https://embeddedlinux.blog/en/series/yocto-stm32mp1/Recent content in Yocto-STM32MP1 on Embedded Linux BlogHugoenFri, 12 Dec 2025 09:26:26 +0700https://embeddedlinux.blog/en/2025/12/13/yocto-stm32mp1-2-tao-patch-device-tree-kernel-mo-i2c/Sat, 13 Dec 2025 07:18:00 +0700https://embeddedlinux.blog/en/2025/12/13/yocto-stm32mp1-2-tao-patch-device-tree-kernel-mo-i2c/<p>In this post I show you how to create a kernel device tree patch to enable i2c5 on the board</p> <h2 id="1-documents-and-hardware">1. Documents and hardware</h2> <p>Read the vendor's <a href="https://www.st.com/resource/en/user_manual/um2534-discovery-kits-with-stm32mp157-mpus-stmicroelectronics.pdf" target="_blank" rel="noopener">User Manual</a> ; page 8 has the Hardware block diagram, showing the connections currently routed out from the chip</p>https://embeddedlinux.blog/en/2025/12/06/yocto-stm32mp1-1-build-va-flash-core-image-minimal-cho-stm32mp157/Sat, 06 Dec 2025 07:11:00 +0700https://embeddedlinux.blog/en/2025/12/06/yocto-stm32mp1-1-build-va-flash-core-image-minimal-cho-stm32mp157/<h2 id="1-preparing-the-host-machine">1. Preparing the host machine</h2> <p>My machine runs Ubuntu 22.04.5 LTS (Jammy Jellyfish). I installed it dual boot with windows to make the most of the cores</p> <p>Following the <a href="https://docs.yoctoproject.org/2.2.2/ref-manual/ref-manual.html#required-packages-for-the-host-development-system" target="_blank" rel="noopener">Yocto Project Reference Manual</a> , section 1.3.2.1, we install the following packages</p>