my last t9 dtb was still missing some changes: the voltage regulator setup seems to be quite different between the evb and the t9 / h96max+ which also affected the cpu powering and as a result the voltage and frequency scaling was still not fully working and the box was only running at about 600mhz cpu clock max most of the time ... i have now reworked the t9 dtb even more - again based on the t9-andoid dtb - and cleaned up the regulator setup completely as i think ... now frequency scaling work