[PATCH v5 2/6] dt-bindings: phy: renesas,usb2-phy: Document RZ/G2L phy bindings

[Biju Das <biju.das.jz@bp.renesas.com>]

Document USB phy bindings for RZ/G2L SoC.

RZ/G2L USB2.0 phy uses line ctrl register for OTG_ID pin changes. It uses
a different OTG-BC interrupt bit for device recognition. Apart from this,
the PHY reset is controlled by USBPHY control IP and Document reset is a
required property.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
v4->v5:
 * Removed 'properties' and just used 'required' for RZ/G2L SoC.
v3->v4:
 * Removed second reset
 * Added family specific compatible string.
v2->v3
 * Created a new compatible for RZ/G2L as per Geert's suggestion.
 * Added resets required properties for RZ/G2L SoC.
---
 .../devicetree/bindings/phy/renesas,usb2-phy.yaml | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/renesas,usb2-phy.yaml b/Documentation/devicetree/bindings/phy/renesas,usb2-phy.yaml
index d5dc5a3cdceb..3a6e1165419c 100644
--- a/Documentation/devicetree/bindings/phy/renesas,usb2-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/renesas,usb2-phy.yaml
@@ -30,6 +30,11 @@ properties:
               - renesas,usb2-phy-r8a77995 # R-Car D3
           - const: renesas,rcar-gen3-usb2-phy
 
+      - items:
+          - enum:
+              - renesas,usb2-phy-r9a07g044 # RZ/G2{L,LC}
+          - const: renesas,rzg2l-usb2-phy  # RZ/G2L family
+
   reg:
     maxItems: 1
 
@@ -91,6 +96,16 @@ required:
   - clocks
   - '#phy-cells'
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,rzg2l-usb2-phy
+    then:
+      required:
+        - resets
+
 additionalProperties: false
 
 examples:
-- 
2.17.1