1 Kernel driver adm1275 2 ===================== 3 4 Supported chips: 5 6 * Analog Devices ADM1075 7 8 Prefix: 'adm1075' 9 10 Addresses scanned: - 11 12 Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1075.pdf 13 14 * Analog Devices ADM1272 15 16 Prefix: 'adm1272' 17 18 Addresses scanned: - 19 20 Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1272.pdf 21 22 * Analog Devices ADM1275 23 24 Prefix: 'adm1275' 25 26 Addresses scanned: - 27 28 Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1275.pdf 29 30 * Analog Devices ADM1276 31 32 Prefix: 'adm1276' 33 34 Addresses scanned: - 35 36 Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1276.pdf 37 38 * Analog Devices ADM1278 39 40 Prefix: 'adm1278' 41 42 Addresses scanned: - 43 44 Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1278.pdf 45 46 * Analog Devices ADM1281 47 48 Prefix: 'adm1281' 49 50 Addresses scanned: - 51 52 Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/adm1281.pdf 53 54 * Analog Devices ADM1293/ADM1294 55 56 Prefix: 'adm1293', 'adm1294' 57 58 Addresses scanned: - 59 60 Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADM1293_1294.pdf 61 62 Author: Guenter Roeck <linux@roeck-us.net> 63 64 65 Description 66 ----------- 67 68 This driver supports hardware monitoring for Analog Devices ADM1075, ADM1272, 69 ADM1275, ADM1276, ADM1278, ADM1281, ADM1293, and ADM1294 Hot-Swap Controller and 70 Digital Power Monitors. 71 72 ADM1075, ADM1272, ADM1275, ADM1276, ADM1278, ADM1281, ADM1293, and ADM1294 are hot-swap 73 controllers that allow a circuit board to be removed from or inserted into 74 a live backplane. They also feature current and voltage readback via an 75 integrated 12 bit analog-to-digital converter (ADC), accessed using a 76 PMBus interface. 77 78 The driver is a client driver to the core PMBus driver. Please see 79 Documentation/hwmon/pmbus.rst for details on PMBus client drivers. 80 81 82 Usage Notes 83 ----------- 84 85 This driver does not auto-detect devices. You will have to instantiate the 86 devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for 87 details. 88 89 The ADM1075, unlike many other PMBus devices, does not support internal voltage 90 or current scaling. Reported voltages, currents, and power are raw measurements, 91 and will typically have to be scaled. 92 93 The shunt value in micro-ohms can be set via device tree at compile-time. Please 94 refer to the Documentation/devicetree/bindings/hwmon/adi,adm1275.yaml for bindings 95 if the device tree is used. 96 97 Platform data support 98 --------------------- 99 100 The driver supports standard PMBus driver platform data. Please see 101 Documentation/hwmon/pmbus.rst for details. 102 103 104 Sysfs entries 105 ------------- 106 107 The following attributes are supported. Limits are read-write, history reset 108 attributes are write-only, all other attributes are read-only. 109 110 ======================= ======================================================= 111 inX_label "vin1" or "vout1" depending on chip variant and 112 configuration. On ADM1075, ADM1293, and ADM1294, 113 vout1 reports the voltage on the VAUX pin. 114 inX_input Measured voltage. 115 inX_min Minimum Voltage. 116 inX_max Maximum voltage. 117 inX_min_alarm Voltage low alarm. 118 inX_max_alarm Voltage high alarm. 119 inX_highest Historical maximum voltage. 120 inX_reset_history Write any value to reset history. 121 122 curr1_label "iout1" 123 curr1_input Measured current. 124 curr1_max Maximum current. 125 curr1_max_alarm Current high alarm. 126 curr1_lcrit Critical minimum current. Depending on the chip 127 configuration, either curr1_lcrit or curr1_crit is 128 supported, but not both. 129 curr1_lcrit_alarm Critical current low alarm. 130 curr1_crit Critical maximum current. Depending on the chip 131 configuration, either curr1_lcrit or curr1_crit is 132 supported, but not both. 133 curr1_crit_alarm Critical current high alarm. 134 curr1_highest Historical maximum current. 135 curr1_reset_history Write any value to reset history. 136 137 power1_label "pin1" 138 power1_input Input power. 139 power1_input_lowest Lowest observed input power. ADM1293 and ADM1294 only. 140 power1_input_highest Highest observed input power. 141 power1_reset_history Write any value to reset history. 142 143 Power attributes are supported on ADM1075, ADM1272, 144 ADM1276, ADM1293, and ADM1294. 145 146 temp1_input Chip temperature. 147 temp1_max Maximum chip temperature. 148 temp1_max_alarm Temperature alarm. 149 temp1_crit Critical chip temperature. 150 temp1_crit_alarm Critical temperature high alarm. 151 temp1_highest Highest observed temperature. 152 temp1_reset_history Write any value to reset history. 153 154 Temperature attributes are supported on ADM1272 and 155 ADM1278, and ADM1281. 156 ======================= =======================================================
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.