This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

CONFIG_ESPI_NPCX

Nuvoton NPCX embedded controller (EC) ESPI driver

Type: bool

Help

Enable support for NPCX ESPI driver. The Intel Enhanced Serial
Peripheral Interface (eSPI) provides a path for migrating host
sub-devices via LPC to a lower pin count, higher bandwidth bus.
So far, this driver supports all of functionalities beside flash
channel support. It will be supported in the future. Please refer
https://www.intel.com/content/www/us/en/support/articles/000020952/
software/chipset-software.html for more detail.

Help

Enable support for NPCX ESPI driver. The Intel Enhanced Serial
Peripheral Interface (eSPI) provides a path for migrating host
sub-devices via LPC to a lower pin count, higher bandwidth bus.
So far, this driver supports all of functionalities beside flash
channel support. It will be supported in the future. Please refer
https://www.intel.com/content/www/us/en/support/articles/000020952/
software/chipset-software.html for more detail.

Help

This option enables the Intel Enhanced Serial Peripheral Interface
(eSPI) for NPCX family of processors.

Direct dependencies

(ESPI && SOC_SERIES_NPCX7) || (ESPI && SOC_SERIES_NPCX9) || (SOC_FAMILY_NPCX && ESPI)

(Includes any dependencies from ifs and menus.)

Defaults

  • y

  • y

Kconfig definitions

At soc/arm/nuvoton_npcx/npcx7/Kconfig.defconfig.series:63

Included via Kconfig:8Kconfig.zephyr:27soc/arm/nuvoton_npcx/Kconfig.defconfig:6

Menu path: (Top)

config ESPI_NPCX
    bool
    default y
    depends on ESPI && SOC_SERIES_NPCX7
    help
      Enable support for NPCX ESPI driver. The Intel Enhanced Serial
      Peripheral Interface (eSPI) provides a path for migrating host
      sub-devices via LPC to a lower pin count, higher bandwidth bus.
      So far, this driver supports all of functionalities beside flash
      channel support. It will be supported in the future. Please refer
      https://www.intel.com/content/www/us/en/support/articles/000020952/
      software/chipset-software.html for more detail.

At soc/arm/nuvoton_npcx/npcx9/Kconfig.defconfig.series:73

Included via Kconfig:8Kconfig.zephyr:27soc/arm/nuvoton_npcx/Kconfig.defconfig:6

Menu path: (Top)

config ESPI_NPCX
    bool
    default y
    depends on ESPI && SOC_SERIES_NPCX9
    help
      Enable support for NPCX ESPI driver. The Intel Enhanced Serial
      Peripheral Interface (eSPI) provides a path for migrating host
      sub-devices via LPC to a lower pin count, higher bandwidth bus.
      So far, this driver supports all of functionalities beside flash
      channel support. It will be supported in the future. Please refer
      https://www.intel.com/content/www/us/en/support/articles/000020952/
      software/chipset-software.html for more detail.

At drivers/espi/Kconfig.npcx:6

Included via Kconfig:8Kconfig.zephyr:40drivers/Kconfig:90drivers/espi/Kconfig:15

Menu path: (Top) → Device Drivers → ESPI Driver

config ESPI_NPCX
    bool "Nuvoton NPCX embedded controller (EC) ESPI driver"
    depends on SOC_FAMILY_NPCX && ESPI
    help
      This option enables the Intel Enhanced Serial Peripheral Interface
      (eSPI) for NPCX family of processors.

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