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authorLinus Torvalds <torvalds@linux-foundation.org>2020-10-13 10:15:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-13 10:15:31 -0700
commitc4439713e82a0d746e533ae5ddd7dfa832e2a486 (patch)
treeaf1590a67536a4af13b4a94bb672ca98313870e0 /Documentation/hwmon
parent0486beaf88d2460e9dbcbba281dab683a838f0c6 (diff)
parent9b20aec24b8ab2860ea41182ba554dfcc444c0c8 (diff)
downloadlinux-c4439713e82a0d746e533ae5ddd7dfa832e2a486.tar.bz2
Merge tag 'hwmon-for-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck: "New driver and chip support: - Moortec MR75203 PVT controller - MPS Multi-phase mp2975 controller - ADM1266 - Zen3 CPUs - Intel MAX 10 BMC Enhancements: - Support for rated attributes in hwmon core - MAX20730: - Device monitoring via debugfs - VOUT readin adjustment vie devicetree bindings - LM75: - Devicetree support - Regulator support - Improved accumulationm logic in amd_energy driver - Added fan sensor to gsc-hwmon driver - Support for simplified I2C probing Various other minor fixes and improvements" * tag 'hwmon-for-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (64 commits) hwmon: (pmbus/max20730) adjust the vout reading given voltage divider dt-bindings: hwmon: max20730: adding device tree doc for max20730 hwmon: Add hardware monitoring driver for Moortec MR75203 PVT controller hwmon: Add DT bindings schema for PVT controller dt-bindings: hwmon: Add the +vs supply to the lm75 bindings dt-bindings: hwmon: Convert lm75 bindings to yaml docs: hwmon: (ltc2945) update datasheet link hwmon: (mlxreg-fan) Fix double "Mellanox" hwmon: (pmbus/max20730) add device monitoring via debugfs hwmon: (pmbus/max34440) Fix OC fault limits hwmon: (bt1-pvt) Wait for the completion with timeout hwmon: (bt1-pvt) Cache current update timeout hwmon: (bt1-pvt) Test sensor power supply on probe hwmon: (lm75) Add regulator support hwmon: Add hwmon driver for Intel MAX 10 BMC dt-bindings: Add MP2975 voltage regulator device hwmon: (pmbus) Add support for MPS Multi-phase mp2975 controller hwmon: (tmp513) fix spelling typo in comments hwmon: (amd_energy) Update driver documentation hwmon: (amd_energy) Improve the accumulation logic ...
Diffstat (limited to 'Documentation/hwmon')
-rw-r--r--Documentation/hwmon/adm1266.rst37
-rw-r--r--Documentation/hwmon/amd_energy.rst5
-rw-r--r--Documentation/hwmon/drivetemp.rst18
-rw-r--r--Documentation/hwmon/index.rst2
-rw-r--r--Documentation/hwmon/intel-m10-bmc-hwmon.rst78
-rw-r--r--Documentation/hwmon/ltc2945.rst2
-rw-r--r--Documentation/hwmon/mp2975.rst116
-rw-r--r--Documentation/hwmon/pmbus-core.rst3
-rw-r--r--Documentation/hwmon/pmbus.rst22
-rw-r--r--Documentation/hwmon/sysfs-interface.rst70
10 files changed, 345 insertions, 8 deletions
diff --git a/Documentation/hwmon/adm1266.rst b/Documentation/hwmon/adm1266.rst
new file mode 100644
index 000000000000..9257f8a48650
--- /dev/null
+++ b/Documentation/hwmon/adm1266.rst
@@ -0,0 +1,37 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Kernel driver adm1266
+=====================
+
+Supported chips:
+ * Analog Devices ADM1266
+ Prefix: 'adm1266'
+ Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADM1266.pdf
+
+Author: Alexandru Tachici <alexandru.tachici@analog.com>
+
+
+Description
+-----------
+
+This driver supports hardware monitoring for Analog Devices ADM1266 sequencer.
+
+ADM1266 is a sequencer that features voltage readback from 17 channels via an
+integrated 12 bit SAR ADC, accessed using a PMBus interface.
+
+The driver is a client driver to the core PMBus driver. Please see
+Documentation/hwmon/pmbus for details on PMBus client drivers.
