1. Article purpose[edit source]
This article aims to specify how to use LTDC 3rd Layer controlled by CM33 while displaying standard HMI on Linux side using Cube Firmware examples.
This article also explains how to configure LTDC 3rd layer (Resolution, Window sizing, Opacity), how to make changes in
OPTEE RIF settings from external-dt so that LTDC Layer can be controlled via CM33.
2. Prerequisite[edit source]
To demonstrate the use case, required Hardware and software stack are listed below:
- The STM32MP257x-EV Board Kit (Along with LVDS Full HD display Panel)
- The Cube Firmware Package for SMT32MP25xx