17ebd8b66SMauro Carvalho ChehabKernel driver dme1737 27ebd8b66SMauro Carvalho Chehab===================== 37ebd8b66SMauro Carvalho Chehab 47ebd8b66SMauro Carvalho ChehabSupported chips: 57ebd8b66SMauro Carvalho Chehab 67ebd8b66SMauro Carvalho Chehab * SMSC DME1737 and compatibles (like Asus A8000) 77ebd8b66SMauro Carvalho Chehab 87ebd8b66SMauro Carvalho Chehab Prefix: 'dme1737' 97ebd8b66SMauro Carvalho Chehab 107ebd8b66SMauro Carvalho Chehab Addresses scanned: I2C 0x2c, 0x2d, 0x2e 117ebd8b66SMauro Carvalho Chehab 127ebd8b66SMauro Carvalho Chehab Datasheet: Provided by SMSC upon request and under NDA 137ebd8b66SMauro Carvalho Chehab 147ebd8b66SMauro Carvalho Chehab * SMSC SCH3112, SCH3114, SCH3116 157ebd8b66SMauro Carvalho Chehab 167ebd8b66SMauro Carvalho Chehab Prefix: 'sch311x' 177ebd8b66SMauro Carvalho Chehab 187ebd8b66SMauro Carvalho Chehab Addresses scanned: none, address read from Super-I/O config space 197ebd8b66SMauro Carvalho Chehab 207ebd8b66SMauro Carvalho Chehab Datasheet: Available on the Internet 217ebd8b66SMauro Carvalho Chehab 227ebd8b66SMauro Carvalho Chehab * SMSC SCH5027 237ebd8b66SMauro Carvalho Chehab 247ebd8b66SMauro Carvalho Chehab Prefix: 'sch5027' 257ebd8b66SMauro Carvalho Chehab 267ebd8b66SMauro Carvalho Chehab Addresses scanned: I2C 0x2c, 0x2d, 0x2e 277ebd8b66SMauro Carvalho Chehab 287ebd8b66SMauro Carvalho Chehab Datasheet: Provided by SMSC upon request and under NDA 297ebd8b66SMauro Carvalho Chehab 307ebd8b66SMauro Carvalho Chehab * SMSC SCH5127 317ebd8b66SMauro Carvalho Chehab 327ebd8b66SMauro Carvalho Chehab Prefix: 'sch5127' 337ebd8b66SMauro Carvalho Chehab 347ebd8b66SMauro Carvalho Chehab Addresses scanned: none, address read from Super-I/O config space 357ebd8b66SMauro Carvalho Chehab 367ebd8b66SMauro Carvalho Chehab Datasheet: Provided by SMSC upon request and under NDA 377ebd8b66SMauro Carvalho Chehab 387ebd8b66SMauro Carvalho ChehabAuthors: 397ebd8b66SMauro Carvalho Chehab Juerg Haefliger <juergh@gmail.com> 407ebd8b66SMauro Carvalho Chehab 417ebd8b66SMauro Carvalho Chehab 427ebd8b66SMauro Carvalho ChehabModule Parameters 437ebd8b66SMauro Carvalho Chehab----------------- 447ebd8b66SMauro Carvalho Chehab 457ebd8b66SMauro Carvalho Chehab* force_start: bool 467ebd8b66SMauro Carvalho Chehab Enables the monitoring of voltage, fan and temp inputs 477ebd8b66SMauro Carvalho Chehab and PWM output control functions. Using this parameter 487ebd8b66SMauro Carvalho Chehab shouldn't be required since the BIOS usually takes care 497ebd8b66SMauro Carvalho Chehab of this. 507ebd8b66SMauro Carvalho Chehab 517ebd8b66SMauro Carvalho Chehab* probe_all_addr: bool 527ebd8b66SMauro Carvalho Chehab Include non-standard LPC addresses 0x162e and 0x164e 537ebd8b66SMauro Carvalho Chehab when probing for ISA devices. This is required for the 547ebd8b66SMauro Carvalho Chehab following boards: 557ebd8b66SMauro Carvalho Chehab - VIA EPIA SN18000 567ebd8b66SMauro Carvalho Chehab 577ebd8b66SMauro Carvalho Chehab 587ebd8b66SMauro Carvalho ChehabDescription 597ebd8b66SMauro Carvalho Chehab----------- 607ebd8b66SMauro Carvalho