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148 lines
4.4 KiB
148 lines
4.4 KiB
Kernel driver adm1275 |
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===================== |
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Supported chips: |
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* Analog Devices ADM1075 |
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Prefix: 'adm1075' |
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Addresses scanned: - |
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Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1075.pdf |
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* Analog Devices ADM1272 |
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Prefix: 'adm1272' |
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Addresses scanned: - |
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Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1272.pdf |
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* Analog Devices ADM1275 |
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Prefix: 'adm1275' |
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Addresses scanned: - |
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Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1275.pdf |
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* Analog Devices ADM1276 |
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Prefix: 'adm1276' |
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Addresses scanned: - |
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Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1276.pdf |
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* Analog Devices ADM1278 |
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Prefix: 'adm1278' |
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Addresses scanned: - |
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Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1278.pdf |
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* Analog Devices ADM1293/ADM1294 |
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Prefix: 'adm1293', 'adm1294' |
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Addresses scanned: - |
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Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADM1293_1294.pdf |
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Author: Guenter Roeck <[email protected]> |
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Description |
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----------- |
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This driver supports hardware monitoring for Analog Devices ADM1075, ADM1272, |
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ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294 Hot-Swap Controller and |
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Digital Power Monitors. |
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ADM1075, ADM1272, ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294 are hot-swap |
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controllers that allow a circuit board to be removed from or inserted into |
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a live backplane. They also feature current and voltage readback via an |
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integrated 12 bit analog-to-digital converter (ADC), accessed using a |
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PMBus interface. |
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The driver is a client driver to the core PMBus driver. Please see |
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Documentation/hwmon/pmbus.rst for details on PMBus client drivers. |
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Usage Notes |
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----------- |
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This driver does not auto-detect devices. You will have to instantiate the |
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devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for |
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details. |
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The ADM1075, unlike many other PMBus devices, does not support internal voltage |
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or current scaling. Reported voltages, currents, and power are raw measurements, |
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and will typically have to be scaled. |
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The shunt value in micro-ohms can be set via device tree at compile-time. Please |
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refer to the Documentation/devicetree/bindings/hwmon/adi,adm1275.yaml for bindings |
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if the device tree is used. |
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Platform data support |
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--------------------- |
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The driver supports standard PMBus driver platform data. Please see |
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Documentation/hwmon/pmbus.rst for details. |
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Sysfs entries |
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------------- |
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The following attributes are supported. Limits are read-write, history reset |
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attributes are write-only, all other attributes are read-only. |
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======================= ======================================================= |
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inX_label "vin1" or "vout1" depending on chip variant and |
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configuration. On ADM1075, ADM1293, and ADM1294, |
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vout1 reports the voltage on the VAUX pin. |
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inX_input Measured voltage. |
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inX_min Minimum Voltage. |
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inX_max Maximum voltage. |
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inX_min_alarm Voltage low alarm. |
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inX_max_alarm Voltage high alarm. |
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inX_highest Historical maximum voltage. |
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inX_reset_history Write any value to reset history. |
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curr1_label "iout1" |
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curr1_input Measured current. |
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curr1_max Maximum current. |
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curr1_max_alarm Current high alarm. |
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curr1_lcrit Critical minimum current. Depending on the chip |
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configuration, either curr1_lcrit or curr1_crit is |
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supported, but not both. |
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curr1_lcrit_alarm Critical current low alarm. |
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curr1_crit Critical maximum current. Depending on the chip |
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configuration, either curr1_lcrit or curr1_crit is |
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supported, but not both. |
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curr1_crit_alarm Critical current high alarm. |
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curr1_highest Historical maximum current. |
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curr1_reset_history Write any value to reset history. |
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power1_label "pin1" |
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power1_input Input power. |
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power1_input_lowest Lowest observed input power. ADM1293 and ADM1294 only. |
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power1_input_highest Highest observed input power. |
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power1_reset_history Write any value to reset history. |
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Power attributes are supported on ADM1075, ADM1272, |
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ADM1276, ADM1293, and ADM1294. |
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temp1_input Chip temperature. |
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temp1_max Maximum chip temperature. |
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temp1_max_alarm Temperature alarm. |
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temp1_crit Critical chip temperature. |
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temp1_crit_alarm Critical temperature high alarm. |
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temp1_highest Highest observed temperature. |
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temp1_reset_history Write any value to reset history. |
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Temperature attributes are supported on ADM1272 and |
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ADM1278. |
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======================= =======================================================
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