[PATCH v2 1/3] dt-bindings: clock: add rk3562 cru bindings

[Kever Yang]

Document the device tree bindings of the rockchip rk3562 SoC
clock and reset unit.

Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
---

Changes in v2:
- remove rockchip,grf info

 .../bindings/clock/rockchip,rk3562-cru.yaml   | 55 +++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/rockchip,rk3562-cru.yaml

diff --git a/Documentation/devicetree/bindings/clock/rockchip,rk3562-cru.yaml b/Documentation/devicetree/bindings/clock/rockchip,rk3562-cru.yaml
new file mode 100644
index 000000000000..36a353f5c42a
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/rockchip,rk3562-cru.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/rockchip,rk3562-cru.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip rk3562 Clock and Reset Control Module
+
+maintainers:
+  - Elaine Zhang <zhangqing at rock-chips.com>
+  - Heiko Stuebner <heiko at sntech.de>
+
+description:
+  The RK3562 clock controller generates the clock and also implements a reset
+  controller for SoC peripherals. For example it provides SCLK_UART2 and
+  PCLK_UART2, as well as SRST_P_UART2 and SRST_S_UART2 for the second UART
+  module.
+
+properties:
+  compatible:
+    const: rockchip,rk3562-cru
+
+  reg:
+    maxItems: 1
+
+  "#clock-cells":
+    const: 1
+
+  "#reset-cells":
+    const: 1
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: xin24m
+      - const: xin32k
+
+required:
+  - compatible
+  - reg
+  - "#clock-cells"
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller at ff100000 {
+      compatible = "rockchip,rk3562-cru";
+      reg = <0xff100000 0x40000>;
+      #clock-cells = <1>;
+      #reset-cells = <1>;
+    };
-- 
2.25.1