default or selected kernelversion does not have config value CONFIG_ARM_S3C2440_CPUFREQ.
Result is shown for kernelversion 6.9.9
S3C2440/S3C2442 CPU Frequency scaling support
modulename: s3c2440-cpufreq.ko
configname: CONFIG_ARM_S3C2440_CPUFREQ
Linux Kernel Configuration
└─>Power management and ACPI options
└─>CPU Frequency scaling
└─>S3C2440/S3C2442 CPU Frequency scaling support
In linux kernel since version 3.10 (release Date: 2013-06-30)
CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.