[PATCH v3 4/5] arm64: dts: qcom: sdm845-shift-axolotl: Enable NFC

David Heidelberg via B4 Relay posted 5 patches 3 days, 22 hours ago
[PATCH v3 4/5] arm64: dts: qcom: sdm845-shift-axolotl: Enable NFC
Posted by David Heidelberg via B4 Relay 3 days, 22 hours ago
From: David Heidelberg <david@ixit.cz>

Enable NFC controller NXP PN553.

Signed-off-by: David Heidelberg <david@ixit.cz>
---
 arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts | 52 +++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
index 783d66cf5b0f8..101597c666332 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts
@@ -431,6 +431,26 @@ &gpu_zap_shader {
 	firmware-name = "qcom/sdm845/SHIFT/axolotl/a630_zap.mbn";
 };
 
+&i2c3 {
+	clock-frequency = <400000>;
+
+	status = "okay";
+
+	nfc@28 {
+		compatible = "nxp,pn553", "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_default>;
+		pinctrl-1 = <&nfc_sleep>;
+		pinctrl-names = "default", "sleep";
+	};
+};
+
 &i2c5 {
 	status = "okay";
 
@@ -609,6 +629,38 @@ &slpi_pas {
 &tlmm {
 	gpio-reserved-ranges = <0 4>, <81 4>;
 
+	nfc_default: nfc-default-state {
+		enable-pins {
+			pins = "gpio12", "gpio62";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		int-pins {
+			pins = "gpio63";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
+	nfc_sleep: nfc-sleep-state {
+		enable-pins {
+			pins = "gpio12", "gpio62";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-disable;
+		};
+
+		int-pins {
+			pins = "gpio63";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
 	sde_dsi_active: sde-dsi-active-state {
 		pins = "gpio6", "gpio11";
 		function = "gpio";

-- 
2.53.0
Re: [PATCH v3 4/5] arm64: dts: qcom: sdm845-shift-axolotl: Enable NFC
Posted by Dmitry Baryshkov 2 days, 15 hours ago
On Fri, Apr 03, 2026 at 03:58:49PM +0200, David Heidelberg via B4 Relay wrote:
> From: David Heidelberg <david@ixit.cz>
> 
> Enable NFC controller NXP PN553.
> 
> Signed-off-by: David Heidelberg <david@ixit.cz>
> ---
>  arch/arm64/boot/dts/qcom/sdm845-shift-axolotl.dts | 52 +++++++++++++++++++++++
>  1 file changed, 52 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>


-- 
With best wishes
Dmitry