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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:50:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:50:03 +0000
commit01a69402cf9d38ff180345d55c2ee51c7e89fbc7 (patch)
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parentAdding upstream version 6.7.12. (diff)
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Adding upstream version 6.8.9.upstream/6.8.9
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+Kernel driver ltc4286
+=====================
+
+Supported chips:
+
+ * Analog Devices LTC4286
+
+ Prefix: 'ltc4286'
+
+ Addresses scanned: -
+
+ Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ltc4286.pdf
+
+ * Analog Devices LTC4287
+
+ Prefix: 'ltc4287'
+
+ Addresses scanned: -
+
+ Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ltc4287.pdf
+
+Author: Delphine CC Chiu <Delphine_CC_Chiu@Wiwynn.com>
+
+
+Description
+-----------
+
+This driver supports hardware monitoring for Analog Devices LTC4286
+and LTC4287 Hot-Swap Controller and Digital Power Monitors.
+
+LTC4286 and LTC4287 are hot-swap controllers that allow a circuit board
+to be removed from or inserted into a live backplane. They also feature
+current and voltage readback via an integrated 12 bit analog-to-digital
+converter (ADC), accessed using a PMBus interface.
+
+The driver is a client driver to the core PMBus driver. Please see
+Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
+
+
+Usage Notes
+-----------
+
+This driver does not auto-detect devices. You will have to instantiate the
+devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
+details.
+
+The shunt value in micro-ohms can be set via device tree at compile-time. Please
+refer to the Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml for bindings
+if the device tree is used.
+
+
+Platform data support
+---------------------
+
+The driver supports standard PMBus driver platform data. Please see
+Documentation/hwmon/pmbus.rst for details.
+
+
+Sysfs entries
+-------------
+
+The following attributes are supported. Limits are read-write, history reset
+attributes are write-only, all other attributes are read-only.
+
+======================= =======================================================
+in1_label "vin"
+in1_input Measured voltage.
+in1_alarm Input voltage alarm.
+in1_min Minimum input voltage.
+in1_max Maximum input voltage.
+
+in2_label "vout1"
+in2_input Measured voltage.
+in2_alarm Output voltage alarm.
+in2_min Minimum output voltage.
+in2_max Maximum output voltage.
+
+curr1_label "iout1"
+curr1_input Measured current.
+curr1_alarm Output current alarm.
+curr1_max Maximum current.
+
+power1_label "pin"
+power1_input Input power.
+power1_alarm Input power alarm.
+power1_max Maximum poewr.
+
+temp1_input Chip temperature.
+temp1_min Minimum chip temperature.
+temp1_max Maximum chip temperature.
+temp1_crit Critical chip temperature.
+temp1_alarm Chip temperature alarm.
+======================= =======================================================