| 1 | Kernel driver `mtp008.o' |
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| 2 | ========================= |
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| 3 | |
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| 4 | Status: Complete; Beta. |
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| 5 | This chip is quite configurable and many settings cannot |
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| 6 | be done through the driver. Hopefully the BIOS settings will |
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| 7 | be correct for most motherboards. |
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| 8 | |
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| 9 | Supported chips: |
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| 10 | * Myson MTP008 |
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| 11 | Prefix: 'mtp008' |
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| 12 | Addresses scanned: I2C 0x2c - 0x2e |
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| 13 | Datasheet: Publicly available at the Myson website |
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| 14 | |
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| 15 | Author: Kris Van Hees <aedil@alchar.org> |
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| 16 | |
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| 17 | |
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| 18 | Description |
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| 19 | ----------- |
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| 20 | |
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| 21 | The Myson MTP008 is similar in function to the Winbond W83781D and the |
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| 22 | National Semi LM78. See documentation for those chips for an overview. |
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| 23 | |
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| 24 | |
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| 25 | The MTP008 chip has several pins that are configurable. |
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| 26 | |
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| 27 | The three temperature sensors are configurable via the driver |
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| 28 | using either the /proc entries or 'set sensorx y' statements in |
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| 29 | /etc/sensors.conf. |
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| 30 | One temperature input is always temp1, and the sensor type is configured |
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| 31 | with the sensor1 entry in /proc. |
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| 32 | One input is either in4 or temp2, and is configured with the sensor2 entry. |
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| 33 | One input is either in5 or temp3, and is configured with the sensor3 entry. |
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| 34 | |
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| 35 | For example, on the Tyan S1824D motherboard, |
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| 36 | AIN4 is configured as PII temp sensor 2 and |
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| 37 | AIN5 is hooked up to the -12V sensing circuit. |
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| 38 | |
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| 39 | Other Tyan motherboards (the 2510 Thunder and the Tiger 200) appear to |
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| 40 | have different configurations. |
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| 41 | |
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| 42 | For the 2510, which has two MTP008 chips, each with a different |
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| 43 | configuration, follow the instructions in the mtp008 section of |
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| 44 | etc/sensors.conf.eg to configure 'sensors' correctly. |
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| 45 | |
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| 46 | The PWM outputs are configurable via the driver. |
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| 47 | PWM values are from 0 to 255. The first value in the /proc entry is |
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| 48 | the pwm value; the second is the enable (0 or 1). |
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| 49 | |
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| 50 | The fan3 and pwm1 functions share a pin. |
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| 51 | If pwm1 is enabled than fan3 will read as 0. |
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| 52 | |
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| 53 | The Fan input types (2 wire or 3 wire) are configurable but |
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| 54 | not via the driver. |
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| 55 | |
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| 56 | The driver now preserves pin settings that the BIOS configures. |
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| 57 | If your BIOS did it right then the driver should work great. |
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| 58 | |
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| 59 | The MTP008 has sensor type selection in /proc like the Winbond W83782D. |
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| 60 | However, the appropriate values used to make the selection are different. |
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| 61 | |
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| 62 | To select a sensor type, echo the value to the /proc entry, for example: |
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| 63 | echo 1 > /proc/sys/dev/sensors/mtp008-i2c-0-2d/sensor1 |
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| 64 | Or, use /etc/sensors.conf and add a line 'set sensor1 1', for example. |
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| 65 | Hopefully the BIOS has set these already. |
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| 66 | |
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| 67 | Sensor selection is as follows: |
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| 68 | |
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| 69 | Value Function Valid on sensors |
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| 70 | ----- -------- ---------------- |
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| 71 | 1 Analog input (not for temperature sensing) 2,3 |
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| 72 | 2 Thermistor 1,2,3 |
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| 73 | 3 Pentium diode 1,2 |
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