linux-kernel - [PATCH v2] arm64: dts: qcom: sdm845-oneplus-common: add PN553 NFC

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Date:   Tue,  7 Mar 2023 19:59:42 +0100
From:   Gergo Koteles <soyer@....hu>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, phone-devel@...r.kernel.org,
        Gergo Koteles <soyer@....hu>
Subject: [PATCH v2] arm64: dts: qcom: sdm845-oneplus-common: add PN553 NFC

The OnePlus 6/6T both have a NQ330 (PN553 + P73N2M0).
The PN533 supported by the nxp-nci-i2c driver in mainline.
It detects/reads NFC tags using "nfctool".

Signed-off-by: Gergo Koteles <soyer@....hu>
---
 .../boot/dts/qcom/sdm845-oneplus-common.dtsi  | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
index 64638ea94db7..5e45801031d8 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
@@ -380,6 +380,24 @@ zap-shader {
 	};
 };
 
+&i2c3 {
+	clock-frequency = <400000>;
+	status = "okay";
+
+	nfc@28 {
+		compatible = "nxp,nxp-nci-i2c";
+		reg = <0x28>;
+
+		interrupts-extended = <&tlmm 63 IRQ_TYPE_EDGE_RISING>;
+
+		enable-gpios = <&tlmm 12 GPIO_ACTIVE_HIGH>;
+		firmware-gpios = <&tlmm 62 GPIO_ACTIVE_HIGH>;
+
+		pinctrl-0 = <&nfc_int_active &nfc_enable_active &nfc_firmware_active>;
+		pinctrl-names = "default";
+	};
+};
+
 &i2c10 {
 	status = "okay";
 	clock-frequency = <100000>;
@@ -753,6 +771,27 @@ &usb_1_hsphy {
 &tlmm {
 	gpio-reserved-ranges = <0 4>, <81 4>;
 
+	nfc_int_active: nfc-int-active-state {
+		pins = "gpio63";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-up;
+	};
+
+	nfc_enable_active: nfc-enable-active-state {
+		pins = "gpio12";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-up;
+	};
+
+	nfc_firmware_active: nfc-firmware-active-state {
+		pins = "gpio62";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-up;
+	};
+
 	tri_state_key_default: tri-state-key-default-state {
 		pins = "gpio40", "gpio42", "gpio26";
 		function = "gpio";
-- 
2.39.2