+
+
+Sysfs entries
+-------------
+
+The following attributes are supported. Limits are read-write, history reset
+attributes are write-only, all other attributes are read-only.
+
+inX_label "voutx"
+inX_input Measured voltage.
+inX_min Minimum Voltage.
+inX_max Maximum voltage.
+inX_min_alarm Voltage low alarm.
+inX_max_alarm Voltage high alarm.
diff --git a/Documentation/hwmon/amd_energy.rst b/Documentation/hwmon/amd_energy.rst
index f8288edff664..86e4ebc5cbc2 100644
--- a/Documentation/hwmon/amd_energy.rst
+++ b/Documentation/hwmon/amd_energy.rst
@@ -84,6 +84,11 @@ per run to a respective 64-bit counter. The kernel thread starts
running during probe, wakes up every 100secs and stops running
when driver is removed.
+Frequency of the accumulator thread is set during the probe
+based on the chosen energy unit resolution. For example
+A. fine grain (1.625 micro J)
+B. course grain (0.125 milli J)
+
A socket and core energy read would return the current register
value added to the respective energy accumulator.
diff --git a/Documentation/hwmon/drivetemp.rst b/Documentation/hwmon/drivetemp.rst
index 2d37d049247f..0b1cf2f912c5 100644
--- a/Documentation/hwmon/drivetemp.rst
+++ b/Documentation/hwmon/drivetemp.rst
@@ -30,6 +30,24 @@ Transport is not supported, the driver uses SMART attributes to read
the drive temperature.
+Usage Note
+----------
+
+Reading the drive temperature may reset the spin down timer on some drives.
+This has been observed with WD120EFAX drives, but may be seen with other
+drives as well. The same behavior is observed if the 'hdtemp' or 'smartd'
+tools are used to access the drive.
+With the WD120EFAX drive, reading the drive temperature using the drivetemp
+driver is still possible _after_ it transitioned to standby mode, and
+reading the drive temperature in this mode will not cause the drive to
+change its mode (meaning the drive will not spin up). It is unknown if other
+drives experience similar behavior.
+
+A known workaround for WD120EFAX drives is to read the drive temperature at
+intervals larger than twice the spin-down time. Otherwise affected drives
+will never spin down.
+
+
Sysfs entries
-------------
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index 77a1ae975037..4bcb1a75fd4a 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -30,6 +30,7 @@ Hardware Monitoring Kernel Drivers
adm1026
adm1031
adm1177
+ adm1266
adm1275
adm9240
ads7828
@@ -73,6 +74,7 @@ Hardware Monitoring Kernel Drivers
ina209
ina2xx
ina3221
+ intel-m10-bmc-hwmon
ir35221
ir38064
isl68137
diff --git a/Documentation/hwmon/intel-m10-bmc-hwmon.rst b/Documentation/hwmon/intel-m10-bmc-hwmon.rst
new file mode 100644
index 000000000000..3d148c6e3256
--- /dev/null
+++ b/Documentation/hwmon/intel-m10-bmc-hwmon.rst
@@ -0,0 +1,78 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Kernel driver intel-m10-bmc-hwmon
+=================================
+
+Supported chips:
+
+ * Intel MAX 10 BMC for Intel PAC N3000
+
+ Prefix: 'n3000bmc-hwmon'
+
+Author: Xu Yilun <yilun.xu@intel.com>
+
+
+Description
+-----------
+
+This driver adds the temperature, voltage, current and power reading
+support for the Intel MAX 10 Board Management Controller (BMC) chip.
+The BMC chip is integrated in some Intel Programmable Acceleration
+Cards (PAC). It connects to a set of sensor chips to monitor the
+sensor data of different components on the board. The BMC firmware is
+responsible for sensor data sampling and recording in shared
+registers. The host driver reads the sensor data from these shared
+registers and exposes them to users as hwmon interfaces.
+
+The BMC chip is implemented using the Intel MAX 10 CPLD. It could be
+reprogramed to some variants in order to support different Intel
+PACs. The driver is designed to be able to distinguish between the
+variants, but now it only supports the BMC for Intel PAC N3000.
