Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/src/commit/4fcd0b33c7a0db2e86cccdc1831db235a6bc1b2d/drivers/i2c/muxes 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/drivers/i2c/muxes
Michal Simek 0305be1087 Kconfig: i2c: Fix indentation 9 years ago
..
Kconfig Kconfig: i2c: Fix indentation 9 years ago
Makefile
i2c-arb-gpio-challenge.c
i2c-mux-uclass.c