[PATCH v2 4/4] arm64: dts: imx8mp-evk: add dual-role usb port1 support

[Marco Felsch]

The i.MX8MP-EVK has a dual-role usb-type-c port marked as PORT1. By this
commit the dual-role support is added which allows the user-space to
assign usb-gadget functions to it via the configFS.

Below is the test results of a basic usbgadget-ethernet test using by
iperf3.

Accepted connection from 192.168.60.1, port 48172
[  5] local 192.168.60.2 port 5201 connected to 192.168.60.1 port 48176
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec   101 MBytes   850 Mbits/sec
[  5]   1.00-2.00   sec   105 MBytes   883 Mbits/sec
[  5]   2.00-3.00   sec   105 MBytes   885 Mbits/sec

...

- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-100.04 sec  10.3 GBytes   882 Mbits/sec                  receiver

Accepted connection from 192.168.60.1, port 42104
[  5] local 192.168.60.2 port 5201 connected to 192.168.60.1 port 42110
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   110 MBytes   925 Mbits/sec    0    540 KBytes
[  5]   1.00-2.00   sec   112 MBytes   938 Mbits/sec    0    566 KBytes
[  5]   2.00-3.00   sec   115 MBytes   969 Mbits/sec    0    566 KBytes

...

- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-37.00  sec  4.27 GBytes   990 Mbits/sec    0             sender

Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 88 ++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index 7816853162b3..20c3c41d6209 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -5,7 +5,9 @@
 
 /dts-v1/;
 
+#include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/phy/phy-imx8-pcie.h>
+#include <dt-bindings/usb/pd.h>
 #include "imx8mp.dtsi"
 
 / {
@@ -83,6 +85,22 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
 		gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 	};
+
+	usb-ss-mux {
+		compatible = "gpio-ss-mux";
+		enable-gpios = <&gpio2 20 GPIO_ACTIVE_LOW>;
+		select-gpios = <&gpio4 20 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_usb_ss_mux>;
+
+		orientation-switch;
+
+		port {
+			usb_ss_mux: endpoint {
+				remote-endpoint = <&usb_con_ss_mux>;
+			};
+		};
+	};
 };
 
 &flexspi {
@@ -336,6 +354,40 @@ &i2c2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_i2c2>;
 	status = "okay";
+
+	tcpc@50 {
+		compatible = "nxp,ptn5110";
+		reg = <0x50>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_tcpc>;
+		interrupt-parent = <&gpio4>;
+		interrupts = <19 IRQ_TYPE_LEVEL_LOW>;
+
+		connector {
+			compatible = "usb-c-connector";
+			label = "USB-C";
+			power-role = "dual";
+			data-role = "dual";
+			try-power-role = "sink";
+			source-pdos = <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)>;
+			sink-pdos = <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)
+				     PDO_VAR(5000, 20000, 3000)>;
+			op-sink-microwatt = <15000000>;
+			self-powered;
+
+			port {
+				usb_con_ss_mux: endpoint {
+					remote-endpoint = <&usb_ss_mux>;
+				};
+			};
+		};
+
+		port {
+			usb_con_ss: endpoint {
+				remote-endpoint = <&usb_dwc3_0_drd>;
+			};
+		};
+	};
 };
 
 &i2c3 {
@@ -442,14 +494,37 @@ &uart2 {
 	status = "okay";
 };
 
+&usb3_phy0 {
+	status = "okay";
+};
+
 &usb3_phy1 {
 	status = "okay";
 };
 
+&usb3_0 {
+	status = "okay";
+};
+
 &usb3_1 {
 	status = "okay";
 };
 
+&usb_dwc3_0 {
+	dr_mode = "otg";
+	hnp-disable;
+	srp-disable;
+	adp-disable;
+	usb-role-switch;
+	status = "okay";
+
+	port {
+		usb_dwc3_0_drd: endpoint {
+			remote-endpoint = <&usb_con_ss>;
+		};
+	};
+};
+
 &usb_dwc3_1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_usb1_vbus>;
@@ -659,6 +734,12 @@ MX8MP_IOMUXC_SD2_RESET_B__GPIO2_IO19	0x40
 		>;
 	};
 
+	pinctrl_tcpc: tcpcgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI1_TXD7__GPIO4_IO19	0x1e0
+		>;
+	};
+
 	pinctrl_uart1: uart1grp {
 		fsl,pins = <
 			MX8MP_IOMUXC_UART1_RXD__UART1_DCE_RX	0x140
@@ -690,6 +771,13 @@ MX8MP_IOMUXC_ECSPI1_MISO__UART3_DCE_CTS		0x140
 		>;
 	};
 
+	pinctrl_usb_ss_mux: usbssmuxgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD2_WP__GPIO2_IO20		0x104
+			MX8MP_IOMUXC_SAI1_MCLK__GPIO4_IO20	0x144
+		>;
+	};
+
 	pinctrl_usdhc2: usdhc2grp {
 		fsl,pins = <
 			MX8MP_IOMUXC_SD2_CLK__USDHC2_CLK	0x190

-- 
2.39.2