+
+
+Sysfs attributes
+----------------
+
+The following attributes are supported:
+
+- Intel MAX 10 BMC for Intel PAC N3000:
+
+======================= =======================================================
+tempX_input Temperature of the component (specified by tempX_label)
+tempX_max Temperature maximum setpoint of the component
+tempX_crit Temperature critical setpoint of the component
+tempX_max_hyst Hysteresis for temperature maximum of the component
+tempX_crit_hyst Hysteresis for temperature critical of the component
+temp1_label "Board Temperature"
+temp2_label "FPGA Die Temperature"
+temp3_label "QSFP0 Temperature"
+temp4_label "QSFP1 Temperature"
+temp5_label "Retimer A Temperature"
+temp6_label "Retimer A SerDes Temperature"
+temp7_label "Retimer B Temperature"
+temp8_label "Retimer B SerDes Temperature"
+
+inX_input Measured voltage of the component (specified by
+ inX_label)
+in0_label "QSFP0 Supply Voltage"
+in1_label "QSFP1 Supply Voltage"
+in2_label "FPGA Core Voltage"
+in3_label "12V Backplane Voltage"
+in4_label "1.2V Voltage"
+in5_label "12V AUX Voltage"
+in6_label "1.8V Voltage"
+in7_label "3.3V Voltage"
+
+currX_input Measured current of the component (specified by
+ currX_label)
+curr1_label "FPGA Core Current"
+curr2_label "12V Backplane Current"
+curr3_label "12V AUX Current"
+
+powerX_input Measured power of the component (specified by
+ powerX_label)
+power1_label "Board Power"
+
+======================= =======================================================
+
+All the attributes are read-only.
diff --git a/Documentation/hwmon/ltc2945.rst b/Documentation/hwmon/ltc2945.rst
index 20c884985367..8d65c141ce2b 100644
--- a/Documentation/hwmon/ltc2945.rst
+++ b/Documentation/hwmon/ltc2945.rst
@@ -11,7 +11,7 @@ Supported chips:
Datasheet:
- http://cds.linear.com/docs/en/datasheet/2945fa.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/2945fb.pdf
Author: Guenter Roeck <linux@roeck-us.net>
diff --git a/Documentation/hwmon/mp2975.rst b/Documentation/hwmon/mp2975.rst
new file mode 100644
index 000000000000..5b0609c62f48
--- /dev/null
+++ b/Documentation/hwmon/mp2975.rst
@@ -0,0 +1,116 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Kernel driver mp2975
+====================
+
+Supported chips:
+
+ * MPS MP12254
+
+ Prefix: 'mp2975'
+
+Author:
+
+ Vadim Pasternak <vadimp@nvidia.com>
+
+Description
+-----------
+
+This driver implements support for Monolithic Power Systems, Inc. (MPS)
+vendor dual-loop, digital, multi-phase controller MP2975.
+
+This device:
+- Supports up to two power rail.
+- Provides 8 pulse-width modulations (PWMs), and can be configured up
+ to 8-phase operation for rail 1 and up to 4-phase operation for rail
+ 2.
+- Supports two pages 0 and 1 for telemetry and also pages 2 and 3 for
+ configuration.
+- Can configured VOUT readout in direct or VID format and allows
+ setting of different formats on rails 1 and 2. For VID the following
+ protocols are available: VR13 mode with 5-mV DAC; VR13 mode with
+ 10-mV DAC, IMVP9 mode with 5-mV DAC.
+
+Device supports:
+- SVID interface.
+- AVSBus interface.
+
+Device complaint with:
+- PMBus rev 1.3 interface.
+
+Device supports direct format for reading output current, output voltage,
+input and output power and temperature.
+Device supports linear format for reading input voltage and input power.
+Device supports VID and direct formats for reading output voltage.
+The below VID modes are supported: VR12, VR13, IMVP9.
+
+The driver provides the next attributes for the current:
+- for current in: input, maximum alarm;
+- for current out input, maximum alarm and highest values;
+- for phase current: input and label.
+attributes.
+The driver exports the following attributes via the 'sysfs' files, where
+- 'n' is number of telemetry pages (from 1 to 2);
+- 'k' is number of configured phases (from 1 to 8);
+- indexes 1, 1*n for "iin";
+- indexes n+1, n+2 for "iout";
+- indexes 2*n+1 ... 2*n + k for phases.
