From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.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@bp.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

On Tue, Aug 05, 2025 at 01:25:25PM +0100, Prabhakar wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.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@bp.renesas.com>

Acked-by: Conor Dooley <conor.dooley@microchip.com>