Chehab 617ebd8b66SMauro Carvalho ChehabThis driver implements support for the hardware monitoring capabilities of the 627ebd8b66SMauro Carvalho ChehabSMSC DME1737 and Asus A8000 (which are the same), SMSC SCH5027, SCH311x, 637ebd8b66SMauro Carvalho Chehaband SCH5127 Super-I/O chips. These chips feature monitoring of 3 temp sensors 647ebd8b66SMauro Carvalho Chehabtemp[1-3] (2 remote diodes and 1 internal), 8 voltages in[0-7] (7 external and 657ebd8b66SMauro Carvalho Chehab1 internal) and up to 6 fan speeds fan[1-6]. Additionally, the chips implement 667ebd8b66SMauro Carvalho Chehabup to 5 PWM outputs pwm[1-3,5-6] for controlling fan speeds both manually and 677ebd8b66SMauro Carvalho Chehabautomatically. 687ebd8b66SMauro Carvalho Chehab 697ebd8b66SMauro Carvalho ChehabFor the DME1737, A8000 and SCH5027, fan[1-2] and pwm[1-2] are always present. 707ebd8b66SMauro Carvalho ChehabFan[3-6] and pwm[3,5-6] are optional features and their availability depends on 717ebd8b66SMauro Carvalho Chehabthe configuration of the chip. The driver will detect which features are 727ebd8b66SMauro Carvalho Chehabpresent during initialization and create the sysfs attributes accordingly. 737ebd8b66SMauro Carvalho Chehab 747ebd8b66SMauro Carvalho ChehabFor the SCH311x and SCH5127, fan[1-3] and pwm[1-3] are always present and 757ebd8b66SMauro Carvalho Chehabfan[4-6] and pwm[5-6] don't exist. 767ebd8b66SMauro Carvalho Chehab 777ebd8b66SMauro Carvalho ChehabThe hardware monitoring features of the DME1737, A8000, and SCH5027 are only 787ebd8b66SMauro Carvalho Chehabaccessible via SMBus, while the SCH311x and SCH5127 only provide access via 797ebd8b66SMauro Carvalho Chehabthe ISA bus. The driver will therefore register itself as an I2C client driver 807ebd8b66SMauro Carvalho Chehabif it detects a DME1737, A8000, or SCH5027 and as a platform driver if it 817ebd8b66SMauro Carvalho Chehabdetects a SCH311x or SCH5127 chip. 827ebd8b66SMauro Carvalho Chehab 837ebd8b66SMauro Carvalho Chehab 847ebd8b66SMauro Carvalho ChehabVoltage Monitoring 857ebd8b66SMauro Carvalho Chehab------------------ 867ebd8b66SMauro Carvalho Chehab 877ebd8b66SMauro Carvalho ChehabThe voltage inputs are sampled with 12-bit resolution and have internal 887ebd8b66SMauro Carvalho Chehabscaling resistors. The values returned by the driver therefore reflect true 897ebd8b66SMauro Carvalho Chehabmillivolts and don't need scaling. The voltage inputs are mapped as follows 907ebd8b66SMauro Carvalho Chehab(the last column indicates the input ranges): 917ebd8b66SMauro Carvalho Chehab 927ebd8b66SMauro Carvalho ChehabDME1737, A8000:: 937ebd8b66SMauro Carvalho Chehab 947ebd8b66SMauro Carvalho Chehab in0: +5VTR (+5V standby) 0V - 6.64V 957ebd8b66SMauro Carvalho Chehab in1: Vccp (processor core) 0V - 3V 967ebd8b66SMauro Carvalho Chehab in2: VCC (internal +3.3V) 0V - 4.38V 977ebd8b66SMauro Carvalho Chehab in3: +5V 0V - 6.64V 987ebd8b66SMauro Carvalho Chehab in4: +12V 0V - 16V 997ebd8b66SMauro Carvalho Chehab in5: VTR (+3.3V standby) 0V - 4.38V 1007ebd8b66SMauro Carvalho Chehab in6: Vbat (+3.0V) 0V - 4.38V 1017ebd8b66SMauro Carvalho Chehab 1027ebd8b66SMauro Carvalho ChehabSCH311x:: 1037ebd8b66SMauro Carvalho Chehab 1047ebd8b66SMauro Carvalho Chehab in0: +2.5V 0V - 3.32V 1057ebd8b66SMauro Carvalho Chehab in1: Vccp (processor core) 0V - 2V 1067ebd8b66SMauro Carvalho Chehab in2: VCC (internal +3.3V) 0V - 4.38V 1077ebd8b66SMauro Carvalho Chehab in3: +5V 0V - 6.64V 1087ebd8b66SMauro Carvalho Chehab in4: +12V 0V - 16V 1097ebd8b66SMauro Carvalho Chehab in5: VTR (+3.3V standby) 0V - 4.38V 1107ebd8b66SMauro Carvalho Chehab in6: Vbat (+3.0V) 0V - 4.38V 1117ebd8b66SMauro Carvalho Chehab 1127ebd8b66SMauro Carvalho ChehabSCH5027:: 1137ebd8b66SMauro Carvalho Chehab 1147ebd8b66SMauro Carvalho Chehab in0: +5VTR (+5V standby) 0V - 6.64V 1157ebd8b66SMauro Carvalho Chehab in1: Vccp (processor core) 0V - 3V 1167ebd8b66SMauro Carvalho Chehab in2: VCC (internal +3.3V) 0V - 4.38V 1177ebd8b66SMauro Carvalho Chehab in3: V2_IN 0V - 1.5V 1187ebd8b66SMauro Carvalho Chehab in4: V1_IN 0V - 1.5V 1197ebd8b66SMauro Carvalho Chehab in5: VTR (+3.3V standby) 0V - 4.38V 1207ebd8b66SMauro Carvalho Chehab in6: Vbat (+3.0V) 0V - 4.38V 1217ebd8b66SMauro Carvalho Chehab 1227ebd8b66SMauro Carvalho ChehabSCH5127:: 1237ebd8b66SMauro Carvalho Chehab 1247ebd8b66SMauro Carvalho Chehab in0: +2.5 0V - 3.32V 1257ebd8b66SMauro Carvalho Chehab in1: Vccp (processor core) 0V - 3V 1267ebd8b66SMauro Carvalho Chehab in2: VCC (internal +3.3V) 0V - 4.38V 1277ebd8b66SMauro Carvalho Chehab in3: V2_IN 0V - 1.5V 1287ebd8b66SMauro Carvalho Chehab in4: V1_IN 0V - 1.5V 1297ebd8b66SMauro Carvalho Chehab in5: VTR (+3.3V standby) 0V - 4.38V 1307ebd8b66SMauro Carvalho Chehab in6: Vbat (+3.0V) 0V - 4.38V 1317ebd8b66SMauro Carvalho Chehab in7: Vtrip (+1.5V) 0V - 1.99V 1327ebd8b66SMauro Carvalho Chehab 1337ebd8b66SMauro Carvalho ChehabEach voltage input has associated min and max limits which trigger an alarm 1347ebd8b66SMauro Carvalho Chehabwhen crossed. 1357ebd8b66SMauro Carvalho Chehab 1367ebd8b66SMauro Carvalho Chehab 1377ebd8b66SMauro Carvalho ChehabTemperature Monitoring 1387ebd8b66SMauro Carvalho Chehab---------------------- 1397ebd8b66SMauro Carvalho Chehab 1407ebd8b66SMauro Carvalho ChehabTemperatures are measured with 12-bit resolution and reported in millidegree 1417ebd8b66SMauro Carvalho ChehabCelsius. The chip also features offsets for all 3 temperature inputs which - 1427ebd8b66SMauro Carvalho Chehabwhen programmed - get added to the input readings. The chip does all the 1437ebd8b66SMauro Carvalho Chehabscaling by itself and the driver therefore reports true temperatures that don't 1447ebd8b66SMauro Carvalho Chehabneed any user-space adjustments. The temperature inputs are mapped as follows 1457ebd8b66SMauro Carvalho Chehab(the last column indicates the input ranges):: 1467ebd8b66SMauro Carvalho Chehab 1477ebd8b66SMauro Carvalho Chehab temp1: Remote diode 1 (3904 type) temperature -127C - +127C 1487ebd8b66SMauro Carvalho Chehab temp2: DME1737 internal temperature -127C - +127C 1497ebd8b66SMauro Carvalho Chehab temp3: Remote diode 2 (3904 type) temperature -127C - +127C 1507ebd8b66SMauro Carvalho Chehab 1517ebd8b66SMauro Carvalho ChehabEach temperature input has associated min and max limits which trigger an alarm 1527ebd8b66SMauro Carvalho Chehabwhen crossed. Additionally, each temperature input has a fault attribute that 1537ebd8b66SMauro Carvalho Chehabreturns 1 when a faulty diode or an unconnected input is detected and 0 1547ebd8b66SMauro Carvalho Chehabotherwise. 