On Wed, Dec 14, 2022 at 05:22:05PM +0300, Sinan Divarci wrote: > Adding documentation for max31732 quad remote temperature sensor > > Signed-off-by: Sinan Divarci <Sinan.Divarci@xxxxxxxxxx> > --- > Documentation/hwmon/index.rst | 1 + > Documentation/hwmon/max31732.rst | 62 ++++++++++++++++++++++++++++++++ > 2 files changed, 63 insertions(+) > create mode 100644 Documentation/hwmon/max31732.rst > > diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst > index fe2cc6b73..e521bf555 100644 > --- a/Documentation/hwmon/index.rst > +++ b/Documentation/hwmon/index.rst > @@ -133,6 +133,7 @@ Hardware Monitoring Kernel Drivers > max20751 > max31722 > max31730 > + max31732 > max31760 > max31785 > max31790 > diff --git a/Documentation/hwmon/max31732.rst b/Documentation/hwmon/max31732.rst > new file mode 100644 > index 000000000..67bfcf393 > --- /dev/null > +++ b/Documentation/hwmon/max31732.rst > @@ -0,0 +1,62 @@ > +.. SPDX-License-Identifier: GPL-2.0-or-later > + > +Kernel driver max31732 > +====================== > + > +Supported chips: > + > + * Analog Devices MAX31732 > + > + Prefix: 'max31732' > + > + Addresses scanned: none > + > +Author: Sinan Divarci <Sinan.Divarci@xxxxxxxxxx> > + > + > +Description > +----------- > + > +This driver implements support for Maxim MAX31732. > + > +The MAX31732 is a multi-channel temperature sensor that monitors its > +own temperature and the temperatures of up to four external diodeconnected > +transistors. The device operates with 3.0V to 3.6V supply range > +and consume TBDμA of current in standby mode of operation. Resistance TBDμA ? > +cancellation feature compensates for high series resistance between > +circuit-board traces and the external thermal diode, while beta > +compensation corrects for temperature-measurement errors due to lowbeta > +sensing transistors. > + > +The MAX31732 offers two open-drain, active-low alarm outputs, > +ALARM1 and ALARM2. When the measured temperature of a channel > +crosses the respective primary over/under temperature threshold levels > +ALARM1 asserts low and a status bit is set in the corresponding thermal > +status registers. When the measured temperature of a channel crosses the > +secondary over/under temperature threshold levels, ALARM2 asserts low > +and a status bit is set in the corresponding thermal status registers. > + > +Temperature measurement range: from -64°C to 150°C > + > +Temperature Resolution: 12 Bits, ±0.0625°C > + > +Sysfs entries > +------------- > + > +===================== == ======================================================= > +temp[1-5]_enable RW Temperature enable/disable > + Set to 1 to enable channel, 0 to disable > +temp[1-5]_input RO Temperature input > +temp[2-5]_fault RO Fault indicator for remote channels > +temp[1-5]_max RW Temperature max value. Asserts "ALARM1" pin when exceeded > +temp[1-5]_max_alarm RO Temperature max alarm status > +temp[1-5]_crit RW Temperature critical value. Asserts "ALARM2" pin when exceeded > +temp[1-5]_crit_alarm RO Temperature critical alarm status > +temp[1-5]_min RW Temperature min value. Common for all channels. > + Only temp1_min is writeable. Asserts "ALARM1" pin when exceeded > +temp[1-5]_min_alarm RO Temperature min alarm status > +temp[1-5]_lcrit RW Temperature critical low value. Common for all channels. > + Only temp1_min is writeable. Asserts "ALARM2" pin when exceeded > +temp[1-5]_lcrit_alarm RO Temperature critical low alarm status > +temp[2-5]_offset RW Temperature offset for remote channels > +===================== == =======================================================
