CONFIG_PINCTRL_SH_FUNC_GPIO (not configurable)
configname: CONFIG_PINCTRL_SH_FUNC_GPIO
Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>Renesas pinctrl drivers
└─>PINCTRL_SH_FUNC_GPIO
In linux kernel since version 4.14.326 (release Date: 2023-09-23)
This enables legacy function GPIOs for SH platforms