Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 EST.
1 Kernel driver max34440 2 ====================== 3 4 Supported chips: 5 * Maxim MAX34440 6 Prefixes: 'max34440' 7 Addresses scanned: - 8 Datasheet: http://datasheets.maximintegrated.com/en/ds/MAX34440.pdf 9 * Maxim MAX34441 10 PMBus 5-Channel Power-Supply Manager and Intelligent Fan Controller 11 Prefixes: 'max34441' 12 Addresses scanned: - 13 Datasheet: http://datasheets.maximintegrated.com/en/ds/MAX34441.pdf 14 * Maxim MAX34446 15 PMBus Power-Supply Data Logger 16 Prefixes: 'max34446' 17 Addresses scanned: - 18 Datasheet: http://datasheets.maximintegrated.com/en/ds/MAX34446.pdf 19 * Maxim MAX34460 20 PMBus 12-Channel Voltage Monitor & Sequencer 21 Prefix: 'max34460' 22 Addresses scanned: - 23 Datasheet: http://datasheets.maximintegrated.com/en/ds/MAX34460.pdf 24 * Maxim MAX34461 25 PMBus 16-Channel Voltage Monitor & Sequencer 26 Prefix: 'max34461' 27 Addresses scanned: - 28 Datasheet: http://datasheets.maximintegrated.com/en/ds/MAX34461.pdf 29 30 Author: Guenter Roeck <linux@roeck-us.net> 31 32 33 Description 34 ----------- 35 36 This driver supports hardware monitoring for Maxim MAX34440 PMBus 6-Channel 37 Power-Supply Manager, MAX34441 PMBus 5-Channel Power-Supply Manager 38 and Intelligent Fan Controller, and MAX34446 PMBus Power-Supply Data Logger. 39 It also supports the MAX34460 and MAX34461 PMBus Voltage Monitor & Sequencers. 40 The MAX34460 supports 12 voltage channels, and the MAX34461 supports 16 voltage 41 channels. 42 43 The driver is a client driver to the core PMBus driver. Please see 44 Documentation/hwmon/pmbus for details on PMBus client drivers. 45 46 47 Usage Notes 48 ----------- 49 50 This driver does not auto-detect devices. You will have to instantiate the 51 devices explicitly. Please see Documentation/i2c/instantiating-devices for 52 details. 53 54 For MAX34446, the value of the currX_crit attribute determines if current or 55 voltage measurement is enabled for a given channel. Voltage measurement is 56 enabled if currX_crit is set to 0; current measurement is enabled if the 57 attribute is set to a positive value. Power measurement is only enabled if 58 channel 1 (3) is configured for voltage measurement, and channel 2 (4) is 59 configured for current measurement. 60 61 62 Platform data support 63 --------------------- 64 65 The driver supports standard PMBus driver platform data. 66 67 68 Sysfs entries 69 ------------- 70 71 The following attributes are supported. Limits are read-write; all other 72 attributes are read-only. 73 74 in[1-6]_label "vout[1-6]". 75 in[1-6]_input Measured voltage. From READ_VOUT register. 76 in[1-6]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register. 77 in[1-6]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. 78 in[1-6]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register. 79 in[1-6]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register. 80 in[1-6]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. 81 in[1-6]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. 82 in[1-6]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status. 83 in[1-6]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status. 84 in[1-6]_lowest Historical minimum voltage. 85 in[1-6]_highest Historical maximum voltage. 86 in[1-6]_reset_history Write any value to reset history. 87 88 MAX34446 only supports in[1-4]. 89 90 curr[1-6]_label "iout[1-6]". 91 curr[1-6]_input Measured current. From READ_IOUT register. 92 curr[1-6]_max Maximum current. From IOUT_OC_WARN_LIMIT register. 93 curr[1-6]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register. 94 curr[1-6]_max_alarm Current high alarm. From IOUT_OC_WARNING status. 95 curr[1-6]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. 96 curr[1-4]_average Historical average current (MAX34446 only). 97 curr[1-6]_highest Historical maximum current. 98 curr[1-6]_reset_history Write any value to reset history. 99 100 in6 and curr6 attributes only exist for MAX34440. 101 MAX34446 only supports curr[1-4]. 102 103 power[1,3]_label "pout[1,3]" 104 power[1,3]_input Measured power. 105 power[1,3]_average Historical average power. 106 power[1,3]_highest Historical maximum power. 107 108 Power attributes only exist for MAX34446. 109 110 temp[1-8]_input Measured temperatures. From READ_TEMPERATURE_1 register. 111 temp1 is the chip's internal temperature. temp2..temp5 112 are remote I2C temperature sensors. For MAX34441, temp6 113 is a remote thermal-diode sensor. For MAX34440, temp6..8 114 are remote I2C temperature sensors. 115 temp[1-8]_max Maximum temperature. From OT_WARN_LIMIT register. 116 temp[1-8]_crit Critical high temperature. From OT_FAULT_LIMIT register. 117 temp[1-8]_max_alarm Temperature high alarm. 118 temp[1-8]_crit_alarm Temperature critical high alarm. 119 temp[1-8]_average Historical average temperature (MAX34446 only). 120 temp[1-8]_highest Historical maximum temperature. 121 temp[1-8]_reset_history Write any value to reset history. 122 123 temp7 and temp8 attributes only exist for MAX34440. 124 MAX34446 only supports temp[1-3]. 125 126 MAX34460 supports attribute groups in[1-12] and temp[1-5]. 127 MAX34461 supports attribute groups in[1-16] and temp[1-5].