linux-kernel - [PATCH] arm64: dts: imx8mn-var-som-symphony: fix USB OTG

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Date:   Tue,  4 Jul 2023 11:02:40 -0400
From:   Hugo Villeneuve <hugo@...ovil.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>
Cc:     hugo@...ovil.com, Hugo Villeneuve <hvilleneuve@...onoff.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: dts: imx8mn-var-som-symphony: fix USB OTG

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

USB OTG is currently broken on the Variscite Symphony EVK and imx8mn
nano SOM.

Import changes from linux-5.15 branch of varigit repos to fix it.

Link: https://github.com/varigit/linux-imx.git
Fixes: 7358e05bddca ("arm64: dts: imx8mn-var-som-symphony: Add Variscite Symphony board with VAR-SOM-MX8MN")
Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
---
 .../dts/freescale/imx8mn-var-som-symphony.dts | 37 ++++++++++++++++++-
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts
index 406a711486da..aef89198f24c 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts
@@ -6,6 +6,7 @@
 
 /dts-v1/;
 
+#include <dt-bindings/usb/pd.h>
 #include "imx8mn-var-som.dtsi"
 
 / {
@@ -104,10 +105,29 @@ extcon_usbotg1: typec@3d {
 		compatible = "nxp,ptn5150";
 		reg = <0x3d>;
 		interrupt-parent = <&gpio1>;
-		interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
+		interrupts = <11 IRQ_TYPE_NONE>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_ptn5150>;
 		status = "okay";
+
+		port {
+			typec1_dr_sw: endpoint {
+				remote-endpoint = <&usb1_drd_sw>;
+			};
+		};
+
+		typec1_con: 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;
+		};
 	};
 };
 
@@ -148,8 +168,21 @@ &uart3 {
 };
 
 &usbotg1 {
+	dr_mode = "otg";
+	hnp-disable;
+	srp-disable;
+	adp-disable;
+	usb-role-switch;
 	disable-over-current;
-	extcon = <&extcon_usbotg1>, <&extcon_usbotg1>;
+	samsung,picophy-pre-emp-curr-control = <3>;
+	samsung,picophy-dc-vol-level-adjust = <7>;
+	status = "okay";
+
+	port {
+		usb1_drd_sw: endpoint {
+			remote-endpoint = <&typec1_dr_sw>;
+		};
+	};
 };
 
 &iomuxc {
-- 
2.30.2