Recently, Linux 5.4 has been released.
However, DFS(Dynamic Frequency Scaling) for A8K is not enabled yet.
Furthermore, it can’t be enabled by menuconfig.
This is the patch to enable DFS for A8K.
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index c9a867ac3..b13d0fbc1 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -83,6 +83,7 @@ CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
CONFIG_CPUFREQ_DT=y
CONFIG_ACPI_CPPC_CPUFREQ=m
CONFIG_ARM_ARMADA_37XX_CPUFREQ=y
+CONFIG_ARM_ARMADA_8K_CPUFREQ=y
CONFIG_ARM_SCPI_CPUFREQ=y
CONFIG_ARM_IMX_CPUFREQ_DT=m
CONFIG_ARM_RASPBERRYPI_CPUFREQ=m
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index a905796f7..25f11e9ec 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -41,6 +41,7 @@ config ARM_ARMADA_37XX_CPUFREQ
config ARM_ARMADA_8K_CPUFREQ
tristate "Armada 8K CPUFreq driver"
depends on ARCH_MVEBU && CPUFREQ_DT
+ select ARMADA_AP_CPU_CLK
help
This enables the CPUFreq driver support for Marvell
Armada8k SOCs.
.
