[PATCH] arm64: dts: qcom: sdm845-lg: Enable NFC
From: Paul Sajna <hidden>
Date: 2026-09-03 02:03:25
Also in:
linux-arm-msm, lkml, phone-devel
Subsystem:
arm/qualcomm mailing list, arm/qualcomm support, the rest · Maintainers:
Bjorn Andersson, Konrad Dybcio, Linus Torvalds
Add the i2c and tlmm nodes to support the NXP PN547 NFC chip Downstream dtsi for reference: https://github.com/LineageOS/android_kernel_lge_sdm845/blob/lineage-22.2/arch/arm64/boot/dts/lge/sdm845-judy/sdm845-judyln_lao_com/sdm845-judyln_lao_com-nfc.dtsi Signed-off-by: Paul Sajna <redacted> --- arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi | 31 ++++++++++++++++++++++++++ 1 file changed, 31 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
index b030a10009c5..069d1cf3dead 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi@@ -471,6 +471,25 @@ &gpu { status = "okay"; }; +&i2c3 { + clock-frequency = <1000000>; + + status = "okay"; + + nfc@28 { + compatible = "nxp,pn547", "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-names = "default"; + }; +}; + &ipa { status = "okay"; };
@@ -551,6 +570,11 @@ &qupv3_id_1 { status = "okay"; }; +&qup_i2c3_default { + drive-strength = <2>; + bias-disable; +}; + &qup_uart9_rx { drive-strength = <2>; bias-pull-up;
@@ -609,6 +633,13 @@ sd_card_det_n: sd-card-det-n-state { function = "gpio"; bias-pull-up; }; + + nfc_default: nfc-default-state { + pins = "gpio12", "gpio62", "gpio63"; + function = "gpio"; + drive-strength = <6>; + bias-pull-up; + }; }; &uart6 {
--- base-commit: 32b6ef9a5d0eca44f9cd91f52f4faa89f145a0de change-id: 20260902-sdm845-lg-judy-nfc-5f9e5775393d Best regards, -- Paul Sajna [off-list ref]