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Werner

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Posts posted by Werner

  1. 9 hours ago, C127 said:

    1.  Contribution Process: When my DTS and related changes are more mature, what is the proper procedure to submit them as a contribution to the official Armbian project?

    There are unfortunately no detailed instructions how to add new boards or board families to the build framework yet. This is a very extensive topic. However there are a few existing pull requests that should give clues like https://github.com/armbian/build/pull/7902/files

     

    9 hours ago, C127 said:

    2.  Testing: My build is based on the nightly branch. I am looking for volunteers to help test the image. Is there a specific forum section or process for sharing test images and gathering community feedback?

    No, since it is community supported use Stating section for Rockchip devices in forums.

     

     

    I did a quick check on your work.

    - dts files which aren't upstreamed (yet) shall be added in full into the dt folder of the equivalent kernel patch directory (patch/kernel/archive/rockchip64-6.16/dt to say). You can use kernel-dtb build command to extract such a full tree.

    - this also avoids my 2nd concern which is modifying the existing orangepi-5.dtsi and disabling nodes which where later re-added with another patch.

    - if possible try to bump to latest mainline u-boot, so either v2025.04 or wait a bit longer for v2025.07 which is currently RC.

  2. Here are a few generic tips to consider:

    - Going to something industrial grade is always good. mean-well would be entry-level here

    - Phone chargers are not good for powering SBCs. They're designed to handle constant load while SBCs draw is variable depending on load.

    - Usually SBCs prefer slight overvoltage. So it is usually not an issue to feed them with an PSU that outputs 5.1 or 5.2 volts since this compensates for losses across wires, connectors and the PCB anyway.

     

    I personally have a mean well HRP-200-5 which powers all my sbcs but would be way too much for a single one.

    Official chargers from Raspberry or Orangepi would do too since they already come with slight overvoltage by design.

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