Enable Thermal Drivers in Kernel Configuration

Enable the thermal driver support in the kernel configuration.
  1. Under the root directory of freelight-u-sdk, type the following command to enter the kernel menu configuration GUI.
    cd freelight-u-sdk
make linux-menuconfig
  2. Enter the Device Drivers > Thermal Drivers menu.
  3. In the Thermal Drivers menu, select the CPU Frequency Cooling Device option.
    Figure 1. CPU Frequency Cooling Device
    The following list provides explanations for the parameters included in the above menu.
    • Default Thermal governor (step_wise): Thermal governor select step_wise by default.
    • Expose thermal sensors as hwmon device: Generic Thermal Management hwmon support.
    • APIs to parse thermal data out of device tree: Generic Thermal Management device tree support.
    • Enable writable trip points: Support modifying trip points in user space.
    • Thermal emulation mode support: Support thermal emulation temperature function.
    • Generic cpu cooling support: Open generic CPU cooling.
    • CPU frequency cooling device: Support generic CPU cooling mechanism through frequency reduction.