linux-kernel - [PATCH 1/5] dt-bindings: phy: renesas,usb2-phy: Add RZ/T2H and RZ/N2H support

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Message-ID: <20250805122529.2566580-2-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Tue,  5 Aug 2025 13:25:25 +0100
From: Prabhakar <prabhakar.csengg@...il.com>
To: 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>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>
Cc: linux-phy@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH 1/5] dt-bindings: phy: renesas,usb2-phy: Add RZ/T2H and RZ/N2H support

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

Document the USB2 PHY controller for the Renesas RZ/T2H (r9a09g077) and
RZ/N2H (r9a09g087) SoCs. These SoCs share the same PHY block, which is
similar to the one on RZ/G2L but differs in clocks, resets, and register
bits. To account for these differences, a new compatible string
`renesas,usb2-phy-r9a09g077` is introduced.

The RZ/N2H SoC uses the same PHY as RZ/T2H, so it reuses the RZ/T2H
compatible string as a fallback.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 .../bindings/phy/renesas,usb2-phy.yaml          | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/renesas,usb2-phy.yaml b/Documentation/devicetree/bindings/phy/renesas,usb2-phy.yaml
index f45c5f039ae8..179cb4bfc424 100644
--- a/Documentation/devicetree/bindings/phy/renesas,usb2-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/renesas,usb2-phy.yaml
@@ -44,6 +44,12 @@ properties:
           - const: renesas,usb2-phy-r9a09g056 # RZ/V2N
           - const: renesas,usb2-phy-r9a09g057
 
+      - const: renesas,usb2-phy-r9a09g077 # RZ/T2H
+
+      - items:
+          - const: renesas,usb2-phy-r9a09g087 # RZ/N2H
+          - const: renesas,usb2-phy-r9a09g077
+
   reg:
     maxItems: 1
 
@@ -120,6 +126,17 @@ allOf:
       required:
         - resets
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,usb2-phy-r9a09g077
+    then:
+      properties:
+        clocks:
+          minItems: 2
+        resets: false
+
 additionalProperties: false
 
 examples:
-- 
2.50.1