Hi Jian-Hong, On Mon, 2019-12-16 at 14:46 +0800, Jian-Hong Pan wrote: > Thanks for your effort! System can have USB with this patch series, if the :) > device tree is modified properly. > Here is the question: Will not the device tree "scb/ranges" in this patch > conflict with commit be8af7a9e3cc ("ARM: dts: bcm2711-rpi-4: Enable GENET > support")? You're right, the patch needs to be refreshed. I'm going to send a v5 of the series factoring out all the log2.h changes, and addressing this. Regards, Nicolas