[PATCH 1/6] dt-bindings: phy: renesas: Document RZ/G2L USB PHY Control bindings

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

Add device tree binding document for RZ/G2L USB PHY control driver.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 .../phy/renesas,rzg2l-usbphyctrl.yaml         | 50 +++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/renesas,rzg2l-usbphyctrl.yaml

diff --git a/Documentation/devicetree/bindings/phy/renesas,rzg2l-usbphyctrl.yaml b/Documentation/devicetree/bindings/phy/renesas,rzg2l-usbphyctrl.yaml
new file mode 100644
index 000000000000..5fd316a2e79e
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/renesas,rzg2l-usbphyctrl.yaml
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/renesas,rzg2l-usbphyctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/G2L USB2.0 PHY Control
+
+maintainers:
+  - Biju Das <biju.das.jz@bp.renesas.com>
+
+description:
+  The RZ/G2L USB2.0 PHY Control mainly controls reset and power down of the
+  USB/PHY.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - renesas,r9a07g044-usbphyctrl # RZ/G2{L,LC}
+      - const: renesas,rzg2l-usbphyctrl
+
+  reg:
+    maxItems: 1
+
+  '#phy-cells':
+    # see phy-bindings.txt in the same directory
+    const: 1
+    description: |
+      The phandle's argument in the PHY specifier is the phy reset control bit
+      of usb phy control.
+      0 = Port 1 Phy reset
+      1 = Port 2 Phy reset
+    enum: [ 0, 1 ]
+
+required:
+  - compatible
+  - reg
+  - '#phy-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    usbphyctrl@11c40000 {
+        compatible = "renesas,r9a07g044-usbphyctrl",
+                     "renesas,rzg2l-usbphyctrl";
+        reg = <0x11c40000 0x10000>;
+        #phy-cells = <1>;
+    };
-- 
2.17.1