[PATCH v2 1/4] dt-bindings: mfd: sprd: Add bindings for ums512 global registers

[Chunyan Zhang <zhang.lyra@gmail.com>]

From: Chunyan Zhang <chunyan.zhang@unisoc.com>

Add bindings for Unisoc system global register which provide register map
for clocks.

Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
---
 .../bindings/mfd/sprd,ums512-glbreg.yaml      | 67 +++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/sprd,ums512-glbreg.yaml

diff --git a/Documentation/devicetree/bindings/mfd/sprd,ums512-glbreg.yaml b/Documentation/devicetree/bindings/mfd/sprd,ums512-glbreg.yaml
new file mode 100644
index 000000000000..cf9dad06bb4e
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/sprd,ums512-glbreg.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/sprd,ums512-glbreg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Unisoc System Global Register Device Tree Bindings
+
+maintainers:
+  - Orson Zhai <orsonzhai@gmail.com>
+  - Baolin Wang <baolin.wang7@gmail.com>
+  - Chunyan Zhang <zhang.lyra@gmail.com>
+
+description:
+  Unisoc system global registers provide register map
+  for clocks and some multimedia modules of the SoC.
+
+properties:
+  "#address-cells": true
+  "#size-cells": true
+
+  compatible:
+    items:
+      - const: sprd,ums512-glbregs
+      - const: syscon
+      - const: simple-mfd
+
+  ranges:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+patternProperties:
+  "^.*@[0-9a-f]+$":
+    # Child node
+    type: object
+    $ref: "../clock/sprd,ums512-clk.yaml"
+    description:
+      Clock controller for the SoC clocks. This child node definition
+      should follow the bindings specified in
+      Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml.
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+  - ranges
+
+additionalProperties: false
+
+examples:
+  - |
+    ap_apb_regs: syscon@71000000 {
+      compatible = "sprd,ums512-glbregs", "syscon", "simple-mfd";
+      reg = <0x71000000 0x3000>;
+      #address-cells = <1>;
+      #size-cells = <1>;
+      ranges = <0 0x71000000 0x3000>;
+
+      apahb_gate: clock-controller@0 {
+        compatible = "sprd,ums512-apahb-gate";
+        reg = <0x0 0x2000>;
+        #clock-cells = <1>;
+      };
+    };
-- 
2.25.1