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- .. 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 <[email protected]>
- 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.
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