linux-kernel - [PATCH v6 03/14] dt-bindings: reset: renesas,rzv2h-usb2phy: Add '#mux-state-cells' property

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <d37670a6c5ace61ce9e9cbf79100960de44e7551.1766405010.git.tommaso.merciai.xr@bp.renesas.com>
Date: Mon, 22 Dec 2025 14:43:37 +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>,
	Peter Rosin <peda@...ntia.se>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Vinod Koul <vkoul@...nel.org>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Uwe Kleine-König <ukleinek@...nel.org>,
	Sebastian Reichel <sebastian.reichel@...labora.com>,
	Georgi Djakov <djakov@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Arnd Bergmann <arnd@...db.de>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-phy@...ts.infradead.org,
	Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>
Subject: [PATCH v6 03/14] dt-bindings: reset: renesas,rzv2h-usb2phy: Add '#mux-state-cells' property

Add the '#mux-state-cells' property to support describing the USB VBUS_SEL
multiplexer as a mux-controller in the Renesas RZ/V2H(P) USB2PHY binding.

The mux-controller cannot be integrated into the parent USB2PHY node
because the VBUS source selector is part of a separate hardware block,
not the USB2PHY block itself.

This is required to properly configure USB PHY power selection on
RZ/V2H(P) and RZ/G3E SoCs.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
---
v5->v6:
 - Collected KKrzysztof tag

v4->v5:
 - No changes

v3->v4:
 - Switch back to v2 implementation.
 - Improve commit body.

v2->v3:
 - Manipulate mux-controller as an internal node.
 - Improved commit body.

v1->v2:
 - New patch

 .../bindings/reset/renesas,rzv2h-usb2phy-reset.yaml          | 5 +++++
 1 file changed, 5 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..7ed0980b9ee1 100644
--- a/Documentation/devicetree/bindings/reset/renesas,rzv2h-usb2phy-reset.yaml
+++ b/Documentation/devicetree/bindings/reset/renesas,rzv2h-usb2phy-reset.yaml
@@ -37,6 +37,9 @@ properties:
   '#reset-cells':
     const: 0
 
+  '#mux-state-cells':
+    const: 1
+
 required:
   - compatible
   - reg
@@ -44,6 +47,7 @@ required:
   - resets
   - power-domains
   - '#reset-cells'
+  - '#mux-state-cells'
 
 additionalProperties: false
 
@@ -58,4 +62,5 @@ examples:
         resets = <&cpg 0xaf>;
         power-domains = <&cpg>;
         #reset-cells = <0>;
+        #mux-state-cells = <1>;
     };
-- 
2.43.0