diff options
| -rw-r--r-- | Documentation/hwmon/dme1737 | 88 | ||||
| -rw-r--r-- | Documentation/hwmon/vt1211 | 84 |
2 files changed, 114 insertions, 58 deletions
diff --git a/Documentation/hwmon/dme1737 b/Documentation/hwmon/dme1737 index 4d2935145a1c..82fcbc6b2b43 100644 --- a/Documentation/hwmon/dme1737 +++ b/Documentation/hwmon/dme1737 @@ -2,21 +2,37 @@ Kernel driver dme1737 ===================== Supported chips: + * SMSC DME1737 and compatibles (like Asus A8000) + Prefix: 'dme1737' + Addresses scanned: I2C 0x2c, 0x2d, 0x2e + Datasheet: Provided by SMSC upon request and under NDA + * SMSC SCH3112, SCH3114, SCH3116 + Prefix: 'sch311x' + Addresses scanned: none, address read from Super-I/O config space + Datasheet: Available on the Internet + * SMSC SCH5027 + Prefix: 'sch5027' + Addresses scanned: I2C 0x2c, 0x2d, 0x2e + Datasheet: Provided by SMSC upon request and under NDA + * SMSC SCH5127 + Prefix: 'sch5127' + Addresses scanned: none, address read from Super-I/O config space + Datasheet: Provided by SMSC upon request and under NDA Authors: @@ -26,11 +42,14 @@ Authors: Module Parameters ----------------- -* force_start: bool Enables the monitoring of voltage, fan and temp inputs +* force_start: bool + Enables the monitoring of voltage, fan and temp inputs and PWM output control functions. Using this parameter shouldn't be required since the BIOS usually takes care of this. -* probe_all_addr: bool Include non-standard LPC addresses 0x162e and 0x164e + +* probe_all_addr: bool + Include non-standard LPC addresses 0x162e and 0x164e when probing for ISA devices. This is required for the following boards: - VIA EPIA SN18000 @@ -70,7 +89,8 @@ scaling resistors. The values returned by the driver therefore reflect true millivolts and don't need scaling. The voltage inputs are mapped as follows (the last column indicates the input ranges): -DME1737, A8000: +DME1737, A8000:: + in0: +5VTR (+5V standby) 0V - 6.64V in1: Vccp (processor core) 0V - 3V in2: VCC (internal +3.3V) 0V - 4.38V @@ -79,7 +99,8 @@ DME1737, A8000: in5: VTR (+3.3V standby) 0V - 4.38V in6: Vbat (+3.0V) 0V - 4.38V -SCH311x: +SCH311x:: + in0: +2.5V 0V - 3.32V in1: Vccp (processor core) 0V - 2V in2: VCC (internal +3.3V) 0V - 4.38V @@ -88,7 +109,8 @@ SCH311x: in5: VTR (+3.3V standby) 0V - 4.38V in6: Vbat (+3.0V) 0V - 4.38V -SCH5027: +SCH5027:: + in0: +5VTR (+5V standby) 0V - 6.64V in1: Vccp (processor core) 0V - 3V in2: VCC (internal +3.3V) 0V - 4.38V @@ -97,7 +119,8 @@ SCH5027: in5: VTR (+3.3V standby) 0V - 4.38V in6: Vbat (+3.0V) 0V - 4.38V -SCH5127: +SCH5127:: + in0: +2.5 0V - 3.32V in1: Vccp (processor core) 0V - 3V in2: VCC (internal +3.3V) 0V - 4.38V @@ -119,7 +142,7 @@ Celsius. The chip also features offsets for all 3 temperature inputs which - when programmed - get added to the input readings. The chip does all the scaling by itself and the driver therefore reports true temperatures that don't need any user-space adjustments. The temperature inputs are mapped as follows -(the last column indicates the input ranges): +(the last column indicates the input ranges):: temp1: Remote diode 1 (3904 type) temperature -127C - +127C temp2: DME1737 internal temperature -127C - +127C @@ -171,6 +194,7 @@ pwm[1-3]_auto_pwm_min, respectively. The thermal thresholds of the zones are programmed via zone[1-3]_auto_point[1-3]_temp and zone[1-3]_auto_point1_temp_hyst: + =============================== ======================================= pwm[1-3]_auto_point2_pwm full-speed duty-cycle (255, i.e., 100%) pwm[1-3]_auto_point1_pwm low-speed duty-cycle pwm[1-3]_auto_pwm_min min-speed duty-cycle @@ -179,6 +203,7 @@ zone[1-3]_auto_point1_temp_hyst: