linux-kernel - [RFC 1/3] dt-bindings: arm: Add document for SCMI Virtio backend device

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Date:   Thu, 9 Jun 2022 12:49:54 +0530
From:   Neeraj Upadhyay <quic_neeraju@...cinc.com>
To:     <mst@...hat.com>, <jasowang@...hat.com>, <sudeep.holla@....com>,
        <cristian.marussi@....com>
CC:     <quic_sramana@...cinc.com>, <vincent.guittot@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>, <kvm@...r.kernel.org>,
        <virtualization@...ts.linux-foundation.org>,
        <linux-kernel@...r.kernel.org>,
        Neeraj Upadhyay <quic_neeraju@...cinc.com>
Subject: [RFC 1/3] dt-bindings: arm: Add document for SCMI Virtio backend device

Document the properties for ARM SCMI Virtio backend device
node.

Signed-off-by: Neeraj Upadhyay <quic_neeraju@...cinc.com>
---
 .../firmware/arm,scmi-vio-backend.yaml        | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/firmware/arm,scmi-vio-backend.yaml

diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi-vio-backend.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi-vio-backend.yaml
new file mode 100644
index 000000000000..c95d4e093a3c
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/arm,scmi-vio-backend.yaml
@@ -0,0 +1,85 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/firmware/arm,scmi-vio-backend.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: System Control and Management Interface (SCMI) Virtio backend bindings
+
+maintainers:
+  - Neeraj Upadhyay <quic_neeraju@...cinc.com>
+
+description: |
+  This binding defines the interface for configuring the ARM SCMI Virtio
+  backend using device tree.
+
+properties:
+  $nodename:
+    const: scmi-vio-backend
+
+  compatible:
+    const: arm,scmi-vio-backend
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+  protocol@11:
+    type: object
+    properties:
+      reg:
+        const: 0x11
+
+  protocol@13:
+    type: object
+    properties:
+      reg:
+        const: 0x13
+
+  protocol@14:
+    type: object
+    properties:
+      reg:
+        const: 0x14
+
+  protocol@15:
+    type: object
+    properties:
+      reg:
+        const: 0x15
+
+  protocol@16:
+    type: object
+    properties:
+      reg:
+        const: 0x16
+
+  protocol@17:
+    type: object
+    properties:
+      reg:
+        const: 0x17
+
+required:
+  - compatible
+
+examples:
+  - |
+    firmware {
+        scmi-vio-backend {
+            compatible = "arm,scmi-vio-backend";
+
+            scmi_vio_backend_clk: protocol@14 {
+                reg = <0x14>;
+            };
+
+            scmi_vio_backend_voltage: protocol@17 {
+                reg = <0x17>;
+            };
+        };
+    };
+
+...
-- 
2.17.1