linux-kernel - [PATCH v3 04/21] dt-bindings: reset: renesas,rzv2h-usb2phy: Document VBUS

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Message-ID: <8fba0b7235bd398d41329fd087d68f7e98bbbaca.1762773720.git.tommaso.merciai.xr@bp.renesas.com>
Date: Mon, 10 Nov 2025 13:08:04 +0100
From: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
To: tomm.merciai@...il.com
Cc: linux-renesas-soc@...r.kernel.org,
	biju.das.jz@...renesas.com,
	Tommaso Merciai <tommaso.merciai.xr@...renesas.com>,
	Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Peter Rosin <peda@...ntia.se>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-phy@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v3 04/21] dt-bindings: reset: renesas,rzv2h-usb2phy: Document VBUS_SEL mux

Document the 'mux-controller' child node in the Renesas RZ/V2H(P)
USB2PHY reset binding to support describing the USB VBUS_SEL
multiplexer as a mux-controller.

This is required to properly configure the USB PHY VBUS source on
RZ/V2H(P), RZ/G3E SoCs.

Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
---
v2->v3:
 - Manipulate mux-controller as an internal node.
 - Improved commit body.

v1->v2:
 - New patch

 .../bindings/reset/renesas,rzv2h-usb2phy-reset.yaml   | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/devicetree/bindings/reset/renesas,rzv2h-usb2phy-reset.yaml b/Documentation/devicetree/bindings/reset/renesas,rzv2h-usb2phy-reset.yaml
index c1b800a10b53..03da74ff2d08 100644
--- a/Documentation/devicetree/bindings/reset/renesas,rzv2h-usb2phy-reset.yaml
+++ b/Documentation/devicetree/bindings/reset/renesas,rzv2h-usb2phy-reset.yaml
@@ -37,6 +37,12 @@ properties:
   '#reset-cells':
     const: 0
 
+  mux-controller:
+    $ref: /schemas/mux/mux-controller.yaml#
+    description: Mux controller for USB VBUS source selection.
+    type: object
+    unevaluatedProperties: false
+
 required:
   - compatible
   - reg
@@ -44,6 +50,7 @@ required:
   - resets
   - power-domains
   - '#reset-cells'
+  - mux-controller
 
 additionalProperties: false
 
@@ -58,4 +65,8 @@ examples:
         resets = <&cpg 0xaf>;
         power-domains = <&cpg>;
         #reset-cells = <0>;
+
+        mux-controller {
+          #mux-state-cells = <1>;
+        };
     };
-- 
2.43.0