zone[1-3]_auto_point2_temp full-speed temp zone[1-3]_auto_point1_temp low-speed temp zone[1-3]_auto_point1_temp_hyst min-speed temp + =============================== ======================================= The chip adjusts the output duty-cycle linearly in the range of auto_point1_pwm to auto_point2_pwm if the temperature of the associated zone is between @@ -192,17 +217,21 @@ all PWM outputs are set to 100% duty-cycle. Following is another representation of how the chip sets the output duty-cycle based on the temperature of the associated thermal zone: - Duty-Cycle Duty-Cycle - Temperature Rising Temp Falling Temp - ----------- ----------- ------------ + =============== =============== ================= + Temperature Duty-Cycle Duty-Cycle + Rising Temp Falling Temp + =============== =============== ================= full-speed full-speed full-speed - < linearly adjusted duty-cycle > + - < linearly - + adjusted + duty-cycle > low-speed low-speed low-speed - min-speed low-speed + - min-speed low-speed min-speed min-speed min-speed - min-speed min-speed + - min-speed min-speed + =============== =============== ================= Sysfs Attributes @@ -211,8 +240,9 @@ Sysfs Attributes Following is a list of all sysfs attributes that the driver provides, their permissions and a short description: +=============================== ======= ======================================= Name Perm Description ----- ---- ----------- +=============================== ======= ======================================= cpu0_vid RO CPU core reference voltage in millivolts. vrm RW Voltage regulator module version @@ -242,9 +272,10 @@ temp[1-3]_fault RO Temp input fault. Returns 1 if the chip zone[1-3]_auto_channels_temp RO Temperature zone to temperature input mapping. This attribute is a bitfield and supports the following values: - 1: temp1 - 2: temp2 - 4: temp3 + + - 1: temp1 + - 2: temp2 + - 4: temp3 zone[1-3]_auto_point1_temp_hyst RW Auto PWM temp point1 hysteresis. The output of the corresponding PWM is set to the pwm_auto_min value if the temp @@ -275,9 +306,10 @@ pmw[1-3,5-6] RO/RW Duty-cycle of PWM output. Supported manual mode. pwm[1-3]_enable RW Enable of PWM outputs 1-3. Supported values are: - 0: turned off (output @ 100%) - 1: manual mode - 2: automatic mode + + - 0: turned off (output @ 100%) + - 1: manual mode + - 2: automatic mode pwm[5-6]_enable RO Enable of PWM outputs 5-6. Always returns 1 since these 2 outputs are hard-wired to manual mode. @@ -294,11 +326,12 @@ pmw[1-3]_ramp_rate RW Ramp rate of PWM output. Determines how pwm[1-3]_auto_channels_zone RW PWM output to temperature zone mapping. This attribute is a bitfield and supports the following values: - 1: zone1 - 2: zone2 - 4: zone3 - 6: highest of zone[2-3] - 7: highest of zone[1-3] + + - 1: zone1 + - 2: zone2 + - 4: zone3 + - 6: highest of zone[2-3] + - 7: highest of zone[1-3] pwm[1-3]_auto_pwm_min RW Auto PWM min pwm. Minimum PWM duty- cycle. Supported values are 0 or auto_point1_pwm. @@ -307,12 +340,14 @@ pwm[1-3]_auto_point1_pwm RW Auto PWM pwm point. Auto_point1 is the pwm[1-3]_auto_point2_pwm RO Auto PWM pwm point. Auto_point2 is the full-speed duty-cycle which is hard- wired to 255 (100% duty-cycle). +=============================== ======= ======================================= Chip Differences ---------------- +======================= ======= ======= ======= ======= Feature dme1737 sch311x sch5027 sch5127 -------------------------------------------------------- +======================= ======= ======= ======= ======= temp[1-3]_offset yes yes vid yes zone3 yes yes yes @@ -326,3 +361,4 @@ pwm5 opt opt fan6 opt opt pwm6 