From 2407fcb81b566b68512df8ebdc85cd2e7f64bef9 Mon Sep 17 00:00:00 2001
From: Andre Przywara <andre.przywara@arm.com>
Date: Thu, 30 Apr 2020 22:10:54 +0100
Subject: [PATCH] dt-bindings: arm: Add Calxeda system registers json-schema
 binding

The Calxeda system registers are a collection of MMIO register
controlling several more general aspects of the SoC.
Beside for some power management tasks this node is also somewhat
abused as the container for the clock nodes.

Add a binding in DT schema format using json-schema.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
---
 .../bindings/arm/calxeda/hb-sregs.yaml        | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/calxeda/hb-sregs.yaml

diff --git a/Documentation/devicetree/bindings/arm/calxeda/hb-sregs.yaml b/Documentation/devicetree/bindings/arm/calxeda/hb-sregs.yaml
new file mode 100644
index 000000000000..dfdc97083efb
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/calxeda/hb-sregs.yaml
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/calxeda/hb-sregs.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Calxeda Highbank system registers
+
+description: |
+  The Calxeda Highbank system has a block of MMIO registers controlling
+  several generic system aspects. Those can be used to control some power
+  management, they also contain some gate and PLL clocks.
+
+maintainers:
+  - Andre Przywara <andre.przywara@arm.com>
+
+properties:
+  compatible:
+    const: calxeda,hb-sregs
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    type: object
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    sregs@fff3c000 {
+        compatible = "calxeda,hb-sregs";
+        reg = <0xfff3c000 0x1000>;
+
+        clocks {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            osc: oscillator {
+                #clock-cells = <0>;
+                compatible = "fixed-clock";
+                clock-frequency = <33333000>;
+            };
+        };
+    };