choice ESP_DEFAULT_CPU_FREQ_MHZ
    prompt "CPU frequency"
    default ESP_DEFAULT_CPU_FREQ_MHZ_32 if IDF_ENV_FPGA
    help
        CPU frequency to be set on application startup.

    config ESP_DEFAULT_CPU_FREQ_MHZ_32
        bool "32 MHz"
        depends on IDF_ENV_FPGA
    config ESP_DEFAULT_CPU_FREQ_MHZ_64
        bool "64 MHz"
endchoice

config ESP_DEFAULT_CPU_FREQ_MHZ
    int
    default 32 if ESP_DEFAULT_CPU_FREQ_MHZ_32
    default 64 if ESP_DEFAULT_CPU_FREQ_MHZ_64