+
+**curr[1-{2n}]_alarm**
+
+**curr[{n+1}-{n+2}]_highest**
+
+**curr[1-{2n+k}]_input**
+
+**curr[1-{2n+k}]_label**
+
+The driver provides the next attributes for the voltage:
+- for voltage in: input, high critical threshold, high critical alarm, all only
+ from page 0;
+- for voltage out: input, low and high critical thresholds, low and high
+ critical alarms, from pages 0 and 1;
+The driver exports the following attributes via the 'sysfs' files, where
+- 'n' is number of telemetry pages (from 1 to 2);
+- indexes 1 for "iin";
+- indexes n+1, n+2 for "vout";
+
+**in[1-{2n+1}]_crit**
+
+**in[1-{2n+1}]_crit_alarm**
+
+**in[1-{2n+1}]_input**
+
+**in[1-{2n+1}]_label**
+
+**in[2-{n+1}]_lcrit**
+
+**in[2-{n+1}1_lcrit_alarm**
+
+The driver provides the next attributes for the power:
+- for power in alarm and input.
+- for power out: highest and input.
+The driver exports the following attributes via the 'sysfs' files, where
+- 'n' is number of telemetry pages (from 1 to 2);
+- indexes 1 for "pin";
+- indexes n+1, n+2 for "pout";
+
+**power1_alarm**
+
+**power[2-{n+1}]_highest**
+
+**power[1-{2n+1}]_input**
+
+**power[1-{2n+1}]_label**
+
+The driver provides the next attributes for the temperature (only from page 0):
+
+
+**temp1_crit**
+
+**temp1_crit_alarm**
+
+**temp1_input**
+
+**temp1_max**
+
+**temp1_max_alarm**
diff --git a/Documentation/hwmon/pmbus-core.rst b/Documentation/hwmon/pmbus-core.rst
index 501b37b0610d..e22c4f6808bc 100644
--- a/Documentation/hwmon/pmbus-core.rst
+++ b/Documentation/hwmon/pmbus-core.rst
@@ -270,8 +270,7 @@ obtain the chip status. Therefore, it must _not_ be called from that function.
::
- int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id,
- struct pmbus_driver_info *info);
+ int pmbus_do_probe(struct i2c_client *client, struct pmbus_driver_info *info);
Execute probe function. Similar to standard probe function for other drivers,
with the pointer to struct pmbus_driver_info as additional argument. Calls
diff --git a/Documentation/hwmon/pmbus.rst b/Documentation/hwmon/pmbus.rst
index 66b3e894612f..fb3ad67dedc1 100644
--- a/Documentation/hwmon/pmbus.rst
+++ b/Documentation/hwmon/pmbus.rst
@@ -143,10 +143,9 @@ Emerson DS1200 power modules might look as follows::
| PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12,
};
- static int ds1200_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+ static int ds1200_probe(struct i2c_client *client)
{
- return pmbus_do_probe(client, id, &ds1200_info);
+ return pmbus_do_probe(client, &ds1200_info);
}
static int ds1200_remove(struct i2c_client *client)
@@ -166,7 +165,7 @@ Emerson DS1200 power modules might look as follows::
.driver = {
.name = "ds1200",
},
- .probe = ds1200_probe,
+ .probe_new = ds1200_probe,
.remove = ds1200_remove,
.id_table = ds1200_id,
};
@@ -211,6 +210,10 @@ inX_lcrit_alarm Voltage critical low alarm.
inX_crit_alarm Voltage critical high alarm.
From VOLTAGE_OV_FAULT status.
inX_label "vin", "vcap", or "voutY"
+inX_rated_min Minimum rated voltage.
+ From MFR_VIN_MIN or MFR_VOUT_MIN register.
+inX_rated_max Maximum rated voltage.
+ From MFR_VIN_MAX or MFR_VOUT_MAX register.
currX_input Measured current. From READ_IIN or READ_IOUT register.
currX_max Maximum current.