1557ebd8b66SMauro Carvalho Chehab 1567ebd8b66SMauro Carvalho Chehab 1577ebd8b66SMauro Carvalho ChehabFan Monitoring 1587ebd8b66SMauro Carvalho Chehab-------------- 1597ebd8b66SMauro Carvalho Chehab 1607ebd8b66SMauro Carvalho ChehabFan RPMs are measured with 16-bit resolution. The chip provides inputs for 6 1617ebd8b66SMauro Carvalho Chehabfan tachometers. All 6 inputs have an associated min limit which triggers an 1627ebd8b66SMauro Carvalho Chehabalarm when crossed. Fan inputs 1-4 provide type attributes that need to be set 1637ebd8b66SMauro Carvalho Chehabto the number of pulses per fan revolution that the connected tachometer 1647ebd8b66SMauro Carvalho Chehabgenerates. Supported values are 1, 2, and 4. Fan inputs 5-6 only support fans 1657ebd8b66SMauro Carvalho Chehabthat generate 2 pulses per revolution. Fan inputs 5-6 also provide a max 1667ebd8b66SMauro Carvalho Chehabattribute that needs to be set to the maximum attainable RPM (fan at 100% duty- 1677ebd8b66SMauro Carvalho Chehabcycle) of the input. The chip adjusts the sampling rate based on this value. 1687ebd8b66SMauro Carvalho Chehab 1697ebd8b66SMauro Carvalho Chehab 1707ebd8b66SMauro Carvalho ChehabPWM Output Control 1717ebd8b66SMauro Carvalho Chehab------------------ 1727ebd8b66SMauro Carvalho Chehab 1737ebd8b66SMauro Carvalho ChehabThis chip features 5 PWM outputs. PWM outputs 1-3 are associated with fan 1747ebd8b66SMauro Carvalho Chehabinputs 1-3 and PWM outputs 5-6 are associated with fan inputs 5-6. PWM outputs 1757ebd8b66SMauro Carvalho Chehab1-3 can be configured to operate either in manual or automatic mode by setting 1767ebd8b66SMauro Carvalho Chehabthe appropriate enable attribute accordingly. PWM outputs 5-6 can only operate 1777ebd8b66SMauro Carvalho Chehabin manual mode, their enable attributes are therefore read-only. When set to 1787ebd8b66SMauro Carvalho Chehabmanual mode, the fan speed is set by writing the duty-cycle value to the 1797ebd8b66SMauro Carvalho Chehabappropriate PWM attribute. In automatic mode, the PWM attribute returns the 1807ebd8b66SMauro Carvalho Chehabcurrent duty-cycle as set by the fan controller in the chip. All PWM outputs 1817ebd8b66SMauro Carvalho Chehabsupport the setting of the output frequency via the freq attribute. 