opt opt in7 yes +======================= ======= ======= ======= ======= diff --git a/Documentation/hwmon/vt1211 b/Documentation/hwmon/vt1211 index 77fa633b97a8..ddbcde7dd642 100644 --- a/Documentation/hwmon/vt1211 +++ b/Documentation/hwmon/vt1211 @@ -2,9 +2,13 @@ Kernel driver vt1211 ==================== Supported chips: + * VIA VT1211 + Prefix: 'vt1211' + Addresses scanned: none, address read from Super-I/O config space + Datasheet: Provided by VIA upon request and under NDA Authors: Juerg Haefliger <juergh@gmail.com> @@ -19,14 +23,17 @@ technical support. Module Parameters ----------------- -* uch_config: int Override the BIOS default universal channel (UCH) + +* uch_config: int + Override the BIOS default universal channel (UCH) configuration for channels 1-5. Legal values are in the range of 0-31. Bit 0 maps to UCH1, bit 1 maps to UCH2 and so on. Setting a bit to 1 enables the thermal input of that particular UCH and setting a bit to 0 enables the voltage input. -* int_mode: int Override the BIOS default temperature interrupt mode. +* int_mode: int + Override the BIOS default temperature interrupt mode. The only possible value is 0 which forces interrupt mode 0. In this mode, any pending interrupt is cleared when the status register is read but is regenerated as @@ -55,8 +62,9 @@ connected to the PWM outputs of the VT1211 :-(). The following table shows the relationship between the vt1211 inputs and the sysfs nodes. +=============== ============== =========== ================================ Sensor Voltage Mode Temp Mode Default Use (from the datasheet) ------- ------------ --------- -------------------------------- +=============== ============== =========== ================================ Reading 1 temp1 Intel thermal diode Reading 3 temp2 Internal thermal diode UCH1/Reading2 in0 temp3 NTC type thermistor @@ -65,6 +73,7 @@ UCH3 in2 temp5 VccP (processor core) UCH4 in3 temp6 +5V UCH5 in4 temp7 +12V +3.3V in5 Internal VCC (+3.3V) +=============== ============== =========== ================================ Voltage Monitoring @@ -82,19 +91,22 @@ follows. And this is of course totally dependent on the actual board implementation :-) You will have to find documentation for your own motherboard and edit sensors.conf accordingly. - Expected +============= ====== ====== ========= ============ + Expected Voltage R1 R2 Divider Raw Value ------------------------------------------------ +============= ====== ====== ========= ============ +2.5V 2K 10K 1.2 2083 mV -VccP --- --- 1.0 1400 mV (1) +VccP --- --- 1.0 1400 mV [1]_ +5V 14K 10K 2.4 2083 mV +12V 47K 10K 5.7 2105 mV -+3.3V (int) 2K 3.4K 1.588 3300 mV (2) ++3.3V (int) 2K 3.4K 1.588 3300 mV [2]_ +3.3V (ext) 6.8K 10K 1.68 1964 mV +============= ====== ====== ========= ============ + +.. [1] Depending on the CPU (1.4V is for a VIA C3 Nehemiah). -(1) Depending on the CPU (1.4V is for a VIA C3 Nehemiah). -(2) R1 and R2 for 3.3V (int) are internal to the VT1211 chip and the driver - performs the scaling and returns the properly scaled voltage value. +.. [2] R1 and R2 for 3.3V (int) are internal to the VT1211 chip and the driver + performs the scaling and returns the properly scaled voltage value. Each measured voltage has an associated low and high limit which triggers an alarm when crossed. @@ -124,35 +136,37 @@ compute temp1 (@-Offset)/Gain, (@*Gain)+Offset According to the VIA VT1211 BIOS porting guide, the following gain and offset values should be used: +=============== ======== =========== Diode Type Offset Gain ----------- ------ ---- +=============== ======== =========== Intel CPU 88.638 0.9528 - 65.000 0.9686 *) + 65.000 0.9686 [3]_ VIA C3 Ezra 83.869 0.9528 VIA C3 Ezra-T 73.869 0.9528 +=============== ======== =========== -*) This is the formula from the lm_sensors 2.10.0 sensors.conf file. I don't -know where it comes from or how it was derived, it's just listed here for -completeness. +.. [3] This is the formula from the lm_sensors 2.10.0 sensors.conf file. I don't + know where it comes from or how it was derived, it's just listed here for + completeness. Temp3-temp7 support NTC thermistors. For these channels, the driver returns the voltages as seen at the individual pins of UCH1-UCH5. The voltage at the pin (Vpin) is formed by a voltage divider made of the thermistor (Rth) and a -scaling resistor (Rs): +scaling resistor (Rs):: -Vpin = 2200 * Rth / (Rs + Rth) (2200 is the ADC max limit of 2200 mV) + Vpin = 2200 * Rth / (Rs + Rth) (2200 is the ADC max limit of 2200 mV) The equation for the thermistor is as follows (google it if you want to know -more about it): +more about it):: -Rth = Ro * exp(B * (1 / T - 1 / To)) (To is 298.15K (25C) and Ro is the - nominal resistance at 25C) + Rth = Ro * exp(B * (1 / T - 1 / To)) (To is 298.15K (25C) and Ro is the + nominal resistance at 25C) Mingling the above two equations and assuming Rs = Ro and B = 3435 yields the -following formula for sensors.conf: +following formula for sensors.conf:: -compute tempx 1 / (1 / 298.15 - (` (2200 / @ - 1)) / 3435) - 273.15, - 2200 / (1 + (^ (3435 / 298.15 - 3435 / (273.15 + @)))) + compute tempx 1 / (1 / 298.15 - (` (2200 / @ - 1)) / 3435) - 273.15, + 2200 / (1 + (^ (3435 / 298.15 - 3435 / (273.15 + @)))) Fan Speed Control @@ -176,31 +190,37 @@ registers in the VT1211 and programming one set is sufficient (actually only the first set pwm1_auto_point[1-4]_temp is writable, the second set is read-only). +========================== ========================================= PWM Auto Point PWM Output Duty-Cycle ------------------------------------------------- +========================== ========================================= pwm[1-2]_auto_point4_pwm full speed duty-cycle (hard-wired to 255) pwm[1-2]_auto_point3_pwm high speed duty-cycle pwm[1-2]_auto_point2_pwm low speed duty-cycle pwm[1-2]_auto_point1_pwm off duty-cycle (hard-wired to 0) +========================== ========================================= +========================== ================= Temp Auto Point Thermal Threshold ---------------------------------------------- +========================== ================= pwm[1-2]_auto_point4_temp full speed temp pwm[1-2]_auto_point3_temp high speed temp pwm[1-2]_auto_point2_temp low speed temp pwm[1-2]_auto_point1_temp off temp +========================== ================= Long story short, the controller implements the following algorithm to set the PWM output duty-cycle based on the input temperature: -Thermal Threshold Output Duty-Cycle - (Rising Temp) (Falling Temp) ----------------------------------------------------------- - full speed duty-cycle full speed duty-cycle +=================== ======================= ======================== +Thermal Threshold Output Duty-Cycle Output Duty-Cycle + (Rising Temp) (Falling Temp) +=================== ======================= ======================== +- full speed duty-cycle full speed duty-cycle full speed temp - high speed duty-cycle full speed duty-cycle +- high speed duty-cycle full speed duty-cycle high speed temp - low speed duty-cycle high speed duty-cycle +- low speed duty-cycle high speed duty-cycle low speed temp - off duty-cycle low speed duty-cycle +- off duty-cycle low speed duty-cycle off temp +=================== ======================= ======================== |