CONFIG_CLOCK_SET: Enable setting the CPU clock frequency

General informations

The Linux kernel configuration item CONFIG_CLOCK_SET has multiple definitions:

Enable setting the CPU clock frequency found in arch/m68k/Kconfig.cpu

The configuration item CONFIG_CLOCK_SET:

• prompt: Enable setting the CPU clock frequency
• type: bool
• depends on: CONFIG_COLDFIRE
• defined in arch/m68k/Kconfig.cpu
• found in Linux kernels: 3.2–3.19, 4.0–4.1

Help text

On some CPU's you do not need to know what the core CPU clock frequency is. On these you can disable clock setting. On some traditional 68K parts, and on all ColdFire parts you need to set the appropriate CPU clock frequency. On these devices many of the onboard peripherals derive their timing from the master CPU clock frequency.

Enable setting the CPU clock frequency found in arch/m68k/Kconfig.nommu

The configuration item CONFIG_CLOCK_SET:

• prompt: Enable setting the CPU clock frequency
• type: bool
• depends on: (none)
• defined in arch/m68k/Kconfig.nommu
• found in Linux kernels: 2.6.39, 3.0–3.1

Help text

On some CPU's you do not need to know what the core CPU clock frequency is. On these you can disable clock setting. On some traditional 68K parts, and on all ColdFire parts you need to set the appropriate CPU clock frequency. On these devices many of the onboard peripherals derive their timing from the master CPU clock frequency.

Enable setting the CPU clock frequency found in arch/m68knommu/Kconfig

The configuration item CONFIG_CLOCK_SET:

• prompt: Enable setting the CPU clock frequency
• type: bool
• depends on: (none)
• defined in arch/m68knommu/Kconfig
• found in Linux kernels: 2.6.18–2.6.38

Help text

On some CPU's you do not need to know what the core CPU clock frequency is. On these you can disable clock setting. On some traditional 68K parts, and on all ColdFire parts you need to set the appropriate CPU clock frequency. On these devices many of the onboard peripherals derive their timing from the master CPU clock frequency.

Hardware

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Sources

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The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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