[PATCH v1 18/18] arm64: dts: mediatek: mt6795-xperia-m5: Add NXP PN547 NFC on I2C3

[AngeloGioacchino Del Regno]

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

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
---
 .../dts/mediatek/mt6795-sony-xperia-m5.dts    | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt6795-sony-xperia-m5.dts b/arch/arm64/boot/dts/mediatek/mt6795-sony-xperia-m5.dts
index bff0760cc1c8..8f00232e7348 100644
--- a/arch/arm64/boot/dts/mediatek/mt6795-sony-xperia-m5.dts
+++ b/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"
 
 / {
@@ -112,6 +113,16 @@ magnetometer at 0x12 {
 		reg = <0x12>;
 	};
 
+	pn547: nfc at 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 at 48 {
 		compatible = "sensortek,stk3310";
 		reg = <0x48>;
@@ -122,6 +133,19 @@ proximity at 48 {
 };
 
 &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>;
-- 
2.40.0