dt-binding: clock: Document rockchip,rv1106-cru bindings

Document the device tree bindings of the rockchip Rv1106 SoC
clock driver in
Documentation/devicetree/bindings/clock/rockchip,rv1106-cru.yaml.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Change-Id: Ide494c03b439ef0e3b88f1cfa6ee9b263b172f3f

Documentation/devicetree/bindings/clock/rockchip,rv1106-cru.yaml

@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/rockchip,rv1106-cru.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ROCKCHIP rv1106 Family Clock Control Module Binding
+
+maintainers:
+  - Elaine Zhang <zhangqing@rock-chips.com>
+  - Heiko Stuebner <heiko@sntech.de>
+
+description: |
+  The RV1106 clock controller generates the clock and also implements a
+  reset controller for SoC peripherals.
+  (examples: provide SCLK_UART2\PCLK_UART2 and SRST_P_UART2\SRST_S_UART2 for UART module)
+  Each clock is assigned an identifier and client nodes can use this identifier
+  to specify the clock which they consume. All available clocks are defined as
+  preprocessor macros in the dt-bindings/clock/rv1106-cru.h headers and can be
+  used in device tree sources.
+
+properties:
+  compatible:
+    enum:
+      - rockchip,rv1106-cru
+
+  reg:
+    maxItems: 1
+
+  "#clock-cells":
+    const: 1
+
+  "#reset-cells":
+    const: 1
+
+  clocks: true
+
+  assigned-clocks:
+    minItems: 1
+
+  assigned-clock-parents:
+    minItems: 1
+
+  assigned-clock-rates:
+    minItems: 1
+
+required:
+  - compatible
+  - reg
+  - "#clock-cells"
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  # Clock Control Module node:
+  - |
+    cru: clock-controller@ff3a0000 {
+      compatible = "rockchip,rv1106-cru";
+      reg = <0xff3a0000 0x20000>;
+      #clock-cells = <1>;
+      #reset-cells = <1>;
+    };