linux-kernel - [PATCH v6 1/3] dt-bindings: reset: microchip sparx5 reset driver bindings

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Message-ID: <20210225095005.1510846-2-steen.hegelund@microchip.com>
Date:   Thu, 25 Feb 2021 10:50:03 +0100
From:   Steen Hegelund <steen.hegelund@...rochip.com>
To:     Philipp Zabel <p.zabel@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>
CC:     Steen Hegelund <steen.hegelund@...rochip.com>,
        Andrew Lunn <andrew@...n.ch>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Gregory Clement <gregory.clement@...tlin.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>
Subject: [PATCH v6 1/3] dt-bindings: reset: microchip sparx5 reset driver bindings

Document the Sparx5 reset device driver bindings

The driver uses a syscon and an IO range on sparx5 for access to
the reset control and the reset status.

Signed-off-by: Steen Hegelund <steen.hegelund@...rochip.com>
---
 .../bindings/reset/microchip,rst.yaml         | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/microchip,rst.yaml

diff --git a/Documentation/devicetree/bindings/reset/microchip,rst.yaml b/Documentation/devicetree/bindings/reset/microchip,rst.yaml
new file mode 100644
index 000000000000..370579aeeca1
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/microchip,rst.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/reset/microchip,rst.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Microchip Sparx5 Switch Reset Controller
+
+maintainers:
+  - Steen Hegelund <steen.hegelund@...rochip.com>
+  - Lars Povlsen <lars.povlsen@...rochip.com>
+
+description: |
+  The Microchip Sparx5 Switch provides reset control and implements the following
+  functions
+    - One Time Switch Core Reset (Soft Reset)
+
+properties:
+  $nodename:
+    pattern: "^reset-controller@[0-9a-f]+$"
+
+  compatible:
+    const: microchip,sparx5-switch-reset
+
+  reg:
+    items:
+      - description: global control block registers
+
+  reg-names:
+    items:
+      - const: gcb
+
+  "#reset-cells":
+    const: 1
+
+  cpu-syscon:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+    description: syscon used to access CPU reset
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - "#reset-cells"
+  - cpu-syscon
+
+additionalProperties: false
+
+examples:
+  - |
+    reset: reset-controller@...10008 {
+        compatible = "microchip,sparx5-switch-reset";
+        reg = <0x11010008 0x4>;
+        reg-names = "gcb";
+        #reset-cells = <1>;
+        cpu-syscon = <&cpu_ctrl>;
+    };
+
-- 
2.30.0