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cpufreq: Add Tegra194 cpufreq driver
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Add support for CPU frequency scaling on Tegra194. The frequency
of each core can be adjusted by writing a clock divisor value to
a MSR on the core. The range of valid divisors is queried from
the BPMP.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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Sumit Gupta authored and Viresh Kumar committed Jul 30, 2020
1 parent 9b25d3f commit df320f8
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7 changes: 7 additions & 0 deletions drivers/cpufreq/Kconfig.arm
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Expand Up @@ -316,6 +316,13 @@ config ARM_TEGRA186_CPUFREQ
help
This adds the CPUFreq driver support for Tegra186 SOCs.

config ARM_TEGRA194_CPUFREQ
tristate "Tegra194 CPUFreq support"
depends on ARCH_TEGRA_194_SOC && TEGRA_BPMP
default y
help
This adds CPU frequency driver support for Tegra194 SOCs.

config ARM_TI_CPUFREQ
bool "Texas Instruments CPUFreq support"
depends on ARCH_OMAP2PLUS
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1 change: 1 addition & 0 deletions drivers/cpufreq/Makefile
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Expand Up @@ -83,6 +83,7 @@ obj-$(CONFIG_ARM_TANGO_CPUFREQ) += tango-cpufreq.o
obj-$(CONFIG_ARM_TEGRA20_CPUFREQ) += tegra20-cpufreq.o
obj-$(CONFIG_ARM_TEGRA124_CPUFREQ) += tegra124-cpufreq.o
obj-$(CONFIG_ARM_TEGRA186_CPUFREQ) += tegra186-cpufreq.o
obj-$(CONFIG_ARM_TEGRA194_CPUFREQ) += tegra194-cpufreq.o
obj-$(CONFIG_ARM_TI_CPUFREQ) += ti-cpufreq.o
obj-$(CONFIG_ARM_VEXPRESS_SPC_CPUFREQ) += vexpress-spc-cpufreq.o

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