Asrock E3C224D2I / E3C226D2I lm-sensors (linux) configuration-isensor-jpg

  7. #7
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    Default Re: Asrock E3C224D2I / E3C226D2I lm-sensors (linux) configuration

    Any progress on getting the fan speed reported? I'm trying to lower the RPM, but no luck so far in detecting the fan speed, so fancontrol doesn't work.

    Thanks for the lm-sensors config btw :-)

  8. #8
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    Default Re: Asrock E3C224D2I / E3C226D2I lm-sensors (linux) configuration

    Quote Originally Posted by tty33 View Post
    Any progress on getting the fan speed reported?
    I only managed to get fan speed through IPMI :
    Code:
    modprobe ipmi_si
    modprobe ipmi_devintf
    ipmitool sensor
    [...]
    CPU_FAN1         | 1100.000   | RPM        | ok    | na        | na        | 300.000   | na        | na        | na        
    REAR_FAN1        | 400.000    | RPM        | ok    | na        | na        | 300.000   | na        | na        | na        
    FRNT_FAN1        | 500.000    | RPM        | ok    | na        | na        | 300.000   | na        | na        | na        
    [...]
    Quote Originally Posted by tty33 View Post
    I'm trying to lower the RPM, but no luck so far in detecting the fan speed, so fancontrol doesn't work.
    Can you access to the fans PWM interface ? I tried many kernel modules but not one could see the PWM interface. If you cannot access the PWM interface, you will not be able to change the fan speed.

    But if you only want to reduce the fan speed, I suggest you upgrade to the latest BIOS and use the fan speed control in the BIOS. The control is quite complete and allow to associate fan speed with temperatures intervals.

    Quote Originally Posted by tty33 View Post
    Thanks for the lm-sensors config btw :-).
    Thanks, I will put an updated version with the missing fields values.

  9. #9
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    Default Re: Asrock E3C224D2I / E3C226D2I lm-sensors (linux) configuration

    Sorry to dig it up. I am wondering if anyone figure out how to control the fan speed (pwmconfig--> fancontrol)? My motherboard is Asrock C2550D4I but it uses the same NCT6776 chip.

    But at least this thread explained why the fan readings are 0 since they are not controlled by nct6776... Thanks!

    I can set the fan speed in the bios through remote session, but it is not convenient (need to reboot every time). And sometimes, the fans just go crazy and spin at top speed..

    Thanks in advance!

  10. #10
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    Default Re: Asrock E3C224D2I / E3C226D2I lm-sensors (linux) configuration

    Quote Originally Posted by littlelio View Post
    Sorry to dig it up. I am wondering if anyone figure out how to control the fan speed (pwmconfig--> fancontrol)? My motherboard is Asrock C2550D4I but it uses the same NCT6776 chip.

    But at least this thread explained why the fan readings are 0 since they are not controlled by nct6776... Thanks!

    I can set the fan speed in the bios through remote session, but it is not convenient (need to reboot every time). And sometimes, the fans just go crazy and spin at top speed..
    So far I have been completely unable to control the fans on my C2750D4I board under Linux (Ubuntu 14.04 LTS).
    pwmconfig reports:
    Code:
    Found the following devices:
       hwmon0/device is coretemp
       hwmon1 is nct6776
    
    Found the following PWM controls:
       hwmon1/pwm1           current value: 255
       hwmon1/pwm2           current value: 255
    
    Giving the fans some time to reach full speed...
    Found the following fan sensors:
       hwmon1/fan1_input     current speed: 0 ... skipping!
       hwmon1/fan2_input     current speed: 0 ... skipping!
    
    There are no working fan sensors, all readings are 0.
    Make sure you have a 3-wire fan connected.
    You may also need to increase the fan divisors.
    See doc/fan-divisors for more information.
    I'm wondering if this is a side-effect of setting all the fans to "smart" in the BIOS. I have 3 3-pin fans attached to the REAR-FAN1, REAR_FAN2, and FRNT_FAN1 headers (confirmed in the IPMI console).

    BTW, the Nuvoton SuperIO chip is actually mis-detected, as it's a nct5573, not a nct6776. However, a post from a Nuvoton engineer on the lm-sensors mailing list indicates strongly that both can be covered by the same driver.

    I think I got the Voltages right, but if Bill could get the HQ engineers to confirm the information in the attachment, that would be lovely.
    Next step is to get the fans to quiet down a fair bit.
    Attached Files Attached Files

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