Re: [PATCH v5 6/6] arm64: dts: qcom: milos-fairphone-fp6: Add NFC
Konrad Dybcio <[email protected]>
| Newsgroups | gmane.linux.drivers.devicetree,gmane.linux.ports.arm.msm,gmane.linux.kernel,gmane.linux.network |
|---|---|
| Message-ID | <[email protected]> |
On 8/12/26 12:01 AM, Jorijn van der Graaf wrote: > Add the Samsung S3NRN4V NCI NFC controller on i2c1. Its XI clock comes > from the PMK7635 CLK7_LN buffer (RPMH_LN_BB_CLK2), and the reference is > load-bearing: with no clocks reference at all the chip polls but never > activates a tag, while a held rpmh clock vote lets it read (verified on > hardware). hw generally works better when plugged in! > PVDD is fed from PM7550 LDO20, the rail the downstream driver switches > for this chip. > > The enable line is routed to the chip's power-down input. The driver > drives its "en" descriptor to logical 1 to hold the chip powered down, > and on this board the chip is off while the pin is physically high, so > the line is GPIO_ACTIVE_HIGH. The pin is pulled up so the chip stays > off while the line is not driven. > > Assisted-by: Claude:claude-opus-4-8 > Assisted-by: Claude:claude-fable-5 > Signed-off-by: Jorijn van der Graaf <jorijnvdgraaf-R/nYH3Ey1/[email protected]> > --- Reviewed-by: Konrad Dybcio <[email protected]> Konrad