Renesas RZ/A1 gpio and pinctrl driver

modulename: pinctrl-rza1.ko

configname: CONFIG_PINCTRL_RZA1

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>Device Tree and Open Firmware support
└─>Renesas RZ/A1 gpio and pinctrl driver
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This selects pinctrl driver for Renesas RZ/A1 platforms.

source code: