Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/src/commit/33cf727b1634dbd9cd68a6ebc444a88f053822d7/include/dt-bindings/gpio 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
 
 
 
 
 
 
u-boot/include/dt-bindings/gpio
Simon Glass b24f5c4f27 x86: broadwell: Add a pinctrl driver 9 years ago
..
gpio.h
tegra-gpio.h
x86-gpio.h