linux-kernel - [PATCH 1/4] dt-bindings: soc: actions: Add Actions Semi Owl socinfo binding

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Message-Id: <95105518f61408743d17783099ed9c373a3dfe18.1616178258.git.cristian.ciocaltea@gmail.com>
Date:   Fri, 19 Mar 2021 20:27:59 +0200
From:   Cristian Ciocaltea <cristian.ciocaltea@...il.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Andreas Färber <afaerber@...e.de>,
        Manivannan Sadhasivam <mani@...nel.org>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-actions@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/4] dt-bindings: soc: actions: Add Actions Semi Owl socinfo binding

Add devicetree binding for the Actions Semi Owl SoCs info module.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...il.com>
---
 .../bindings/soc/actions/owl-socinfo.yaml     | 71 +++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/actions/owl-socinfo.yaml

diff --git a/Documentation/devicetree/bindings/soc/actions/owl-socinfo.yaml b/Documentation/devicetree/bindings/soc/actions/owl-socinfo.yaml
new file mode 100644
index 000000000000..3fcb1f584fdf
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/actions/owl-socinfo.yaml
@@ -0,0 +1,71 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/actions/owl-socinfo.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Actions Semi Owl SoC info module
+
+maintainers:
+  - Cristian Ciocaltea <cristian.ciocaltea@...il.com>
+
+description: |
+  Actions Semi Owl SoC info module provides access to various information
+  about the S500, S700 and S900 SoC variants, such as serial number or id.
+
+patternProperties:
+  "^soc(@[0-9a-f]+)?$":
+    type: object
+    properties:
+      compatible:
+        items:
+          - enum:
+              - actions,s500-soc
+              - actions,s700-soc
+              - actions,s900-soc
+          - const: simple-bus
+
+      "#address-cells":
+        enum: [1, 2]
+
+      "#size-cells":
+        enum: [1, 2]
+
+      ranges: true
+
+      actions,serial-number-addrs:
+        description: |
+          Contains the physical addresses in DDR memory where the two parts
+          of the serial number (low & high) can be read from.
+          This is currently supported only on the S500 SoC variant.
+        $ref: /schemas/types.yaml#/definitions/uint32-array
+        minItems: 2
+        maxItems: 2
+
+    required:
+      - compatible
+
+    additionalProperties:
+      type: object
+
+additionalProperties: true
+
+examples:
+  - |
+    / {
+        compatible = "roseapplepi,roseapplepi", "actions,s500";
+        model = "Roseapple Pi";
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        soc {
+            compatible = "actions,s500-soc", "simple-bus";
+            #address-cells = <1>;
+            #size-cells = <1>;
+            ranges;
+            actions,serial-number-addrs = <0x800>, /* S/N Low */
+                                          <0x804>; /* S/N High */
+        };
+    };
+
+...
-- 
2.31.0