Hi Michael,
> Am 04.02.2018 um 11:55 schrieb Michael Nazzareno Trimarchi
> <[email protected]>:
>
> Hi Andreas
>
> On Sun, Feb 4, 2018 at 11:50 AM, Andreas Kemnade <[email protected]> wrote:
>> Hi,
>>
>> On Sun, 4 Feb 2018 09:43:45 +0100
>> Michael Nazzareno Trimarchi <[email protected]> wrote:
>>
>>> Hi Andreas
>>>
>>> On Sun, Feb 4, 2018 at 9:38 AM, Andreas Kemnade <[email protected]>
>>> wrote:
>>>> On Sun, 4 Feb 2018 00:10:50 +0100
>>>> Michael Nazzareno Trimarchi <[email protected]> wrote:
>>>>
>>>>> Hi
>>>>>
>>>>> On Sun, Feb 4, 2018 at 12:03 AM, Andreas Kemnade <[email protected]>
>>>>> 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.
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
> [email protected]
> http://lists.goldelico.com/mailman/listinfo.cgi/letux-kernel
--
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
