[PATCH v5 4/4] arm64: dts: qcom: shikra-iqs: add M.2 Wi-Fi and Bluetooth overlay

[Linghui Wu <linghui.wu@oss.qualcomm.com>]

Add an overlay for M.2 Key-E Wi-Fi and Bluetooth modules on the
Qualcomm Shikra IQS EVK.

The Shikra product design supports either the onboard Apache WCN3988
path or the M.2 HSP Cologne path at a time. The overlay describes the
board after hardware rework selects the M.2 path. Disable the inherited
onboard Wi-Fi and Bluetooth nodes when this overlay is selected.

Describe the PCIe and UART connections through the M.2 connector, the
3.3 V supply, the W_DISABLE signals and the PCIe reset signal.

The series has been validated on Shikra hardware.

Link: https://lore.kernel.org/r/20261102045815.2938940-1-linghui.wu@oss.qualcomm.com
Co-developed-by: Wei Deng <wei.deng@oss.qualcomm.com>
Signed-off-by: Wei Deng <wei.deng@oss.qualcomm.com>
Signed-off-by: Linghui Wu <linghui.wu@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/Makefile             |   2 +
 .../dts/qcom/shikra-iqs-evk-m2-wifi-bt.dtso   | 122 ++++++++++++++++++
 2 files changed, 124 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/shikra-iqs-evk-m2-wifi-bt.dtso

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 8329c06b60a3..037dbe8a39ce 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -410,10 +410,12 @@ dtb-$(CONFIG_ARCH_QCOM)	+= shikra-iqs-evk.dtb
 shikra-cqm-evk-imx577-camera-dtbs	:= shikra-cqm-evk.dtb shikra-cqm-cqs-evk-imx577-camera.dtbo
 shikra-cqs-evk-imx577-camera-dtbs	:= shikra-cqs-evk.dtb shikra-cqm-cqs-evk-imx577-camera.dtbo
 shikra-iqs-evk-imx577-camera-dtbs	:= shikra-iqs-evk.dtb shikra-iqs-evk-imx577-camera.dtbo
+shikra-iqs-evk-m2-wifi-bt-dtbs	:= shikra-iqs-evk.dtb shikra-iqs-evk-m2-wifi-bt.dtbo
 
 dtb-$(CONFIG_ARCH_QCOM)	+= shikra-cqm-evk-imx577-camera.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= shikra-cqs-evk-imx577-camera.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= shikra-iqs-evk-imx577-camera.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= shikra-iqs-evk-m2-wifi-bt.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm4250-oneplus-billie2.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm4450-qrd.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm6115-fxtec-pro1x.dtb
diff --git a/arch/arm64/boot/dts/qcom/shikra-iqs-evk-m2-wifi-bt.dtso b/arch/arm64/boot/dts/qcom/shikra-iqs-evk-m2-wifi-bt.dtso
new file mode 100644
index 000000000000..ef0f197a53f8
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/shikra-iqs-evk-m2-wifi-bt.dtso
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) 2026 Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	m2_keye_3p3: regulator-m2-keye-3p3 {
+		compatible = "regulator-fixed";
+		regulator-name = "VREG_3P3_KEYE";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&expander3 6 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+	wifi-bt-connector {
+		compatible = "pcie-m2-e-connector";
+
+		vpcie3v3-supply = <&m2_keye_3p3>;
+		w-disable1-gpios = <&tlmm 61 GPIO_ACTIVE_LOW>;
+		w-disable2-gpios = <&tlmm 60 GPIO_ACTIVE_LOW>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				m2_e_pcie_ep: endpoint@0 {
+					reg = <0>;
+					remote-endpoint = <&pcie_port0_ep>;
+				};
+			};
+
+			port@3 {
+				reg = <3>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				m2_e_uart_ep: endpoint@0 {
+					reg = <0>;
+					remote-endpoint = <&uart8_ep>;
+				};
+			};
+		};
+	};
+};
+
+&{/wcn3988-pmu} {
+	status = "disabled";
+};
+
+&pcie {
+	iommu-map = <0x0 &apps_smmu 0x0800 0x0 0x1>,
+		    <0x100 &apps_smmu 0x0801 0x0 0x1>;
+	pinctrl-0 = <&pcie_default_state>;
+	pinctrl-names = "default";
+	vddpe-3v3-supply = <&m2_keye_3p3>;
+	wake-gpios = <&tlmm 119 GPIO_ACTIVE_LOW>;
+
+	status = "okay";
+};
+
+&pcie_phy {
+	vdda-phy-supply = <&pm8150_l12>;
+	vdda-pll-supply = <&pm8150_l9>;
+
+	status = "okay";
+};
+
+&pcie_port0 {
+	compatible = "pciclass,0604";
+	reset-gpios = <&tlmm 118 GPIO_ACTIVE_LOW>;
+
+	port {
+		pcie_port0_ep: endpoint {
+			remote-endpoint = <&m2_e_pcie_ep>;
+		};
+	};
+};
+
+&uart8 {
+	bluetooth {
+		status = "disabled";
+	};
+
+	port {
+		uart8_ep: endpoint {
+			remote-endpoint = <&m2_e_uart_ep>;
+		};
+	};
+};
+
+&tlmm {
+	pcie_default_state: pcie-default-state {
+		clkreq-pins {
+			pins = "gpio117";
+			function = "pcie0_clk_req_n";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		wake-pins {
+			pins = "gpio119";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+};
+
+&wifi {
+	status = "disabled";
+};
-- 
2.43.0