linux-kernel - [PATCH v4 3/5] dt-bindings: usb: usb-device: add usb hub port vbus-supply suppport

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Message-Id: <20250911-v6-16-topic-usb-onboard-dev-v4-3-1af288125d74@pengutronix.de>
Date: Thu, 11 Sep 2025 22:22:44 +0200
From: Marco Felsch <m.felsch@...gutronix.de>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Fabio Estevam <festevam@...il.com>, 
 Matthias Kaehlcke <mka@...omium.org>, Liam Girdwood <lgirdwood@...il.com>, 
 Mark Brown <broonie@...nel.org>
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, 
 devicetree@...r.kernel.org, kernel@...gutronix.de, 
 Marco Felsch <m.felsch@...gutronix.de>
Subject: [PATCH v4 3/5] dt-bindings: usb: usb-device: add usb hub port
 vbus-supply suppport

Some PCB designs don't use the dedicated USB hub port power control GPIO
to control the port VBUS supply. Instead host managed GPIOs are used to
control the VBUS supply.

Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
---
 Documentation/devicetree/bindings/usb/usb-device.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/usb-device.yaml b/Documentation/devicetree/bindings/usb/usb-device.yaml
index 09fceb469f10525e9dcdb91435b142b0d21964b8..2f891a05ab9bca095eb881c5f601ac27ac63b542 100644
--- a/Documentation/devicetree/bindings/usb/usb-device.yaml
+++ b/Documentation/devicetree/bindings/usb/usb-device.yaml
@@ -53,6 +53,12 @@ properties:
   "#size-cells":
     const: 0
 
+  vbus-supply:
+    description: USB hub port VBUS supply.
+      The host managed regulator which controlls the USB hub port VBUS. This
+      regulator is only required if the hub internal control signals aren't
+      used to control the VBUS regulators.
+
 patternProperties:
   "^interface@[0-9a-f]{1,2}(,[0-9a-f]{1,2})$":
     type: object

-- 
2.47.3