linux-kernel - [PATCH 1/2] arm64: dts: freescale: imx93-phyboard-nash: Add USB vbus regulators

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Message-Id: <20250916080635.1520551-1-primoz.fiser@norik.com>
Date: Tue, 16 Sep 2025 10:06:34 +0200
From: Primoz Fiser <primoz.fiser@...ik.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.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>
Cc: devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	upstream@...ts.phytec.de
Subject: [PATCH 1/2] arm64: dts: freescale: imx93-phyboard-nash: Add USB vbus regulators

Add USB vbus regulators to silence the following kernel warnings:

  usb_phy_generic usbphynop1: dummy supplies not allowed for exclusive requests (id=vbus)
  usb_phy_generic usbphynop2: dummy supplies not allowed for exclusive requests (id=vbus)

Because generic USB PHY driver requires exclusive vbus regulators since
commit 75fd6485ccce ("usb: phy: generic: Get the vbus supply").

Signed-off-by: Primoz Fiser <primoz.fiser@...ik.com>
---
 .../dts/freescale/imx93-phyboard-nash.dts     | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93-phyboard-nash.dts b/arch/arm64/boot/dts/freescale/imx93-phyboard-nash.dts
index 5599e296919f..9e875e082ee8 100644
--- a/arch/arm64/boot/dts/freescale/imx93-phyboard-nash.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-phyboard-nash.dts
@@ -71,6 +71,22 @@ iio-hwmon {
 		io-channels = <&curr_sens 0>;
 	};
 
+	reg_usb1_vbus: regulator-usb1-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "USB1_VBUS";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+	};
+
+	reg_usb2_vbus: regulator-usb2-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "USB2_VBUS";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+	};
+
 	reg_usdhc2_vmmc: regulator-usdhc2 {
 		compatible = "regulator-fixed";
 		gpio = <&gpio3 7 GPIO_ACTIVE_HIGH>;
@@ -187,6 +203,14 @@ &lpuart7 {
 };
 
 /* USB */
+&usbphynop1 {
+	vbus-supply = <&reg_usb1_vbus>;
+};
+
+&usbphynop2 {
+	vbus-supply = <&reg_usb2_vbus>;
+};
+
 &usbotg1 {
 	disable-over-current;
 	dr_mode = "otg";
-- 
2.34.1