Mellanox BlueField 2 SoC GPIO

modulename: gpio-mlxbf2.ko

configname: CONFIG_GPIO_MLXBF2

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>PCI support
└─>PCI GPIO expanders
└─>Mellanox BlueField 2 SoC GPIO
In linux kernel since version 5.1 (release Date: 2019-05-05)  
Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.

source code:
drivers/gpio/gpio-mlxbf2.c