esp-idf/components/spi_flash/esp32s3/Kconfig.flash_freq

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choice ESPTOOLPY_FLASHFREQ
prompt "Flash SPI speed"
default ESPTOOLPY_FLASHFREQ_80M
config ESPTOOLPY_FLASHFREQ_120M
bool "120 MHz (READ DOCS FIRST)"
depends on (SPI_FLASH_HPM_ON || ESPTOOLPY_OCT_FLASH) && \
(ESPTOOLPY_FLASH_SAMPLE_MODE_STR || IDF_EXPERIMENTAL_FEATURES)
help
- Optional feature for QSPI Flash. Read docs and enable `CONFIG_SPI_FLASH_HPM_ENA` first!
- Flash 120 MHz SDR mode is stable.
- Flash 120 MHz DDR mode is an experimental feature, it works when
the temperature is stable.
Risks:
If your chip powers on at a certain temperature, then after the temperature
increases or decreases by approximately 20 Celsius degrees (depending on the
chip), the program will crash randomly.
config ESPTOOLPY_FLASHFREQ_80M
bool "80 MHz"
config ESPTOOLPY_FLASHFREQ_40M
bool "40 MHz"
config ESPTOOLPY_FLASHFREQ_20M
bool "20 MHz"
endchoice