Enable the ST21NFCD on i2c9 (0x08), IRQ TLMM 41, reset TLMM 38
active-high. Compatible is st,st21nfcd (raw NCI).

SYS_CLK is LN_BB_CLK2. VPS_IO is L18B (vreg_l18b). ese-present and
uicc-present follow the public schematic (NFC_SWP1/SWP2: SWP_SE to
SIM1, SWP_UICC to SIM2). Reader path is tested; SE/HCE is not.

Signed-off-by: Kristian Brox <isyourbrainfoss@proton.me>
---
diff --git a/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts b/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts
index 29d6265..394237c 100644
--- a/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts
+++ b/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts
@@ -1004,7 +1004,23 @@
 &i2c9 {
 	status = "okay";
 
-	/* ST21NFC NFC @ 28 */
+	nfc@8 {
+		compatible = "st,st21nfcd";
+		reg = <0x08>;
+
+		interrupts-extended = <&tlmm 41 IRQ_TYPE_LEVEL_HIGH>;
+		reset-gpios = <&tlmm 38 GPIO_ACTIVE_HIGH>;
+
+		pinctrl-0 = <&nfc_int_default>, <&nfc_reset_default>;
+		pinctrl-names = "default";
+
+		clocks = <&rpmhcc RPMH_LN_BB_CLK2>;
+		vdd-io-supply = <&vreg_l18b>;
+
+		ese-present;
+		uicc-present;
+	};
+
 	/* VL53L3 ToF @ 29 */
 };
 
@@ -1649,6 +1665,21 @@
 		drive-strength = <2>;
 		bias-pull-up;
 	};
+
+	nfc_int_default: nfc-int-default-state {
+		pins = "gpio41";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	nfc_reset_default: nfc-reset-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+		output-high;
+	};
 };
 
 &uart5 {