Re: [PATCH v2] arm64: dts: qcom: sdm845-lg: Enable NFC

[Konrad Dybcio]

On 9/6/26 11:32 PM, David Heidelberg wrote:
> On 06/09/2026 23:11, Paul Sajna wrote:
>> Add the i2c and tlmm nodes to support the NXP PN547 NFC chip
>>
>> Downstream dtsi for reference:
>> https://github.com/LineageOS/android_kernel_lge_sdm845/blob/lineage-22.2/arch/arm64/boot/dts/lge/sdm845-judy/sdm845-judyln_lao_com/sdm845-judyln_lao_com-nfc.dtsi
>>
>> Signed-off-by: Paul Sajna <sajattack@xxxxxxxxxxxxxxxx>
>> ---

[...]

>> +    nfc_default: nfc-default-state {
>> +        pins = "gpio12", "gpio62", "gpio63", "gpio116";
> 
> here the verbosity may not be bad (device-tree functions as documentation too)
> gpio116 is associated with eSE NFC part (just guessing, but... it worked before, so), and generally the pn547 doesn't need it at all to work.
> 
> TBH not sure if there or what consensus is here about this. The eSE needs it, but we don't have the driver thus also no integration with NFC part.

The eSE driver would still be acting on the NFC node, right?

Konrad