1.. SPDX-License-Identifier: GPL-2.0 2 3Kernel driver intel-m10-bmc-hwmon 4================================= 5 6Supported chips: 7 8 * Intel MAX 10 BMC for Intel PAC N3000 9 10 Prefix: 'n3000bmc-hwmon' 11 12Author: Xu Yilun <yilun.xu@intel.com> 13 14 15Description 16----------- 17 18This driver adds the temperature, voltage, current and power reading 19support for the Intel MAX 10 Board Management Controller (BMC) chip. 20The BMC chip is integrated in some Intel Programmable Acceleration 21Cards (PAC). It connects to a set of sensor chips to monitor the 22sensor data of different components on the board. The BMC firmware is 23responsible for sensor data sampling and recording in shared 24registers. The host driver reads the sensor data from these shared 25registers and exposes them to users as hwmon interfaces. 26 27The BMC chip is implemented using the Intel MAX 10 CPLD. It could be 28reprogramed to some variants in order to support different Intel 29PACs. The driver is designed to be able to distinguish between the 30variants, but now it only supports the BMC for Intel PAC N3000. 31 32 33Sysfs attributes 34---------------- 35 36The following attributes are supported: 37 38- Intel MAX 10 BMC for Intel PAC N3000: 39 40======================= ======================================================= 41tempX_input Temperature of the component (specified by tempX_label) 42tempX_max Temperature maximum setpoint of the component 43tempX_crit Temperature critical setpoint of the component 44tempX_max_hyst Hysteresis for temperature maximum of the component 45tempX_crit_hyst Hysteresis for temperature critical of the component 46temp1_label "Board Temperature" 47temp2_label "FPGA Die Temperature" 48temp3_label "QSFP0 Temperature" 49temp4_label "QSFP1 Temperature" 50temp5_label "Retimer A Temperature" 51temp6_label "Retimer A SerDes Temperature" 52temp7_label "Retimer B Temperature" 53temp8_label "Retimer B SerDes Temperature" 54 55inX_input Measured voltage of the component (specified by 56 inX_label) 57in0_label "QSFP0 Supply Voltage" 58in1_label "QSFP1 Supply Voltage" 59in2_label "FPGA Core Voltage" 60in3_label "12V Backplane Voltage" 61in4_label "1.2V Voltage" 62in5_label "12V AUX Voltage" 63in6_label "1.8V Voltage" 64in7_label "3.3V Voltage" 65 66currX_input Measured current of the component (specified by 67 currX_label) 68curr1_label "FPGA Core Current" 69curr2_label "12V Backplane Current" 70curr3_label "12V AUX Current" 71 72powerX_input Measured power of the component (specified by 73 powerX_label) 74power1_label "Board Power" 75 76======================= ======================================================= 77 78All the attributes are read-only. 79