Re: USB-C Devices only show up if connected at boot

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On 26 January 2018 at 06:33, Mika Westerberg
<mika.westerberg@xxxxxxxxxxxxxxx> wrote:
> On Thu, Jan 25, 2018 at 10:20:02PM +0000, Mike Lothian wrote:
>> I've just tried this and the USB-C device was detected :D This is the
>> first time it's ever been detected after boot
>>
>> 02:00.0 PCI bridge: Intel Corporation DSL6340 Thunderbolt 3 Bridge
>> [Alpine Ridge 2C 2015]
>>        Kernel driver in use: pcieport
>> 03:00.0 PCI bridge: Intel Corporation DSL6340 Thunderbolt 3 Bridge
>> [Alpine Ridge 2C 2015]
>>        Kernel driver in use: pcieport
>> 03:01.0 PCI bridge: Intel Corporation DSL6340 Thunderbolt 3 Bridge
>> [Alpine Ridge 2C 2015]
>>        Kernel driver in use: pcieport
>> 03:02.0 PCI bridge: Intel Corporation DSL6340 Thunderbolt 3 Bridge
>> [Alpine Ridge 2C 2015]
>>        Kernel driver in use: pcieport
>> 39:00.0 USB controller: Intel Corporation DSL6340 USB 3.1 Controller
>> [Alpine Ridge]
>>        Subsystem: Device 2222:1111
>>        Kernel driver in use: xhci_hcd
>
> Yes, this is how it should work. All those PCI bridges + xHCI are
> hotplugged when you plug in a USB-C device.
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Whether CONFIG_HOTPLUG_PCI_ACPI=y or CONFIG_HOTPLUG_PCI_ACPI=n the
device doesn't show unless echo 1 > /sys/bus/pci/rescan is issued
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