[PATCH v4 4/4] arm64: dts: ti: k3-am69-sk: Add overlay for PCIE0 Endpoint Mode

[Siddharth Vadapalli <s-vadapalli@ti.com>]

Add overlay to enable the PCIE0 instance of PCIe on AM69-SK in Endpoint
mode of operation.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
---

This patch has been newly introduced in this series.

 arch/arm64/boot/dts/ti/Makefile               |  4 ++
 .../boot/dts/ti/k3-am69-sk-pcie0-ep.dtso      | 53 +++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-am69-sk-pcie0-ep.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 04438f7136b8..db5ae27467e7 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -126,6 +126,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm.dtb
 
 # Boards with J784s4 SoC
 dtb-$(CONFIG_ARCH_K3) += k3-am69-sk.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am69-sk-pcie0-ep.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm-pcie0-pcie1-ep.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm-quad-port-eth-exp1.dtbo
@@ -198,6 +199,8 @@ k3-am68-sk-base-board-pcie1-ep-dtbs := k3-am68-sk-base-board.dtb \
 	k3-am68-sk-base-board-pcie1-ep.dtbo
 k3-am69-sk-csi2-dual-imx219-dtbs := k3-am69-sk.dtb \
 	k3-j721e-sk-csi2-dual-imx219.dtbo
+k3-am69-sk-pcie0-ep-dtbs := k3-am69-sk.dtb \
+	k3-am69-sk-pcie0-ep.dtbo
 k3-j7200-evm-pcie1-ep-dtbs := k3-j7200-common-proc-board.dtb \
 	k3-j7200-evm-pcie1-ep.dtbo
 k3-j721e-common-proc-board-infotainment-dtbs := k3-j721e-common-proc-board.dtb \
@@ -237,6 +240,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
 	k3-am68-sk-base-board-csi2-dual-imx219.dtb \
 	k3-am68-sk-base-board-pcie1-ep.dtb \
 	k3-am69-sk-csi2-dual-imx219.dtb \
+	k3-am69-sk-pcie0-ep.dtb \
 	k3-j7200-evm-pcie1-ep.dtb \
 	k3-j721e-common-proc-board-infotainment.dtb \
 	k3-j721e-evm-pcie0-ep.dtb \
diff --git a/arch/arm64/boot/dts/ti/k3-am69-sk-pcie0-ep.dtso b/arch/arm64/boot/dts/ti/k3-am69-sk-pcie0-ep.dtso
new file mode 100644
index 000000000000..9a5bcf282a9e
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am69-sk-pcie0-ep.dtso
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/**
+ * DT Overlay for enabling PCIE0 instances of PCIe in Endpoint Configuration
+ * on AM69-SK.
+ *
+ * AM69-SK Product Link: https://www.ti.com/tool/SK-AM69
+ *
+ * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/soc/ti,sci_pm_domain.h>
+
+#include "k3-pinctrl.h"
+
+/*
+ * Since Root Complex and Endpoint modes are mutually exclusive
+ * disable Root Complex mode.
+ */
+&pcie0_rc {
+	status = "disabled";
+};
+
+&cbass_main {
+	#address-cells = <2>;
+	#size-cells = <2>;
+	interrupt-parent = <&gic500>;
+
+	pcie0_ep: pcie-ep@2900000 {
+		compatible = "ti,j784s4-pcie-ep";
+		reg = <0x00 0x02900000 0x00 0x1000>,
+		      <0x00 0x02907000 0x00 0x400>,
+		      <0x00 0x0d000000 0x00 0x00800000>,
+		      <0x00 0x10000000 0x00 0x08000000>;
+		reg-names = "intd_cfg", "user_cfg", "reg", "mem";
+		interrupt-names = "link_state";
+		interrupts = <GIC_SPI 318 IRQ_TYPE_EDGE_RISING>;
+		max-link-speed = <3>;
+		num-lanes = <4>;
+		power-domains = <&k3_pds 332 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 332 0>;
+		clock-names = "fck";
+		max-functions = /bits/ 8 <6>;
+		max-virtual-functions = /bits/ 8 <4 4 4 4 0 0>;
+		dma-coherent;
+		phys = <&serdes1_pcie_link>;
+		phy-names = "pcie-phy";
+		ti,syscon-pcie-ctrl = <&pcie0_ctrl 0x0>;
+	};
+};
-- 
2.43.0