Controlling GPIO Inputs and Outputs in Zynq-7000 Linux Kernel Modules
Kernel Space GPIO ManipulationFor the FMQL45T900 platform based on the Zynq-7000 architecture, controlling pins from the kernel space requires determining the correct GPIO index. When utilizing EMIO5 exported from Vivado, the corresponding system GPIO number calculates to 431. The device tree mapping for this pin appears as <&portc 5 0x0 ...
Posted on Wed, 09 Sep 2026 16:05:36 +0000 by Bike Racer
Configuring GPIO Interrupt Input in Linux for Zynq-7000 and FMQL45T900 Platforms
The example presented here demonstrates how to configure an interrupt-based GPIO enput within the Linux kernel driver for FMQL45T900, which shares similarities with Zynq-7000 platforms.
To begin, determine the correct GPIO number corresponding to the physical pin. For instance, EMIO5 maps to GPIO number 431 on the FMQL45T900 platform. In Vivado ...
Posted on Thu, 13 Aug 2026 16:38:18 +0000 by mkohan