1827ebd8b66SMauro Carvalho Chehab 1837ebd8b66SMauro Carvalho ChehabIn automatic mode, the chip supports the setting of the PWM ramp rate which 1847ebd8b66SMauro Carvalho Chehabdefines how fast the PWM output is adjusting to changes of the associated 1857ebd8b66SMauro Carvalho Chehabtemperature input. Associating PWM outputs to temperature inputs is done via 1867ebd8b66SMauro Carvalho Chehabtemperature zones. The chip features 3 zones whose assignments to temperature 1877ebd8b66SMauro Carvalho Chehabinputs is static and determined during initialization. These assignments can 1887ebd8b66SMauro Carvalho Chehabbe retrieved via the zone[1-3]_auto_channels_temp attributes. Each PWM output 1897ebd8b66SMauro Carvalho Chehabis assigned to one (or hottest of multiple) temperature zone(s) through the 1907ebd8b66SMauro Carvalho Chehabpwm[1-3]_auto_channels_zone attributes. Each PWM output has 3 distinct output 1917ebd8b66SMauro Carvalho Chehabduty-cycles: full, low, and min. Full is internally hard-wired to 255 (100%) 1927ebd8b66SMauro Carvalho Chehaband low and min can be programmed via pwm[1-3]_auto_point1_pwm and 1937ebd8b66SMauro Carvalho Chehabpwm[1-3]_auto_pwm_min, respectively. The thermal thresholds of the zones are 1947ebd8b66SMauro Carvalho Chehabprogrammed via zone[1-3]_auto_point[1-3]_temp and 1957ebd8b66SMauro Carvalho Chehabzone[1-3]_auto_point1_temp_hyst: 1967ebd8b66SMauro Carvalho Chehab 1977ebd8b66SMauro Carvalho Chehab =============================== ======================================= 1987ebd8b66SMauro Carvalho Chehab pwm[1-3]_auto_point2_pwm full-speed duty-cycle (255, i.e., 100%) 1997ebd8b66SMauro Carvalho Chehab pwm[1-3]_auto_point1_pwm low-speed duty-cycle 2007ebd8b66SMauro Carvalho Chehab pwm[1-3]_auto_pwm_min min-speed duty-cycle 2017ebd8b66SMauro Carvalho Chehab 2027ebd8b66SMauro Carvalho Chehab zone[1-3]_auto_point3_temp full-speed temp (all outputs) 2037ebd8b66SMauro Carvalho Chehab zone[1-3]_auto_point2_temp full-speed temp 2047ebd8b66SMauro Carvalho Chehab zone[1-3]_auto_point1_temp low-speed temp 2057ebd8b66SMauro Carvalho Chehab zone[1-3]_auto_point1_temp_hyst min-speed temp 2067ebd8b66SMauro Carvalho Chehab =============================== ======================================= 2077ebd8b66SMauro Carvalho Chehab 2087ebd8b66SMauro Carvalho ChehabThe chip adjusts the output duty-cycle linearly in the range of auto_point1_pwm 2097ebd8b66SMauro Carvalho Chehabto auto_point2_pwm if the temperature of the associated zone is between 2107ebd8b66SMauro Carvalho Chehabauto_point1_temp and auto_point2_temp. If the temperature drops below the 2117ebd8b66SMauro Carvalho Chehabauto_point1_temp_hyst value, the output duty-cycle is set to the auto_pwm_min 2127ebd8b66SMauro Carvalho Chehabvalue which only supports two values: 0 or auto_point1_pwm. That means that the 2137ebd8b66SMauro Carvalho Chehabfan either turns completely off or keeps spinning with the low-speed 2147ebd8b66SMauro Carvalho Chehabduty-cycle. If any of the temperatures rise above the auto_point3_temp value, 2157ebd8b66SMauro Carvalho Chehaball PWM outputs are set to 100% duty-cycle. 2167ebd8b66SMauro Carvalho Chehab 2177ebd8b66SMauro Carvalho ChehabFollowing is another representation of how the chip sets the output duty-cycle 2187ebd8b66SMauro Carvalho Chehabbased on the temperature of the associated thermal zone: 2197ebd8b66SMauro Carvalho Chehab 2207ebd8b66SMauro Carvalho Chehab =============== =============== ================= 2217ebd8b66SMauro Carvalho Chehab Temperature Duty-Cycle Duty-Cycle 2227ebd8b66SMauro Carvalho Chehab Rising Temp Falling Temp 2237ebd8b66SMauro Carvalho Chehab =============== =============== ================= 2247ebd8b66SMauro Carvalho Chehab full-speed full-speed full-speed 2257ebd8b66SMauro Carvalho Chehab 2267ebd8b66SMauro Carvalho Chehab - < linearly - 2277ebd8b66SMauro Carvalho Chehab adjusted 2287ebd8b66SMauro Carvalho Chehab duty-cycle > 2297ebd8b66SMauro Carvalho Chehab 2307ebd8b66SMauro Carvalho Chehab low-speed low-speed low-speed 2317ebd8b66SMauro Carvalho Chehab - min-speed low-speed 2327ebd8b66SMauro Carvalho Chehab min-speed min-speed min-speed 2337ebd8b66SMauro Carvalho Chehab - min-speed min-speed 2347ebd8b66SMauro Carvalho Chehab =============== =============== ================= 2357ebd8b66SMauro Carvalho Chehab 2367ebd8b66SMauro Carvalho Chehab 2377ebd8b66SMauro Carvalho ChehabSysfs Attributes 2387ebd8b66SMauro Carvalho Chehab---------------- 2397ebd8b66SMauro Carvalho Chehab 2407ebd8b66SMauro Carvalho ChehabFollowing is a list of all sysfs attributes that the driver provides, their 2417ebd8b66SMauro Carvalho Chehabpermissions and a short description: 2427ebd8b66SMauro Carvalho Chehab 2437ebd8b66SMauro Carvalho Chehab=============================== ======= ======================================= 2447ebd8b66SMauro Carvalho ChehabName Perm Description 2457ebd8b66SMauro Carvalho Chehab=============================== ======= ======================================= 2467ebd8b66SMauro Carvalho Chehabcpu0_vid RO CPU core reference voltage in 2477ebd8b66SMauro Carvalho Chehab millivolts. 2487ebd8b66SMauro Carvalho Chehabvrm RW Voltage regulator module version 2497ebd8b66SMauro Carvalho Chehab number. 2507ebd8b66SMauro Carvalho Chehab 2517ebd8b66SMauro Carvalho Chehabin[0-7]_input RO Measured voltage in millivolts. 2527ebd8b66SMauro Carvalho Chehabin[0-7]_min RW Low limit for voltage input. 2537ebd8b66SMauro Carvalho Chehabin[0-7]_max RW High limit for voltage input. 2547ebd8b66SMauro Carvalho Chehabin[0-7]_alarm RO Voltage input alarm. Returns 1 if 2557ebd8b66SMauro Carvalho Chehab voltage input is or went outside the 2567ebd8b66SMauro Carvalho Chehab associated min-max range, 0 otherwise. 2577ebd8b66SMauro Carvalho Chehab 2587ebd8b66SMauro Carvalho Chehabtemp[1-3]_input RO Measured temperature in millidegree 2597ebd8b66SMauro Carvalho Chehab Celsius. 2607ebd8b66SMauro Carvalho Chehabtemp[1-3]_min RW Low limit for temp input. 2617ebd8b66SMauro Carvalho Chehabtemp[1-3]_max RW High limit for temp input. 2627ebd8b66SMauro Carvalho Chehabtemp[1-3]_offset RW Offset for temp input. This value will 2637ebd8b66SMauro Carvalho Chehab be added by the chip to the measured 2647ebd8b66SMauro Carvalho Chehab temperature. 2657ebd8b66SMauro Carvalho Chehabtemp[1-3]_alarm RO Alarm for temp input. Returns 1 if temp 2667ebd8b66SMauro Carvalho Chehab input is or went outside the associated 2677ebd8b66SMauro Carvalho Chehab min-max range, 0 otherwise. 2687ebd8b66SMauro Carvalho Chehabtemp[1-3]_fault RO Temp input fault. Returns 1 if the chip 2697ebd8b66SMauro Carvalho Chehab detects a faulty thermal diode or an 2707ebd8b66SMauro Carvalho Chehab unconnected temp input, 0 otherwise. 