diff mbox series

[v3] arm64: dts: imx8mn-var-som-symphony: update USB OTG for new board versions

Message ID 20230719135237.2986984-1-hugo@hugovil.com
State New
Headers show
Series [v3] arm64: dts: imx8mn-var-som-symphony: update USB OTG for new board versions | expand

Commit Message

Hugo Villeneuve July 19, 2023, 1:52 p.m. UTC 
From: Hugo Villeneuve <hvilleneuve@dimonoff.com>

USB OTG is currently not working for new versions of the Variscite
Symphony EVK and imx8mn nano SOM (versions >= 1.4a).

The PTN5150 circuitry on newer versions of the Symphony EVK board has
a non-standard configuration in which the PTN5150 IRQ pin is left
unconnected, and the PTN5150 ID pin is connected to GPIO1_IO11. This
requires changes to the ptn5150 driver to support this new mode.
Variscite have indicated their intention to submit those changes
upstream.

In the meantime, import device tree changes from linux-5.15 branch of
varigit repos to at least make the USB OTG port operate correctly in
host mode.

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
---
 .../dts/freescale/imx8mn-var-som-symphony.dts | 32 +++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)


base-commit: fdf0eaf11452d72945af31804e2a1048ee1b574c
prerequisite-patch-id: 45559b1f2aca74c1c733cc2d61db7b48b1b9594a
diff mbox series

Patch

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..a7a57442cb81 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts
@@ -1,11 +1,14 @@ 
 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
 /*
+ * Supports Symphony evaluation board versions >= 1.4a.
+ *
  * Copyright 2019-2020 Variscite Ltd.
  * Copyright (C) 2020 Krzysztof Kozlowski <krzk@kernel.org>
  */
 
 /dts-v1/;
 
+#include <dt-bindings/usb/pd.h>
 #include "imx8mn-var-som.dtsi"
 
 / {
@@ -100,14 +103,26 @@  enet-sel-hog {
 		};
 	};
 
+	/*
+	 * For Symphony board version <= 1.4, the PTN5150 IRQ pin is connected
+	 * to GPIO1_IO11 on the SoM (R106 present, R132 absent). From Symphony
+	 * board version >= 1.4a, the PTN5150 ID pin is connected to GPIO1_IO11
+	 * on the SoM (R106 absent, R132 present).
+	 */
 	extcon_usbotg1: typec@3d {
 		compatible = "nxp,ptn5150";
 		reg = <0x3d>;
 		interrupt-parent = <&gpio1>;
-		interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
+		interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_ptn5150>;
 		status = "okay";
+
+		port {
+			typec1_dr_sw: endpoint {
+				remote-endpoint = <&usb1_drd_sw>;
+			};
+		};
 	};
 };
 
@@ -148,8 +163,21 @@  &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 {