From: Florian Eckert <fe@dev.tdt.de>
To: "Enrico Weigelt, metux IT consult" <lkml@metux.net>
Cc: Eckert.Florian@googlemail.com, info@metux.net,
dvhart@infradead.org, andy@infradead.org,
platform-driver-x86@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] platform/x86/pcengines-apuv2: add mpcie reset gpio export
Date: Mon, 15 Jul 2019 16:38:51 +0200 [thread overview]
Message-ID: <10c574cd0dfb1c607536c68fc1c60c06@dev.tdt.de> (raw)
In-Reply-To: <3e98bbd8-c051-4996-fc5a-88a58a2fa2d4@metux.net>
>> On APUx we have also mpcie2/mpcie3 reset pins. To make it possible to
>> reset
>> the ports from the userspace, add the definition to this platform
>> device. The gpio can then be exported by the legancy gpio subsystem to
>> toggle the mpcie reset pin.
>>
>
> Just tested your patch on an apu3. The driver itself seems to work,
> but the pins don't seem to actually do anything.
>
> How exactly did you test it ? Do you have some test case ?
I plugged in a mpcie usb modem.
In my test case it was a EC25 from Quectel in mpcie2 port.
After that I did a reboot and exported the gpio via "/sys/class/gpio"
Then I executed the command "echo 0 > /sys/class/gpio/<name>/value" and
"echo 1 > /sys/class/gpio/<name>/value".
Then I have seen the log message in the kernel that the device did an
unregistration/registration
.
-- Florian
next prev parent reply other threads:[~2019-07-15 14:38 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-04 9:02 [PATCH 0/3] Update pcengines-apuv2 platform device Florian Eckert
2019-07-04 9:02 ` [PATCH 1/3] platform/x86/pcengines-apuv2: add mpcie reset gpio export Florian Eckert
2019-07-08 19:44 ` Enrico Weigelt, metux IT consult
2019-07-10 12:30 ` Florian Eckert
2019-07-15 12:15 ` Enrico Weigelt, metux IT consult
2019-07-15 14:38 ` Florian Eckert [this message]
2019-07-16 18:23 ` Enrico Weigelt, metux IT consult
2019-07-22 11:25 ` Enrico Weigelt, metux IT consult
2019-07-04 9:02 ` [PATCH 2/3] platform/x86/pcengines-apuv2: add legacy leds gpio definitions Florian Eckert
2019-07-08 19:42 ` Enrico Weigelt, metux IT consult
2019-07-10 12:03 ` Florian Eckert
2019-07-10 13:07 ` Enrico Weigelt, metux IT consult
2019-07-04 9:02 ` [PATCH 3/3] platform//x86/pcengines-apuv2: update gpio button definition Florian Eckert
2019-07-08 19:27 ` Enrico Weigelt, metux IT consult
2019-07-22 11:27 ` Enrico Weigelt, metux IT consult
2019-07-23 7:06 ` Florian Eckert
2019-07-23 23:00 ` Enrico Weigelt, metux IT consult
2019-07-04 13:39 ` [PATCH 0/3] Update pcengines-apuv2 platform device Andy Shevchenko
2019-07-04 14:00 ` Florian Eckert
2019-07-04 14:26 ` Andy Shevchenko
2019-07-05 11:36 ` Florian Eckert
2019-07-08 19:39 ` Enrico Weigelt, metux IT consult
2019-07-08 19:45 ` Enrico Weigelt, metux IT consult
2019-07-10 12:54 ` Florian Eckert
2019-07-25 17:49 ` Andy Shevchenko
2019-07-25 19:12 ` Enrico Weigelt, metux IT consult
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