One-register-per-pin type device tree based pinctrl driver

modulename: pinctrl-single.ko

configname: CONFIG_PINCTRL_SINGLE

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>One-register-per-pin type device tree based pinctrl driver
In linux kernel since version 3.1 (release Date: 2011-10-24)  
This selects the device tree based generic pinctrl driver.

source code: