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Highbank processors depend on the external ECME to perform voltage management based on a requested frequency. Communication between the A9 cores and the ECME happens over the pl320 IPC channel. Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com> Reviewed-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
101 lines
2.3 KiB
Plaintext
101 lines
2.3 KiB
Plaintext
#
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# ARM CPU Frequency scaling drivers
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#
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config ARM_OMAP2PLUS_CPUFREQ
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bool "TI OMAP2+"
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depends on ARCH_OMAP2PLUS
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default ARCH_OMAP2PLUS
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select CPU_FREQ_TABLE
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config ARM_S3C2416_CPUFREQ
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bool "S3C2416 CPU Frequency scaling support"
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depends on CPU_S3C2416
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help
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This adds the CPUFreq driver for the Samsung S3C2416 and
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S3C2450 SoC. The S3C2416 supports changing the rate of the
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armdiv clock source and also entering a so called dynamic
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voltage scaling mode in which it is possible to reduce the
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core voltage of the cpu.
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If in doubt, say N.
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config ARM_S3C2416_CPUFREQ_VCORESCALE
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bool "Allow voltage scaling for S3C2416 arm core (EXPERIMENTAL)"
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depends on ARM_S3C2416_CPUFREQ && REGULATOR && EXPERIMENTAL
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help
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Enable CPU voltage scaling when entering the dvs mode.
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It uses information gathered through existing hardware and
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tests but not documented in any datasheet.
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If in doubt, say N.
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config ARM_S3C64XX_CPUFREQ
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bool "Samsung S3C64XX"
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depends on CPU_S3C6410
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default y
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help
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This adds the CPUFreq driver for Samsung S3C6410 SoC.
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If in doubt, say N.
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config ARM_S5PV210_CPUFREQ
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bool "Samsung S5PV210 and S5PC110"
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depends on CPU_S5PV210
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default y
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help
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This adds the CPUFreq driver for Samsung S5PV210 and
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S5PC110 SoCs.
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If in doubt, say N.
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config ARM_EXYNOS_CPUFREQ
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bool "SAMSUNG EXYNOS SoCs"
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depends on ARCH_EXYNOS
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default y
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help
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This adds the CPUFreq driver common part for Samsung
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EXYNOS SoCs.
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If in doubt, say N.
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config ARM_EXYNOS4210_CPUFREQ
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def_bool CPU_EXYNOS4210
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help
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This adds the CPUFreq driver for Samsung EXYNOS4210
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SoC (S5PV310 or S5PC210).
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config ARM_EXYNOS4X12_CPUFREQ
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def_bool (SOC_EXYNOS4212 || SOC_EXYNOS4412)
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help
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This adds the CPUFreq driver for Samsung EXYNOS4X12
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SoC (EXYNOS4212 or EXYNOS4412).
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config ARM_EXYNOS5250_CPUFREQ
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def_bool SOC_EXYNOS5250
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help
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This adds the CPUFreq driver for Samsung EXYNOS5250
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SoC.
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config ARM_SPEAR_CPUFREQ
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bool "SPEAr CPUFreq support"
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depends on PLAT_SPEAR
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default y
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help
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This adds the CPUFreq driver support for SPEAr SOCs.
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config ARM_HIGHBANK_CPUFREQ
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tristate "Calxeda Highbank-based"
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depends on ARCH_HIGHBANK
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select CPU_FREQ_TABLE
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select GENERIC_CPUFREQ_CPU0
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select PM_OPP
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select REGULATOR
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default m
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help
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This adds the CPUFreq driver for Calxeda Highbank SoC
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based boards.
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If in doubt, say N.
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