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The TC2(i.e. CA15_A7) Versatile Express has external Cortex M3 based power controller which is responsible for CPU DVFS and SPC provides the interface for the same. This patch adds a tiny interface driver to check if OPPs are initialised by SPC platform code and register the arm_big_little cpufreq driver. Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
235 lines
5.7 KiB
Plaintext
235 lines
5.7 KiB
Plaintext
#
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# ARM CPU Frequency scaling drivers
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#
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config ARM_BIG_LITTLE_CPUFREQ
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tristate "Generic ARM big LITTLE CPUfreq driver"
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depends on ARM_CPU_TOPOLOGY && PM_OPP && HAVE_CLK
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help
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This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
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config ARM_DT_BL_CPUFREQ
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tristate "Generic probing via DT for ARM big LITTLE CPUfreq driver"
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depends on ARM_BIG_LITTLE_CPUFREQ && OF
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help
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This enables probing via DT for Generic CPUfreq driver for ARM
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big.LITTLE platform. This gets frequency tables from DT.
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config ARM_EXYNOS_CPUFREQ
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bool
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config ARM_EXYNOS4210_CPUFREQ
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bool "SAMSUNG EXYNOS4210"
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depends on CPU_EXYNOS4210
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default y
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select ARM_EXYNOS_CPUFREQ
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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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If in doubt, say N.
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config ARM_EXYNOS4X12_CPUFREQ
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bool "SAMSUNG EXYNOS4x12"
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depends on (SOC_EXYNOS4212 || SOC_EXYNOS4412)
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default y
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select ARM_EXYNOS_CPUFREQ
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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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If in doubt, say N.
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config ARM_EXYNOS5250_CPUFREQ
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bool "SAMSUNG EXYNOS5250"
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depends on SOC_EXYNOS5250
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default y
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select ARM_EXYNOS_CPUFREQ
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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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If in doubt, say N.
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config ARM_EXYNOS5440_CPUFREQ
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bool "SAMSUNG EXYNOS5440"
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depends on SOC_EXYNOS5440
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depends on HAVE_CLK && PM_OPP && OF
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default y
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help
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This adds the CPUFreq driver for Samsung EXYNOS5440
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SoC. The nature of exynos5440 clock controller is
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different than previous exynos controllers so not using
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the common exynos framework.
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If in doubt, say N.
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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 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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config ARM_IMX6Q_CPUFREQ
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tristate "Freescale i.MX6Q cpufreq support"
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depends on SOC_IMX6Q
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depends on REGULATOR_ANATOP
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help
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This adds cpufreq driver support for Freescale i.MX6Q SOC.
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If in doubt, say N.
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config ARM_INTEGRATOR
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tristate "CPUfreq driver for ARM Integrator CPUs"
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depends on ARCH_INTEGRATOR
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default y
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help
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This enables the CPUfreq driver for ARM Integrator CPUs.
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If in doubt, say Y.
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config ARM_KIRKWOOD_CPUFREQ
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def_bool ARCH_KIRKWOOD && OF
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help
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This adds the CPUFreq driver for Marvell Kirkwood
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SoCs.
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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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config ARM_S3C_CPUFREQ
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bool
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help
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Internal configuration node for common cpufreq on Samsung SoC
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config ARM_S3C24XX_CPUFREQ
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bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
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depends on ARCH_S3C24XX
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select ARM_S3C_CPUFREQ
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help
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This enables the CPUfreq driver for the Samsung S3C24XX family
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of CPUs.
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For details, take a look at <file:Documentation/cpu-freq>.
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If in doubt, say N.
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config ARM_S3C24XX_CPUFREQ_DEBUG
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bool "Debug CPUfreq Samsung driver core"
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depends on ARM_S3C24XX_CPUFREQ
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help
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Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
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config ARM_S3C24XX_CPUFREQ_IODEBUG
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bool "Debug CPUfreq Samsung driver IO timing"
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depends on ARM_S3C24XX_CPUFREQ
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help
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Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
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config ARM_S3C24XX_CPUFREQ_DEBUGFS
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bool "Export debugfs for CPUFreq"
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depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
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help
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Export status information via debugfs.
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config ARM_S3C2410_CPUFREQ
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bool
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depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
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select S3C2410_CPUFREQ_UTILS
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help
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CPU Frequency scaling support for S3C2410
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config ARM_S3C2412_CPUFREQ
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bool
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depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
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default y
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select S3C2412_IOTIMING
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help
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CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
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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"
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depends on ARM_S3C2416_CPUFREQ && REGULATOR
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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_S3C2440_CPUFREQ
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bool "S3C2440/S3C2442 CPU Frequency scaling support"
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depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
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select S3C2410_CPUFREQ_UTILS
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default y
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help
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CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
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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_SA1100_CPUFREQ
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bool
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config ARM_SA1110_CPUFREQ
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bool
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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_TEGRA_CPUFREQ
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bool "TEGRA CPUFreq support"
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depends on ARCH_TEGRA
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default y
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help
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This adds the CPUFreq driver support for TEGRA SOCs.
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config ARM_VEXPRESS_SPC_CPUFREQ
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tristate "Versatile Express SPC based CPUfreq driver"
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select ARM_BIG_LITTLE_CPUFREQ
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depends on ARCH_VEXPRESS_SPC
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help
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This add the CPUfreq driver support for Versatile Express
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big.LITTLE platforms using SPC for power management.
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