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Bug#1020276: linux-image-5.19.0-1-amd64: NFC device not detected



On 2022-09-19 09:55, Diederik de Haas wrote:
> On maandag 19 september 2022 09:46:41 CEST Oliver Sander wrote:
>> I have a ThinkPad X1 Yoga (4th gen).  It has an NFC device built in.
>> The NFC device appears in the BIOS, and it is enabled there.
>> However, I cannot see it from Debian at all.  Neither lsusb nor
>> lspci show anything ressembling an NFC device.  I would gladly help
>> to debug this, but I don't know what to do in such a situation.
> 
> What is needed is finding out which NFC chip(s/set) is being used in your 
> device. Assuming it is supported on Linux, it could be as simple as enabling a 
> kernel config option.
> 
> I'm guessing the device came initially with Windows and if you still have 
> that, it could be that it can tell you which NFC hardware is being used.
> Another option is asking Lenovo directly.
> 

Yes - this should be a NXP device.

I've attached a guide on how to get it working under Ubuntu (should
apply for Debian too). Not 100% sure if this is correct for the Yoga 4 -
let me know how it works.

We've had barely any interest in getting NFC working (I think this
might be the second question I've had about it in 3 years). I'd love to
know what you're planning on doing with it - in case this should be a
higher priority item to get properly working upstream.

Let me know how it goes

Mark

Attachment: BUILDING NFC DEMO APP (Ubuntu).pdf
Description: Adobe PDF document


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