CONFIG_OMAP_SMARTREFLEX is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_OMAP_SMARTREFLEX.
Result is shown for kernelversion 6.2.5

SmartReflex support

modulename: sr_device.ko


Linux Kernel Configuration
└─>TI OMAP Common Features
└─>SmartReflex support
In linux kernel since version 2.6.38 (release Date: 2011-03-14)  
Say Y if you want to enable SmartReflex.

SmartReflex can perform continuous dynamic voltage
scaling around the nominal operating point voltage
according to silicon characteristics and operating
conditions. Enabling SmartReflex reduces power

Please note, that by default SmartReflex is only
initialized. To enable the automatic voltage
compensation for vdd mpu and vdd core from user space,
user must write 1 to
where X is mpu or core for OMAP3.
Optionally autocompensation can be enabled in the kernel
by default during system init via the enable_on_init flag
which an be passed as platform data to the smartreflex driver.

source code: