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