Hi Geert, On Tue, May 07, 2019 1, Geert Uytterhoeven wrote: > > So with that said, does a uses-usb-x1 property make more sense? > > No ;-) So.... I guess the first patch in the series needs to add this to the .dtsi: usb_x1_clk: usb_x1 { #clock-cells = <0>; compatible = "fixed-clock"; /* If clk present, value must be set by board */ clock-frequency = <0>; }; Then I can reference "usb_x1" in the driver and see if it is set to non-zero. What do you think? Chris