From 6a9624b82153b89116eb58610878f243644159c6 Mon Sep 17 00:00:00 2001
From: Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com>
Date: Sun, 3 May 2026 20:39:51 +0530
Subject: [PATCH] PENDING: arm64: dts: qcom: talos-evk: add QPS615 m.2 ethernet
 staging overlay

Add talos-evk-staging.dtso for the QPS615 m.2 e-key daughter card.
When installed, the QPS615 PCIe switch replaces the direct WCN7850 WLAN
connection at pcie_port0. The overlay:

  - Enables PCIe with IOMMU mappings (required by QPS615 DMA traffic)
  - Disables the direct WCN7850 WLAN at pcie_port0 (wifi@0)
  - Moves WLAN to QPS615 downstream port 1 (pcie@1,0, bus 3 dev 0)
  - Describes dual Ethernet (TC956X) at QPS615 downstream port 3
    (pci@3,0, bus 5 dev 0 fn0/fn1)

Signed-off-by: Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/Makefile             |  2 +
 .../boot/dts/qcom/talos-evk-staging.dtso      | 99 +++++++++++++++++++
 2 files changed, 101 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/talos-evk-staging.dtso

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index db3daf7c841fb..6e751aeea193d 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -531,4 +531,6 @@ dtb-$(CONFIG_ARCH_QCOM)	+= talos-evk-camx.dtb
 
 dtb-$(CONFIG_ARCH_QCOM) += talos-staging.dtbo
 
+dtb-$(CONFIG_ARCH_QCOM) += talos-evk-staging.dtbo
+
 dtb-$(CONFIG_ARCH_QCOM) += kodiak-staging.dtbo
diff --git a/arch/arm64/boot/dts/qcom/talos-evk-staging.dtso b/arch/arm64/boot/dts/qcom/talos-evk-staging.dtso
new file mode 100644
index 0000000000000..ec1f40853ccd5
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/talos-evk-staging.dtso
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&pcie {
+	iommu-map = <0x0 &apps_smmu 0x400 0x1>,
+		    <0x100 &apps_smmu 0x401 0x1>,
+		    <0x208 &apps_smmu 0x402 0x1>,
+		    <0x210 &apps_smmu 0x403 0x1>,
+		    <0x218 &apps_smmu 0x404 0x1>,
+		    <0x300 &apps_smmu 0x405 0x1>,
+		    <0x400 &apps_smmu 0x406 0x1>,
+		    <0x500 &apps_smmu 0x407 0x1>,
+		    <0x501 &apps_smmu 0x408 0x1>;
+
+	status = "okay";
+};
+
+/*
+ * With QPS615 installed, the m.2 E-key slot is occupied by the QPS615
+ * PCIe switch (pci1179,0623) rather than the direct WCN7850 WLAN chip.
+ *
+ * QPS615 downstream port layout:
+ *   pcie@1,0 (bus 3) — WCN7850 WLAN, moved here from the direct connection
+ *   pcie@2,0 (bus 4) — free downstream port
+ *   pci@3,0  (bus 5) — TC956X dual Ethernet (QPS615 GPIO-reset PHYs)
+ */
+&pcie_port0 {
+	wifi@0 {
+		status = "disabled";
+
+		pcie@1,0 {
+			reg = <0x20800 0x0 0x0 0x0 0x0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			device_type = "pci";
+			ranges;
+			bus-range = <0x3 0x3>;
+
+			wifi@0,0 {
+				compatible = "pci17cb,1103";
+				reg = <0x30000 0x0 0x0 0x0 0x0>;
+
+				qcom,calibration-variant = "QC_QCS615_Ride";
+
+				vddrfacmn-supply = <&vreg_pmu_rfa_cmn>;
+				vddaon-supply = <&vreg_pmu_aon_0p59>;
+				vddwlcx-supply = <&vreg_pmu_wlcx_0p8>;
+				vddwlmx-supply = <&vreg_pmu_wlmx_0p85>;
+				vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>;
+				vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>;
+				vddrfa1p8-supply = <&vreg_pmu_rfa_1p7>;
+				vddpcie0p9-supply = <&vreg_pmu_pcie_0p9>;
+				vddpcie1p8-supply = <&vreg_pmu_pcie_1p8>;
+			};
+		};
+
+		pci@3,0 {
+			reg = <0x21800 0x0 0x0 0x0 0x0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			device_type = "pci";
+			ranges;
+			bus-range = <0x5 0xff>;
+			compatible = "pci1179,0623";
+
+			qps615: pci@0,0 {
+				reg = <0x50000 0x0 0x0 0x0 0x0>;
+				#address-cells = <3>;
+				#size-cells = <2>;
+				device_type = "pci";
+				ranges;
+
+				gpio-controller;
+				#gpio-cells = <2>;
+
+				phy-reset-gpios = <&qps615 0 GPIO_ACTIVE_LOW>;
+				reset-deassert-us = <221000>;
+			};
+
+			pci@0,1 {
+				reg = <0x50100 0x0 0x0 0x0 0x0>;
+				#address-cells = <3>;
+				#size-cells = <2>;
+				device_type = "pci";
+				ranges;
+
+				phy-reset-gpios = <&qps615 1 GPIO_ACTIVE_LOW>;
+				reset-deassert-us = <20000>;
+			};
+		};
+	};
+};