I noticed in U-boot the code in https://github.com/u-boot/u-boot/blob/master/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_serdes.c There is a function setup_serdes_volt to set up the serdes which I do not see in Barebox. Why was this not implemented? Are the RCW enough that the code is not needed. Cheers, Renaud