Help¶

The PSRAM CS IO can be any unused GPIO, user can config it based on hardware design. If user use
1.8V flash and 1.8V psram, this value can only be one of 6, 7, 8, 9, 10, 11, 16, 17.

Direct dependencies¶

ESP_SPIRAM && SOC_ESP32 && <choice: SoC/CPU/Configuration Selection>

(Includes any dependencies from ifs and menus.)

Default¶

16

Kconfig definition¶

At <Zephyr>/soc/xtensa/esp32/Kconfig.soc:121

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:28 → <Zephyr>/soc/Kconfig:6 → <BuildDir>/kconfig/Kconfig.soc:1

Menu path: (Top) → SoC/CPU/Configuration Selection → ESP32 → Support for external, SPI-connected RAM → SPI RAM config → PSRAM clock and cs IO for ESP32-DOWD

config D0WD_PSRAM_CS_IO
    int "PSRAM CS IO number"
    range 0 33
    default 16
    depends on ESP_SPIRAM && SOC_ESP32 && <choice>
    help
      The PSRAM CS IO can be any unused GPIO, user can config it based on hardware design. If user use
      1.8V flash and 1.8V psram, this value can only be one of 6, 7, 8, 9, 10, 11, 16, 17.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)