linux-kernel - [PATCH v2 1/2] dt-bindings: reset: Document RZ/V2H(P) USB2PHY Control

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Message-ID: <20250305123915.341589-2-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Wed,  5 Mar 2025 12:39:13 +0000
From: Prabhakar <prabhakar.csengg@...il.com>
To: Philipp Zabel <p.zabel@...gutronix.de>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Magnus Damm <magnus.damm@...il.com>
Cc: 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 v2 1/2] dt-bindings: reset: Document RZ/V2H(P) USB2PHY Control

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

Add device tree binding document for the Renesas RZ/V2H(P) USB2PHY Control
Device. It mainly controls reset and power down of the USB2.0 PHY (for
both host and function).

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 .../reset/renesas,rzv2h-usb2phy-ctrl.yaml     | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/renesas,rzv2h-usb2phy-ctrl.yaml

diff --git a/Documentation/devicetree/bindings/reset/renesas,rzv2h-usb2phy-ctrl.yaml b/Documentation/devicetree/bindings/reset/renesas,rzv2h-usb2phy-ctrl.yaml
new file mode 100644
index 000000000000..ed156a1d3eb3
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/renesas,rzv2h-usb2phy-ctrl.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/renesas,rzv2h-usb2phy-ctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/V2H(P) USB2PHY Control
+
+maintainers:
+  - Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
+
+description:
+  The RZ/V2H(P) USB2PHY Control mainly controls reset and power down of the
+  USB2.0 PHY.
+
+properties:
+  compatible:
+    const: renesas,r9a09g057-usb2phy-ctrl  # RZ/V2H(P)
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  '#reset-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - resets
+  - power-domains
+  - '#reset-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/renesas,r9a09g057-cpg.h>
+
+    usbphy-ctrl@...30000 {
+        compatible = "renesas,r9a09g057-usb2phy-ctrl";
+        reg = <0x15830000 0x10000>;
+        clocks = <&cpg CPG_MOD 0xb6>;
+        resets = <&cpg 0xaf>;
+        power-domains = <&cpg>;
+        #reset-cells = <0>;
+    };
-- 
2.43.0