1 .. SPDX-License-Identifier: GPL-2.0 2 3 Kernel driver ltc2992 4 ===================== 5 6 Supported chips: 7 * Linear Technology LTC2992 8 Prefix: 'ltc2992' 9 Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ltc2992.pdf 10 11 Author: Alexandru Tachici <alexandru.tachici@analog.com> 12 13 14 Description 15 ----------- 16 17 This driver supports hardware monitoring for Linear Technology LTC2992 power monitor. 18 19 LTC2992 is a rail-to-rail system monitor that measures current, 20 voltage, and power of two supplies. 21 22 Two ADCs simultaneously measure each supply's current. A third ADC monitors 23 the input voltages and four auxiliary external voltages. 24 25 26 Sysfs entries 27 ------------- 28 29 The following attributes are supported. Limits are read-write, 30 all other attributes are read-only. 31 32 in_reset_history Reset all highest/lowest values. 33 34 inX_input Measured voltage. 35 inX_lowest Minimum measured voltage. 36 inX_highest Maximum measured voltage. 37 inX_min Minimum voltage allowed. 38 inX_max Maximum voltage allowed. 39 inX_min_alarm An undervoltage occurred. Cleared on read. 40 inX_max_alarm An overvoltage occurred. Cleared on read. 41 42 currX_input Measured current. 43 currX_lowest Minimum measured current. 44 currX_highest Maximum measured current. 45 currX_min Minimum current allowed. 46 currX_max Maximum current allowed. 47 currX_min_alarm An undercurrent occurred. Cleared on read. 48 currX_max_alarm An overcurrent occurred. Cleared on read. 49 50 powerX_input Measured power. 51 powerX_input_lowest Minimum measured voltage. 52 powerX_input_highest Maximum measured voltage. 53 powerX_min Minimum power. 54 powerX_max Maximum power. 55 powerX_min_alarm An underpower occurred. Cleared on read. 56 powerX_max_alarm An overpower occurred. Cleared on read.
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