CONFIG_APB_TIMER: Intel MID APB Timer Support

General informations

The Linux kernel configuration item CONFIG_APB_TIMER has multiple definitions:

Intel MID APB Timer Support found in arch/x86/Kconfig

The configuration item CONFIG_APB_TIMER:

• prompt: Intel MID APB Timer Support
• type: bool
• depends on: ( CONFIG_X86_INTEL_MID ) && ( CONFIG_X86_INTEL_MID ) && ( CONFIG_X86_INTEL_MID && CONFIG_SFI )
• defined in arch/x86/Kconfig
• found in Linux kernels: 3.3–3.19, 4.0–4.20, 5.0–5.11

Help text

APB timer is the replacement for 8254, HPET on X86 MID platforms. The APBT provides a stable time base on SMP systems, unlike the TSC, but it is more expensive to access, as it is off-chip. APB timers are always running regardless of CPU C states, they are used as per CPU clockevent device when possible.

Langwell APB Timer Support found in arch/x86/Kconfig

The configuration item CONFIG_APB_TIMER:

• prompt: Langwell APB Timer Support
• type: bool
• depends on: ( CONFIG_MRST ) && ( CONFIG_X86_MRST )
• defined in arch/x86/Kconfig
• found in Linux kernels: 2.6.34–2.6.39, 3.0–3.2

Help text

APB timer is the replacement for 8254, HPET on X86 MID platforms. The APBT provides a stable time base on SMP systems, unlike the TSC, but it is more expensive to access, as it is off-chip. APB timers are always running regardless of CPU C states, they are used as per CPU clockevent device when possible.

Hardware

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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