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? Michael > BR, > Nikolaus > >> >> michael >> >> >>> Regards, >>> Andreas >> >> >> >> -- >> | Michael Nazzareno Trimarchi Amarula Solutions BV | >> | COO - Founder Cruquiuskade 47 | >> | +31(0)851119172 Amsterdam 1018 AM NL | >> | [`as] http://www.amarulasolutions.com | >> _______________________________________________ >> http://projects.goldelico.com/p/gta04-kernel/ >> Letux-kernel mailing list >> Letux-kernel@xxxxxxxxxxxxxxx >> http://lists.goldelico.com/mailman/listinfo.cgi/letux-kernel > -- | Michael Nazzareno Trimarchi Amarula Solutions BV | | COO - Founder Cruquiuskade 47 | | +31(0)851119172 Amsterdam 1018 AM NL | | [`as] http://www.amarulasolutions.com | -- 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
