CONFIG_SYS_CLOCK_EXISTS

System clock exists and is enabled

Type: bool

Help

This option specifies that the kernel lacks timer support.
Some device configurations can eliminate significant code if
this is disabled.  Obviously timeout-related APIs will not
work.

Default

• y

Kconfig definition

At <Zephyr Kernel>/Kconfig:596

Included via Kconfig:8 → Kconfig.zephyr:40

Menu path: (Top) → General Kernel Options

config SYS_CLOCK_EXISTS
    bool "System clock exists and is enabled"
    default y
    help
      This option specifies that the kernel lacks timer support.
      Some device configurations can eliminate significant code if
      this is disabled.  Obviously timeout-related APIs will not
      work.

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