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| author | Alexandru Tachici <alexandru.tachici@analog.com> | 2020-12-03 09:11:53 +0200 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2020-12-11 07:42:27 -0800 |
| commit | b0bd407e94b036d597c6060d64c22094ff85b13c (patch) | |
| tree | de01fdcd2e902bd3c72dc50975c75f955110fee5 /Documentation/hwmon | |
| parent | d014538aa38561cd24c5eb228223585f26c5ec71 (diff) | |
| download | linux-b0bd407e94b036d597c6060d64c22094ff85b13c.tar.gz linux-b0bd407e94b036d597c6060d64c22094ff85b13c.tar.xz | |
hwmon: (ltc2992) Add support
LTC2992 is a rail-to-rail system monitor that
measures current, voltage, and power of two supplies.
Two ADCs simultaneously measure each supply’s current.
A third ADC monitors the input voltages and four
auxiliary external voltages.
Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/index.rst | 1 | ||||
| -rw-r--r-- | Documentation/hwmon/ltc2992.rst | 56 |
2 files changed, 57 insertions, 0 deletions
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index f1205c64423d..7e5104c8f477 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -101,6 +101,7 @@ Hardware Monitoring Kernel Drivers lm95234 lm95245 lochnagar + ltc2992 ltc2945 ltc2947 ltc2978 diff --git a/Documentation/hwmon/ltc2992.rst b/Documentation/hwmon/ltc2992.rst new file mode 100644 index 000000000000..46aa1aa84a1a --- /dev/null +++ b/Documentation/hwmon/ltc2992.rst @@ -0,0 +1,56 @@ +.. SPDX-License-Identifier: GPL-2.0 + +Kernel driver ltc2992 +===================== + +Supported chips: + * Linear Technology LTC2992 + Prefix: 'ltc2992' + Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ltc2992.pdf + +Author: Alexandru Tachici <alexandru.tachici@analog.com> + + +Description +----------- + +This driver supports hardware monitoring for Linear Technology LTC2992 power monitor. + +LTC2992 is a rail-to-rail system monitor that measures current, +voltage, and power of two supplies. + +Two ADCs simultaneously measure each supply’s current. A third ADC monitors +the input voltages and four auxiliary external voltages. + + +Sysfs entries +------------- + +The following attributes are supported. Limits are read-write, +all other attributes are read-only. + +in_reset_history Reset all highest/lowest values. + +inX_input Measured voltage. +inX_lowest Minimum measured voltage. +inX_highest Maximum measured voltage. +inX_min Minimum voltage allowed. +inX_max Maximum voltage allowed. +inX_min_alarm An undervoltage occurred. Cleared on read. +inX_max_alarm An overvoltage occurred. Cleared on read. + +currX_input Measured current. +currX_lowest Minimum measured current. +currX_highest Maximum measured current. +currX_min Minimum current allowed. +currX_max Maximum current allowed. +currX_min_alarm An undercurrent occurred. Cleared on read. +currX_max_alarm An overcurrent occurred. Cleared on read. + +powerX_input Measured power. +powerX_input_lowest Minimum measured voltage. +powerX_input_highest Maximum measured voltage. +powerX_min Minimum power. +powerX_max Maximum power. +powerX_min_alarm An underpower occurred. Cleared on read. +powerX_max_alarm An overpower occurred. Cleared on read. |