Hi Grigor, > Grigor Tovmasyan <[email protected]> hat am 2. April 2018 um > 18:00 geschrieben: > > > Hi Stefan, > > On 4/2/2018 7:47 PM, Stefan Wahren wrote: > > 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. > > Yes. By default LPM feature enabled in dwc2 driver, and if hardware > does not support LPM feature this warning are asserting.
thanks for your fast reply. These warnings aren't acceptable, because users think there is something wrong with the driver. As the driver is able to detect the support of this feature, we can avoid this. Stefan > > > > > 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 [email protected] > > More majordomo info at > > https://urldefense.proofpoint.com/v2/url?u=http-3A__vger.kernel.org_majordomo-2Dinfo.html&d=DwICaQ&c=DPL6_X_6JkXFx7AXWqB0tg&r=K1ULVL1slpLXpMJJlAXSOxws4tRq0IkTBqxDkyW2hUQ&m=p8QSzOQ6Jl5b4edTsdasqPqOC-ZomQDDvkluCvJItpU&s=u8I6yUuioJrmqhLWhxbAkQbxnCvYXqyPqqpZSzxp0UU&e= > > > > Thanks, > Grigor. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
