Broadcom NSP GPIO (with PINCONF) driver

modulename: pinctrl-nsp-gpio.ko

configname: CONFIG_PINCTRL_NSP_GPIO

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>Broadcom NSP GPIO (with PINCONF) driver
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Say yes here to enable the Broadcom NSP GPIO driver.

The Broadcom Northstar Plus SoC ChipcommonA GPIO controller is
supported by this driver.

The ChipcommonA GPIO controller support basic PINCONF functions such
as bias pull up, pull down, and drive strength configurations, when
these pins are muxed to GPIO.

source code: