Hardware Overview

The Banana Pi M5 centres on Amlogic's S905X3 SoC — four Cortex-A55 cores at up to 2.0 GHz, a Mali-G31 GPU, and an onboard NPU rated at 2.0 TOPS for lightweight inference. It ships with 4 GB LPDDR4 and 16 GB eMMC onboard, eliminating the SD card reliability concerns that plague development with boards that boot exclusively from SD. The 4-port USB 3.0 hub, Gigabit Ethernet, and HDMI 2.1 (4K@60Hz capable) make it genuinely versatile.

BSP and Mainline Kernel Status

This is where the evaluation becomes nuanced. The Banana Pi M5's BSP is based on Amlogic's vendor kernel, which lags the mainline by a significant margin. Mainline kernel support for the S905X3 is improving — thermal, GPIO, eMMC, and Ethernet are well supported — but the NPU and certain multimedia blocks remain vendor-kernel-only. For production embedded Linux deployments, assess whether your use case requires the NPU; if not, a near-mainline kernel is strongly preferable for long-term maintainability.

Check the current upstream status via linux-meson.com, which tracks Amlogic mainlining progress actively.

Yocto and Buildroot Support

The meta-meson layer provides Yocto support for Amlogic targets including the S905X3. It is community-maintained and tracks OpenEmbedded's current release. Building a minimal image for the M5:

git clone https://github.com/superna9999/meta-meson -b scarthgap
# Add to bblayers.conf alongside openembedded-core
MACHINE = "bananapi-m5"

Buildroot support is more mature for straightforward configurations and is a good choice if Yocto's complexity is not justified by your project's scope.

The Onboard NPU: Practical Expectations

Amlogic markets the S905X3's NPU at 2.0 TOPS, but the available toolchain (NNAPI via Android, or the proprietary Amlogic SDK) has significant friction on bare Linux. For TensorFlow Lite or ONNX Runtime inference, the four Cortex-A55 cores — augmented with ARM's Neon SIMD extensions — often deliver comparable throughput for MobileNet-class models without requiring the proprietary NPU toolchain. Test your specific model on both paths before investing in NPU integration.

Comparison Against Raspberry Pi 4

• eMMC storage: M5 wins — onboard eMMC is faster and more reliable than SD-only Pi 4
• CPU performance: Pi 4 (Cortex-A72) outperforms M5 (Cortex-A55) on single-threaded tasks by ~30-40%
• BSP maturity: Pi 4 has significantly better mainline kernel support
• Community and ecosystem: Pi 4 ecosystem is much larger
• Price: Comparable; M5 offers onboard eMMC at similar cost

Recommended Use Cases

The Banana Pi M5 is a solid choice for applications that benefit from onboard eMMC reliability and can tolerate vendor kernel dependencies — IoT gateways, media players, and lightweight edge servers where the Pi's SD-card-first design is a concern. For applications requiring maximum BSP maturity, community support, and software ecosystem breadth, the Raspberry Pi 4 or 5 remains the more practical choice.

Conclusion

The M5 is a capable board with genuinely differentiating hardware features. The BSP maturity gap relative to Raspberry Pi is real and should factor into any production commitment. For development and prototyping, it is a worthwhile addition to your lab. For production, evaluate the kernel support gap against your specific peripheral requirements before committing.