What Lopper Generates from Libmetal YAML - What Lopper Generates from Libmetal YAML - 2026.1 English - UG1186

When Lopper processes the OpenAMP overlay YAML, it generates device tree content for both Linux and the remote OS.

For the Linux device tree, Lopper generates the following content:

• /reserved-memory nodes for all shared regions, including ddrboot, rsctbl, vdev0vring0, vdev0vring1, and vdev0buffer
• IPI mailbox controller and child channel nodes under /axi
• A remoteproc node with memory-region, sram, mboxes, and mbox-names properties
• TCM nodes with sram phandle references

For the Zephyr or remote device tree, when you use -- openamp <cpu> zephyr_dt, Lopper generates the following content:

• /reserved-memory with ddrboot as mmio-sram and ipc as combined vrings-and-buffer mmio-sram
• An IPI mailbox node with Zephyr-compatible bindings, such as xlnx,mbox-versal-ipi-mailbox
• Either an mbox-consumer node or an mbox_ipi_* node, depending on the Lopper version
• A chosen node with zephyr,sram, zephyr,ipc_shm, and zephyr,ipc properties.