dt-bindings: clock: sophgo: add RP gate clocks for SG2042

Add bindings for the gate clocks of RP subsystem for Sophgo SG2042.

Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
Reviewed-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/clock/sophgo,sg2042-rpgate.yaml

@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/sophgo,sg2042-rpgate.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo SG2042 Gate Clock Generator for RP(riscv processors) subsystem
+
+maintainers:
+  - Chen Wang <unicorn_wang@outlook.com>
+
+properties:
+  compatible:
+    const: sophgo,sg2042-rpgate
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Gate clock for RP subsystem
+
+  clock-names:
+    items:
+      - const: rpgate
+
+  '#clock-cells':
+    const: 1
+    description:
+      See <dt-bindings/clock/sophgo,sg2042-rpgate.h> for valid indices.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller@20000000 {
+      compatible = "sophgo,sg2042-rpgate";
+      reg = <0x20000000 0x10000>;
+      clocks = <&clkgen 85>;
+      clock-names = "rpgate";
+      #clock-cells = <1>;
+    };

include/dt-bindings/clock/sophgo,sg2042-rpgate.h

@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
+/*
+ * Copyright (C) 2023 Sophgo Technology Inc. All rights reserved.
+ */
+
+#ifndef __DT_BINDINGS_SOPHGO_SG2042_RPGATE_H__
+#define __DT_BINDINGS_SOPHGO_SG2042_RPGATE_H__
+
+#define GATE_CLK_RXU0			0
+#define GATE_CLK_RXU1			1
+#define GATE_CLK_RXU2			2
+#define GATE_CLK_RXU3			3
+#define GATE_CLK_RXU4			4
+#define GATE_CLK_RXU5			5
+#define GATE_CLK_RXU6			6
+#define GATE_CLK_RXU7			7
+#define GATE_CLK_RXU8			8
+#define GATE_CLK_RXU9			9
+#define GATE_CLK_RXU10			10
+#define GATE_CLK_RXU11			11
+#define GATE_CLK_RXU12			12
+#define GATE_CLK_RXU13			13
+#define GATE_CLK_RXU14			14
+#define GATE_CLK_RXU15			15
+#define GATE_CLK_RXU16			16
+#define GATE_CLK_RXU17			17
+#define GATE_CLK_RXU18			18
+#define GATE_CLK_RXU19			19
+#define GATE_CLK_RXU20			20
+#define GATE_CLK_RXU21			21
+#define GATE_CLK_RXU22			22
+#define GATE_CLK_RXU23			23
+#define GATE_CLK_RXU24			24
+#define GATE_CLK_RXU25			25
+#define GATE_CLK_RXU26			26
+#define GATE_CLK_RXU27			27
+#define GATE_CLK_RXU28			28
+#define GATE_CLK_RXU29			29
+#define GATE_CLK_RXU30			30
+#define GATE_CLK_RXU31			31
+#define GATE_CLK_MP0			32
+#define GATE_CLK_MP1			33
+#define GATE_CLK_MP2			34
+#define GATE_CLK_MP3			35
+#define GATE_CLK_MP4			36
+#define GATE_CLK_MP5			37
+#define GATE_CLK_MP6			38
+#define GATE_CLK_MP7			39
+#define GATE_CLK_MP8			40
+#define GATE_CLK_MP9			41
+#define GATE_CLK_MP10			42
+#define GATE_CLK_MP11			43
+#define GATE_CLK_MP12			44
+#define GATE_CLK_MP13			45
+#define GATE_CLK_MP14			46
+#define GATE_CLK_MP15			47
+
+#endif /* __DT_BINDINGS_SOPHGO_SG2042_RPGATE_H__ */