Hi Rob, > Again, we're not going to keep adding properties for every DWC3 variation. If > it is board specific, then yes a property is appropriate. If it is SoC specific, then > imply it from the compatible. > Or in this case, you could possibly add another reg entry. > > Rob > Let me try to understand your concerns. The device-tree property should work for all dwc3 IPs and can be specified by different boards. For a SoC specific, it should use a compatible or registry entry to change it. So you think we can't use a property to specify this offset. Is my understanding correct? If it is right, using property to solve this problem was my mistake. I will think a new method to resolve it.