From: Rudraksha Gupta <guptarud@gmail.com>
Date: Mon, 24 Nov 2025 23:35:24 +0000 (-0800)
Subject: ARM: dts: qcom: msm8960: expressatt: Add NFC
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7f07c27808e68af92cbf6d352f675248c3ea7cab;p=thirdparty%2Fkernel%2Flinux.git

ARM: dts: qcom: msm8960: expressatt: Add NFC

Add pn544 NFC chip

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Rudraksha Gupta <guptarud@gmail.com>
Link: https://lore.kernel.org/r/20251124-expressatt_nfc_accel_magn_light-v4-3-9c5686ad67e2@gmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---

diff --git a/arch/arm/boot/dts/qcom/qcom-msm8960-samsung-expressatt.dts b/arch/arm/boot/dts/qcom/qcom-msm8960-samsung-expressatt.dts
index 8d75ebd7976c9..4f9b59db7bc36 100644
--- a/arch/arm/boot/dts/qcom/qcom-msm8960-samsung-expressatt.dts
+++ b/arch/arm/boot/dts/qcom/qcom-msm8960-samsung-expressatt.dts
@@ -182,6 +182,22 @@
 		bias-disable;
 		drive-strength = <2>;
 	};
+
+	nfc_default: nfc-default-state {
+		irq-pins {
+			pins = "gpio106";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		firmware-pins {
+			pins = "gpio92";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-disable;
+		};
+	};
 };
 
 &pm8921 {
@@ -195,6 +211,14 @@
 		input-enable;
 		bias-disable;
 	};
+
+	nfc_enable: nfc-enable-state {
+		pins = "gpio21";
+		function = "normal";
+		bias-disable;
+		qcom,drive-strength = <PMIC_GPIO_STRENGTH_LOW>;
+		power-source = <PM8921_GPIO_S4>;
+	};
 };
 
 &rpm {
@@ -442,3 +466,24 @@
 	dr_mode = "otg";
 	status = "okay";
 };
+
+&gsbi7 {
+	qcom,mode = <GSBI_PROT_I2C>;
+
+	status = "okay";
+};
+
+&gsbi7_i2c {
+	status = "okay";
+
+	nfc@2b {
+		compatible = "nxp,pn544-i2c";
+		reg = <0x2b>;
+		interrupts-extended = <&tlmm 106 IRQ_TYPE_EDGE_RISING>;
+		enable-gpios = <&pm8921_gpio 21 GPIO_ACTIVE_HIGH>;
+		firmware-gpios = <&tlmm 92 GPIO_ACTIVE_HIGH>;
+
+		pinctrl-0 = <&nfc_default &nfc_enable>;
+		pinctrl-names = "default";
+	};
+};