Mellanox BlueField SoC GPIO

modulename: gpio-mlxbf.ko

configname: CONFIG_GPIO_MLXBF

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>PCI support
└─>PCI GPIO expanders
└─>Mellanox BlueField 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 SoC.

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