arm64: dts: mediatek: mt6795-xperia-m5: Add NXP PN547 NFC on I2C3

Add support for the NXP PN547 NFC chip found on this smartphone and
configure its pins.

Signed-off-by: AngeloGioacchino Del Regno <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Matthias Brugger <[email protected]>

Author: AngeloGioacchino Del Regno

arch/arm64/boot/dts/mediatek/mt6795-sony-xperia-m5.dts

@@ -5,6 +5,7 @@
  */
 
 /dts-v1/;
+#include <dt-bindings/gpio/gpio.h>
 #include "mt6795.dtsi"
 
 / {
@@ -100,6 +101,16 @@
 	pinctrl-0 = <&i2c3_pins>;
 	status = "okay";
 
+	pn547: nfc@28 {
+		compatible = "nxp,pn544-i2c";
+		reg = <0x28>;
+		interrupts-extended = <&pio 3 IRQ_TYPE_EDGE_RISING>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&nfc_pins>;
+		enable-gpios = <&pio 149 GPIO_ACTIVE_HIGH>;
+		firmware-gpios = <&pio 94 GPIO_ACTIVE_HIGH>;
+	};
+
 	proximity@48 {
 		compatible = "sensortek,stk3310";
 		reg = <0x48>;
@@ -110,6 +121,19 @@
 };
 
 &pio {
+	nfc_pins: nfc-pins {
+		pins-irq {
+			pinmux = <PINMUX_GPIO3__FUNC_GPIO3>;
+			bias-pull-down;
+			input-enable;
+		};
+
+		pins-fw-ven {
+			pinmux = <PINMUX_GPIO94__FUNC_GPIO94>,
+				 <PINMUX_GPIO149__FUNC_GPIO149>;
+		};
+	};
+
 	ts_pins: touchscreen-pins {
 		pins-irq {
 			pinmux = <PINMUX_GPIO6__FUNC_GPIO6>;