Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/src/commit/a4bdf1def41a75a8e5a9203d0ad39f0120f8a583/doc/device-tree-bindings/net You should set ROOT_URL correctly, otherwise the web may not work correctly.

upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support

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allwinner,sun4i-emac.txt	…
allwinner,sun4i-mdio.txt	…
allwinner,sun7i-a20-gmac.txt	…
ethernet.txt	…
stmmac.txt	…