Hi, Andreas seems to be travelling back from FOSDEM so I jump in with best of my knowledge. > Am 04.02.2018 um 12:34 schrieb Michael Nazzareno Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx>: > > Hi > > On Sun, Feb 4, 2018 at 12:07 PM, H. Nikolaus Schaller <hns@xxxxxxxxxxxxx> wrote: >> Hi Michael, >> >>> Am 04.02.2018 um 11:55 schrieb Michael Nazzareno Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx>: >>> >>> Hi Andreas >>> >>> On Sun, Feb 4, 2018 at 11:50 AM, Andreas Kemnade <andreas@xxxxxxxxxxxx> wrote: >>>> Hi, >>>> >>>> On Sun, 4 Feb 2018 09:43:45 +0100 >>>> Michael Nazzareno Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx> wrote: >>>> >>>>> Hi Andreas >>>>> >>>>> On Sun, Feb 4, 2018 at 9:38 AM, Andreas Kemnade <andreas@xxxxxxxxxxxx> wrote: >>>>>> On Sun, 4 Feb 2018 00:10:50 +0100 >>>>>> Michael Nazzareno Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx> wrote: >>>>>> >>>>>>> Hi >>>>>>> >>>>>>> On Sun, Feb 4, 2018 at 12:03 AM, Andreas Kemnade <andreas@xxxxxxxxxxxx> wrote: >>>>>>>> Hi, >>>>>>>> >>>>>>>> I booted a 4.15 kernel without udev and loaded modules piece by piece to analyze >>>>>>>> pm problems. modprobe ehci-omap increases current by around 35mA and >>>>>>>> also rmmod ehci-omap does not let it go down at all. >>>>>>>> >>>>>>>> I expect that removing hardware does the same thing >>>>>> nonsense sentence from me, was to tired. I would expect that removing the modules >>>>>> properly powers down the device. >>>>>>>> >>>>>>>> Also suspend current increases by around 15mA if that module is loaded. >>>>>>>> I tested with having everything disabled which is attached to that usb bus. >>>>>>>> >>>>>>> >>>>>>> Do you have an LTE connected to the usb? >>>>>>> >>>>>> Yes, there is a UMTS modem attached, but it was off during the tests. >>>>>> It did not enumerate on the modem. >>>>>> >>>>> >>>>> Just to understand if the suspend current drop was connected to the >>>>> suspend of lte modem on your side. >>>>> So you don't have anything connected on usb bus? >>>>> >>>> Suspend current is increased when the ehci-omap module is loaded >>>> in comparison to the state. I tested with the modem disabled, so there >>>> is nothing on the bus. Increased suspend current is one thing, >>>> current_before_modprobe_ehci_omap != current_after_rmmod_ehci_omap. >>>> >>>> I am testing with init=some_testscript.sh, so no userspace >>>> is doing strange things. No module autoload or something. >>>> >>> >>> How many port are configured and how is the phy part connected to the >>> ehci controller? >>> Can you point me the schematic page? >> >> it is essentially a copy&paste from BeagleBoard XM. >> >> Schematics of the GTA04 are here: >> >> http://projects.goldelico.com/p/gta04-main/downloads/48/ >> >> USB PHY is on page 9. >> > > I see. GPIO174 is controlled by you during boot or connected to the dts? > I don't find in mainline the connection to the physical and it's own > programming. > Can you check if the phy is in reset when module is remove? The reset gpio is defined in the respective board-DTS: https://elixir.free-electrons.com/linux/v4.15/source/arch/arm/boot/dts/omap3-beagle-xm.dts#L88 https://elixir.free-electrons.com/linux/v4.15/source/arch/arm/boot/dts/omap3-gta04.dtsi#L120 BR, Nikolaus -- 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
