linux-kernel - [PATCH 1/1] arm64: dts: imx8mp-evk: add PCIe Endpoint function overlay file

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Message-Id: <20241001183748.256607-1-Frank.Li@nxp.com>
Date: Tue,  1 Oct 2024 14:37:47 -0400
From: Frank Li <Frank.Li@....com>
To: Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	imx@...ts.linux.dev (open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE),
	linux-arm-kernel@...ts.infradead.org (moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE),
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 1/1] arm64: dts: imx8mp-evk: add PCIe Endpoint function overlay file

PCIe of i.MX8MP is dual role PCIe controller, which can work as root
complex (RC) mode and endpoint (EP) mode. Add overlay file to let it work
as EP mode.

Signed-off-by: Frank Li <Frank.Li@....com>
---
 arch/arm64/boot/dts/freescale/Makefile         |  2 ++
 .../boot/dts/freescale/imx8mp-evk-pcie-ep.dtso | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-evk-pcie-ep.dtso

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 9d3df8b218a2e..0d8cf020ec2dd 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -197,7 +197,9 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-mallow.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-yavia.dtb
 
 imx8mp-evk-mx8-dlvds-lcd1-dtbs += imx8mp-evk.dtb imx8mp-evk-mx8-dlvds-lcd1.dtbo
+imx8mp-evk-pcie-ep-dtbs += imx8mp-evk.dtb imx8mp-evk-pcie-ep.dtbo
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-evk-mx8-dlvds-lcd1.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-evk-pcie-ep.dtb
 
 imx8mp-tqma8mpql-mba8mpxl-lvds-dtbs += imx8mp-tqma8mpql-mba8mpxl.dtb imx8mp-tqma8mpql-mba8mpxl-lvds.dtbo
 imx8mp-tqma8mpql-mba8mpxl-lvds-g133han01-dtbs += imx8mp-tqma8mpql-mba8mpxl.dtb imx8mp-tqma8mpql-mba8mpxl-lvds-g133han01.dtbo
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk-pcie-ep.dtso b/arch/arm64/boot/dts/freescale/imx8mp-evk-pcie-ep.dtso
new file mode 100644
index 0000000000000..400e36db9dccf
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk-pcie-ep.dtso
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2024 NXP
+ */
+
+/dts-v1/;
+/plugin/;
+
+&pcie {
+	status = "disabled";
+};
+
+&pcie_ep {
+	pinctrl-0 = <&pinctrl_pcie0>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
-- 
2.34.1