On maandag 19 september 2022 15:55:13 CEST Diederik de Haas wrote: > 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. Right after sending that I found https://wiki.archlinux.org/title/ Lenovo_ThinkPad_X1_Yoga_(Gen_4)#NFC which points to https://github.com/nfc-tools/libnfc/issues/455 and from that it seems highly likely that the chip that is used is a NXP NCP300 and is likely/probably using an I2C interface. In drivers/nfc/nxp-nci/Kconfig there are 2 options: - NFC_NXP_NCI which mentions NPC300 explicitly - NFC_NXP_NCI_I2C which is needed when an I2C interface is used. If you know how to build a Debian kernel, you can add those 2 options and verify whether that indeed makes your NFC device available (and working).
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