2717ebd8b66SMauro Carvalho Chehab 2727ebd8b66SMauro Carvalho Chehabzone[1-3]_auto_channels_temp RO Temperature zone to temperature input 2737ebd8b66SMauro Carvalho Chehab mapping. This attribute is a bitfield 2747ebd8b66SMauro Carvalho Chehab and supports the following values: 2757ebd8b66SMauro Carvalho Chehab 2767ebd8b66SMauro Carvalho Chehab - 1: temp1 2777ebd8b66SMauro Carvalho Chehab - 2: temp2 2787ebd8b66SMauro Carvalho Chehab - 4: temp3 2797ebd8b66SMauro Carvalho Chehabzone[1-3]_auto_point1_temp_hyst RW Auto PWM temp point1 hysteresis. The 2807ebd8b66SMauro Carvalho Chehab output of the corresponding PWM is set 2817ebd8b66SMauro Carvalho Chehab to the pwm_auto_min value if the temp 2827ebd8b66SMauro Carvalho Chehab falls below the auto_point1_temp_hyst 2837ebd8b66SMauro Carvalho Chehab value. 2847ebd8b66SMauro Carvalho Chehabzone[1-3]_auto_point[1-3]_temp RW Auto PWM temp points. Auto_point1 is 2857ebd8b66SMauro Carvalho Chehab the low-speed temp, auto_point2 is the 2867ebd8b66SMauro Carvalho Chehab full-speed temp, and auto_point3 is the 2877ebd8b66SMauro Carvalho Chehab temp at which all PWM outputs are set 2887ebd8b66SMauro Carvalho Chehab to full-speed (100% duty-cycle). 2897ebd8b66SMauro Carvalho Chehab 2907ebd8b66SMauro Carvalho Chehabfan[1-6]_input RO Measured fan speed in RPM. 2917ebd8b66SMauro Carvalho Chehabfan[1-6]_min RW Low limit for fan input. 2927ebd8b66SMauro Carvalho Chehabfan[1-6]_alarm RO Alarm for fan input. Returns 1 if fan 2937ebd8b66SMauro Carvalho Chehab input is or went below the associated 2947ebd8b66SMauro Carvalho Chehab min value, 0 otherwise. 2957ebd8b66SMauro Carvalho Chehabfan[1-4]_type RW Type of attached fan. Expressed in 2967ebd8b66SMauro Carvalho Chehab number of pulses per revolution that 2977ebd8b66SMauro Carvalho Chehab the fan generates. Supported values are 2987ebd8b66SMauro Carvalho Chehab 1, 2, and 4. 2997ebd8b66SMauro Carvalho Chehabfan[5-6]_max RW Max attainable RPM at 100% duty-cycle. 3007ebd8b66SMauro Carvalho Chehab Required for chip to adjust the 3017ebd8b66SMauro Carvalho Chehab sampling rate accordingly. 3027ebd8b66SMauro Carvalho Chehab 3037ebd8b66SMauro Carvalho Chehabpmw[1-3,5-6] RO/RW Duty-cycle of PWM output. Supported 3047ebd8b66SMauro Carvalho Chehab values are 0-255 (0%-100%). Only 3057ebd8b66SMauro Carvalho Chehab writeable if the associated PWM is in 3067ebd8b66SMauro Carvalho Chehab manual mode. 3077ebd8b66SMauro Carvalho Chehabpwm[1-3]_enable RW Enable of PWM outputs 1-3. Supported 3087ebd8b66SMauro Carvalho Chehab values are: 3097ebd8b66SMauro Carvalho Chehab 3107ebd8b66SMauro Carvalho Chehab - 0: turned off (output @ 100%) 3117ebd8b66SMauro Carvalho Chehab - 1: manual mode 3127ebd8b66SMauro Carvalho Chehab - 2: automatic mode 3137ebd8b66SMauro Carvalho Chehabpwm[5-6]_enable RO Enable of PWM outputs 5-6. Always 3147ebd8b66SMauro Carvalho Chehab returns 1 since these 2 outputs are 3157ebd8b66SMauro Carvalho Chehab hard-wired to manual mode. 3167ebd8b66SMauro Carvalho Chehabpmw[1-3,5-6]_freq RW Frequency of PWM output. Supported 3177ebd8b66SMauro Carvalho Chehab values are in the range 11Hz-30000Hz 3187ebd8b66SMauro Carvalho Chehab (default is 25000Hz). 