| .. 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. |
