intel-m10-bmc-hwmon.rst 2.9 KB

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