linux-kernel - [PATCH] dt-bindings: usb: renesas,rzg3e-xhci: Add RZ/V2H(P) and RZ/V2N support

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Message-ID: <20251101042440.648321-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Sat,  1 Nov 2025 04:24:40 +0000
From: Prabhakar <prabhakar.csengg@...il.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Magnus Damm <magnus.damm@...il.com>,
	Biju Das <biju.das.jz@...renesas.com>
Cc: linux-usb@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH] dt-bindings: usb: renesas,rzg3e-xhci: Add RZ/V2H(P) and RZ/V2N support

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Add device tree binding support for the USB3.2 Gen2 controller on Renesas
RZ/V2H(P) and RZ/V2N SoCs. The USB3.2 IP on these SoCs is identical to
that found on the RZ/G3E SoC.

Add new compatible strings "renesas,r9a09g056-xhci" for RZ/V2N and
"renesas,r9a09g057-xhci" for RZ/V2H(P). Both variants use
"renesas,r9a09g047-xhci" as a fallback compatible to indicate hardware
compatibility with the RZ/G3E implementation.

Update the title to be more generic as it now covers multiple SoC
families beyond just RZ/G3E.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 .../devicetree/bindings/usb/renesas,rzg3e-xhci.yaml  | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/renesas,rzg3e-xhci.yaml b/Documentation/devicetree/bindings/usb/renesas,rzg3e-xhci.yaml
index 98260f9fb442..3f4b09e48ce0 100644
--- a/Documentation/devicetree/bindings/usb/renesas,rzg3e-xhci.yaml
+++ b/Documentation/devicetree/bindings/usb/renesas,rzg3e-xhci.yaml
@@ -4,14 +4,22 @@
 $id: http://devicetree.org/schemas/usb/renesas,rzg3e-xhci.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Renesas RZ/G3E USB 3.2 Gen2 Host controller
+title: Renesas USB 3.2 Gen2 Host controller
 
 maintainers:
   - Biju Das <biju.das.jz@...renesas.com>
 
 properties:
   compatible:
-    const: renesas,r9a09g047-xhci
+    oneOf:
+      - items:
+          - enum:
+              - renesas,r9a09g056-xhci # RZ/V2N
+              - renesas,r9a09g057-xhci # RZ/V2H(P)
+          - const: renesas,r9a09g047-xhci
+
+      - items:
+          - const: renesas,r9a09g047-xhci # RZ/G3E
 
   reg:
     maxItems: 1
-- 
2.43.0