@@ -230,6 +233,8 @@ currX_crit_alarm Current critical high alarm.
currX_label "iin", "iinY", "iinY.Z", "ioutY", or "ioutY.Z",
where Y reflects the page number and Z reflects the
phase.
+currX_rated_max Maximum rated current.
+ From MFR_IIN_MAX or MFR_IOUT_MAX register.
powerX_input Measured power. From READ_PIN or READ_POUT register.
powerX_cap Output power cap. From POUT_MAX register.
@@ -244,10 +249,12 @@ powerX_crit_alarm Output power critical high alarm.
powerX_label "pin", "pinY", "pinY.Z", "poutY", or "poutY.Z",
where Y reflects the page number and Z reflects the
phase.
+powerX_rated_max Maximum rated power.
+ From MFR_PIN_MAX or MFR_POUT_MAX register.
tempX_input Measured temperature.
From READ_TEMPERATURE_X register.
-tempX_min Mimimum temperature. From UT_WARN_LIMIT register.
+tempX_min Minimum temperature. From UT_WARN_LIMIT register.
tempX_max Maximum temperature. From OT_WARN_LIMIT register.
tempX_lcrit Critical low temperature.
From UT_FAULT_LIMIT register.
@@ -265,4 +272,9 @@ tempX_lcrit_alarm Chip temperature critical low alarm. Set by comparing
tempX_crit_alarm Chip temperature critical high alarm. Set by comparing
READ_TEMPERATURE_X with OT_FAULT_LIMIT if
TEMP_OT_FAULT status is set.
+tempX_rated_min Minimum rated temperature.
+ From MFR_TAMBIENT_MIN register.
+tempX_rated_max Maximum rated temperature.
+ From MFR_TAMBIENT_MAX, MFR_MAX_TEMP_1, MFR_MAX_TEMP_2 or
+ MFR_MAX_TEMP_3 register.
======================= ========================================================
diff --git a/Documentation/hwmon/sysfs-interface.rst b/Documentation/hwmon/sysfs-interface.rst
index fd590633bb14..678c9c60b5a3 100644
--- a/Documentation/hwmon/sysfs-interface.rst
+++ b/Documentation/hwmon/sysfs-interface.rst
@@ -241,6 +241,20 @@ Voltages
Affects the way the driver calculates the CPU core reference
voltage from the vid pins.
+`in[0-*]_rated_min`
+ Minimum rated voltage.
+
+ Unit: millivolt
+
+ RO
+
+`in[0-*]_rated_max`
+ Maximum rated voltage.
+
+ Unit: millivolt
+
+ RO
+
Also see the Alarms section for status flags associated with voltages.
@@ -574,6 +588,20 @@ Temperatures
RW
+`temp[1-*]_rated_min`
+ Minimum rated temperature.
+
+ Unit: millidegree Celsius
+
+ RO
+
+`temp[1-*]_rated_max`
+ Maximum rated temperature.
+
+ Unit: millidegree Celsius
+
+ RO
+
Some chips measure temperature using external thermistors and an ADC, and
report the temperature measurement as a voltage. Converting this voltage
back to a temperature (or the other way around for limits) requires
@@ -664,6 +692,20 @@ Currents
RW
+`curr[1-*]_rated_min`
+ Minimum rated current.
+
+ Unit: milliampere
+
+ RO
+
+`curr[1-*]_rated_max`
+ Maximum rated current.
+
+ Unit: milliampere
+
+ RO
+
Also see the Alarms section for status flags associated with currents.
*****
@@ -830,6 +872,20 @@ Power
RW
+`power[1-*]_rated_min`
+ Minimum rated power.
+
+ Unit: microWatt
+
+ RO
+
+`power[1-*]_rated_max`
+ Maximum rated power.
+
+ Unit: microWatt
+
+ RO
+
Also see the Alarms section for status flags associated with power readings.
******
@@ -877,6 +933,20 @@ Humidity
RW
+`humidity[1-*]_rated_min`
+ Minimum rated humidity.
+
+ Unit: milli-percent (per cent mille, pcm)
+
+ RO
+
+`humidity[1-*]_rated_max`
+ Maximum rated humidity.
+
+ Unit: milli-percent (per cent mille, pcm)
+
+ RO
+
******
Alarms
******