3197ebd8b66SMauro Carvalho Chehabpmw[1-3]_ramp_rate RW Ramp rate of PWM output. Determines how 3207ebd8b66SMauro Carvalho Chehab fast the PWM duty-cycle will change 3217ebd8b66SMauro Carvalho Chehab when the PWM is in automatic mode. 3227ebd8b66SMauro Carvalho Chehab Expressed in ms per PWM step. Supported 3237ebd8b66SMauro Carvalho Chehab values are in the range 0ms-206ms 3247ebd8b66SMauro Carvalho Chehab (default is 0, which means the duty- 3257ebd8b66SMauro Carvalho Chehab cycle changes instantly). 3267ebd8b66SMauro Carvalho Chehabpwm[1-3]_auto_channels_zone RW PWM output to temperature zone mapping. 3277ebd8b66SMauro Carvalho Chehab This attribute is a bitfield and 3287ebd8b66SMauro Carvalho Chehab supports the following values: 3297ebd8b66SMauro Carvalho Chehab 3307ebd8b66SMauro Carvalho Chehab - 1: zone1 3317ebd8b66SMauro Carvalho Chehab - 2: zone2 3327ebd8b66SMauro Carvalho Chehab - 4: zone3 3337ebd8b66SMauro Carvalho Chehab - 6: highest of zone[2-3] 3347ebd8b66SMauro Carvalho Chehab - 7: highest of zone[1-3] 3357ebd8b66SMauro Carvalho Chehabpwm[1-3]_auto_pwm_min RW Auto PWM min pwm. Minimum PWM duty- 3367ebd8b66SMauro Carvalho Chehab cycle. Supported values are 0 or 3377ebd8b66SMauro Carvalho Chehab auto_point1_pwm. 3387ebd8b66SMauro Carvalho Chehabpwm[1-3]_auto_point1_pwm RW Auto PWM pwm point. Auto_point1 is the 3397ebd8b66SMauro Carvalho Chehab low-speed duty-cycle. 3407ebd8b66SMauro Carvalho Chehabpwm[1-3]_auto_point2_pwm RO Auto PWM pwm point. Auto_point2 is the 3417ebd8b66SMauro Carvalho Chehab full-speed duty-cycle which is hard- 3427ebd8b66SMauro Carvalho Chehab wired to 255 (100% duty-cycle). 3437ebd8b66SMauro Carvalho Chehab=============================== ======= ======================================= 3447ebd8b66SMauro Carvalho Chehab 3457ebd8b66SMauro Carvalho ChehabChip Differences 3467ebd8b66SMauro Carvalho Chehab---------------- 3477ebd8b66SMauro Carvalho Chehab 3487ebd8b66SMauro Carvalho Chehab======================= ======= ======= ======= ======= 3497ebd8b66SMauro Carvalho ChehabFeature dme1737 sch311x sch5027 sch5127 3507ebd8b66SMauro Carvalho Chehab======================= ======= ======= ======= ======= 3517ebd8b66SMauro Carvalho Chehabtemp[1-3]_offset yes yes 3527ebd8b66SMauro Carvalho Chehabvid yes 3537ebd8b66SMauro Carvalho Chehabzone3 yes yes yes 3547ebd8b66SMauro Carvalho Chehabzone[1-3]_hyst yes yes 3557ebd8b66SMauro Carvalho Chehabpwm min/off yes yes 3567ebd8b66SMauro Carvalho Chehabfan3 opt yes opt yes 3577ebd8b66SMauro Carvalho Chehabpwm3 opt yes opt yes 3587ebd8b66SMauro Carvalho Chehabfan4 opt opt 3597ebd8b66SMauro Carvalho Chehabfan5 opt opt 3607ebd8b66SMauro Carvalho Chehabpwm5 opt opt 3617ebd8b66SMauro Carvalho Chehabfan6 opt opt 3627ebd8b66SMauro Carvalho Chehabpwm6 opt opt 3637ebd8b66SMauro Carvalho Chehabin7 yes 3647ebd8b66SMauro Carvalho Chehab======================= ======= ======= ======= ======= 365