Re: power management problems in ehci-omap

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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?

Michael

>> Michael
>>
>> > System was
>> > GTA04A5 (with dm3730 processor and usb3322 phy)
>> >
>> > I know it has worked once, but I do not remember the version.
>> >
>> > The kernel config used can be found here:
>> > http://misc.andi.de1.cc/config-4.15.gz
>> >
> Regards,
> Andreas



-- 
| Michael Nazzareno Trimarchi                     Amarula Solutions BV |
| COO  -  Founder                                      Cruquiuskade 47 |
| +31(0)851119172                                 Amsterdam 1018 AM NL |
|                  [`as] http://www.amarulasolutions.com               |
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