Hi Minas, in linux-next-20180327 i will get the following confusing warnings on the Raspberry Pi: Linux raspberrypi 4.16.0-rc7-next-20180327+ #2 SMP PREEMPT Sat Mar 31 13:24:47 CEST 2018 armv6l GNU/Linux [ 6.809185] dwc2 20980000.usb: dwc2_check_params: Invalid parameter lpm=1 [ 6.816741] dwc2 20980000.usb: dwc2_check_params: Invalid parameter lpm_clock_gating=1 [ 6.825852] dwc2 20980000.usb: dwc2_check_params: Invalid parameter besl=1 [ 6.833836] dwc2 20980000.usb: dwc2_check_params: Invalid parameter hird_threshold_en=1 I think the reason is that these features aren't supported. DWC2 core: 2.80a Extract of the BCM2835 datasheet: LPM Mode of Operation: 0 (Non-LPM-capable core) Enable Power Optimization: No I hope we can suppress these confusing warnings. Best regards Stefan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html