[PATCH v2] arm64: dts: qcom: shikra-iqs: add M.2 Wi-Fi and Bluetooth overlay

[Linghui Wu]

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

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. Disable
the onboard Wi-Fi and Bluetooth nodes when the overlay is selected.

The Wi-Fi PCIe path was tested on a Shikra IQS EVK with a QCC2072
module. The overlay was applied, the link trained at Gen2 x1 and the
endpoint enumerated. Bluetooth UART and HCI runtime validation is
pending.

Co-developed-by: Wei Deng <wei.deng@xxxxxxxxxxxxxxxx>
Signed-off-by: Wei Deng <wei.deng@xxxxxxxxxxxxxxxx>
Signed-off-by: Linghui Wu <linghui.wu@xxxxxxxxxxxxxxxx>
---
Changes in v2:
- Drop regulator-boot-on and startup-delay-us from the 3.3 V regulator.

 arch/arm64/boot/dts/qcom/Makefile             |   1 +
 .../dts/qcom/shikra-iqs-evk-m2-wifi-bt.dtso   | 106 ++++++++++++++++++
 2 files changed, 107 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 1c86e7e98f55..799faa32e2d9 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -339,6 +339,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sdx75-idp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= shikra-cqm-evk.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= shikra-cqs-evk.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= shikra-iqs-evk.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= shikra-iqs-evk-m2-wifi-bt.dtbo
 dtb-$(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..9496c6558eef
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/shikra-iqs-evk-m2-wifi-bt.dtso
@@ -0,0 +1,106 @@
+// 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 = <&qps_gpio_expander 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";
+};
+
+&i2c3 {
+	qps_gpio_expander: gpio@3c {
+		compatible = "nxp,pca9534";
+		reg = <0x3c>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+};
+
+&pcie {
+	iommu-map = <0x0 &apps_smmu 0x0800 0x0 0x1>,
+		    <0x100 &apps_smmu 0x0801 0x0 0x1>;
+	vddpe-3v3-supply = <&m2_keye_3p3>;
+};
+
+&pcie_port0 {
+	compatible = "pciclass,0604";
+	reset-gpios = <&tlmm 118 GPIO_ACTIVE_LOW>;
+
+	port {
+		pcie_port0_ep: endpoint {
+			remote-endpoint = <&m2_e_pcie_ep>;
+		};
+	};
+};
+
+&tc9563 {
+	reg = <0x1ff00 0x0 0x0 0x0 0x0>;
+	status = "disabled";
+};
+
+&uart8 {
+	bluetooth {
+		status = "disabled";
+	};
+
+	port {
+		uart8_ep: endpoint {
+			remote-endpoint = <&m2_e_uart_ep>;
+		};
+	};
+};
+
+&wifi {
+	status = "disabled";
+};
-- 
2.43.0