[PATCH V4 4/8] arm64: dts: imx8mq-evk: Describe the PCIe M.2 Key E connector

["Sherry Sun (OSS)" <sherry.sun@oss.nxp.com>]

From: Sherry Sun <sherry.sun@nxp.com>

The i.MX8MQ-EVK has the PCIe M.2 Mechanical Key E connector to connect
wireless connectivity cards over PCIe and UART interfaces. Hence,
describe the connector node and link it with the PCIe 1 Root Port and
UART3 nodes through graph port/endpoint.

Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
---
 arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 44 ++++++++++++++++++--
 1 file changed, 40 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
index 383a0976d457..482e5203e879 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
@@ -21,6 +21,36 @@ memory@40000000 {
 		reg = <0x00000000 0x40000000 0 0xc0000000>;
 	};
 
+	m2-connector {
+		compatible = "pcie-m2-e-connector";
+		vpcie3v3-supply = <&reg_pcie1>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0>;
+				m2_e_pcie_ep: endpoint@0 {
+					reg = <0>;
+					remote-endpoint = <&pcie1_port0_ep>;
+				};
+			};
+
+			port@3 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <3>;
+				m2_e_uart_ep: endpoint@0 {
+					reg = <0>;
+					remote-endpoint = <&uart3_ep>;
+				};
+			};
+		};
+	};
+
 	pcie0_refclk: pcie0-refclk {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
@@ -420,8 +450,12 @@ &pcie1_ep {
 
 &pcie1_port0 {
 	reset-gpios = <&gpio5 12 GPIO_ACTIVE_LOW>;
-	vpcie3v3-supply = <&reg_pcie1>;
-	vpcie3v3aux-supply = <&reg_pcie1>;
+
+	port {
+		pcie1_port0_ep: endpoint {
+			remote-endpoint = <&m2_e_pcie_ep>;
+		};
+	};
 };
 
 &pgc_gpu {
@@ -506,8 +540,10 @@ &uart3 { /* BT */
 	uart-has-rtscts;
 	status = "okay";
 
-	bluetooth {
-		compatible = "nxp,88w8987-bt";
+	port {
+		uart3_ep: endpoint {
+			remote-endpoint = <&m2_e_uart_ep>;
+		};
 	};
 };
 
-- 
2.50.1