dt-bindings: soc: sophgo: Add SG2044 top syscon device

The SG2044 top syscon device provide PLL clock control and some other
misc feature of the SoC.

Add the compatible string for SG2044 top syscon device.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250418020325.421257-2-inochiama@gmail.com
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
Signed-off-by: Chen Wang <wangchen20@iscas.ac.cn>

diff --git a/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2044-top-syscon.yaml b/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2044-top-syscon.yaml
new file mode 100644 (file)
index 0000000..a82cc3c
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2044-top-syscon.yaml
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/sophgo/sophgo,sg2044-top-syscon.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo SG2044 SoC TOP system controller
+
+maintainers:
+  - Inochi Amaoto <inochiama@gmail.com>
+
+description:
+  The Sophgo SG2044 TOP system controller is a hardware block grouping
+  multiple small functions, such as clocks and some other internal
+  function.
+
+properties:
+  compatible:
+    items:
+      - const: sophgo,sg2044-top-syscon
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+    description:
+      See <dt-bindings/clock/sophgo,sg2044-pll.h> for valid clock.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    syscon@50000000 {
+      compatible = "sophgo,sg2044-top-syscon", "syscon";
+      reg = <0x50000000 0x1000>;
+      #clock-cells = <1>;
+      clocks = <&osc>;
+    };

diff --git a/include/dt-bindings/clock/sophgo,sg2044-pll.h b/include/dt-bindings/clock/sophgo,sg2044-pll.h
new file mode 100644 (file)
index 0000000..817d45e
--- /dev/null
+++ b/include/dt-bindings/clock/sophgo,sg2044-pll.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
+/*
+ * Copyright (C) 2024 Inochi Amaoto <inochiama@gmail.com>
+ */
+
+#ifndef __DT_BINDINGS_SOPHGO_SG2044_PLL_H__
+#define __DT_BINDINGS_SOPHGO_SG2044_PLL_H__
+
+#define CLK_FPLL0                      0
+#define CLK_FPLL1                      1
+#define CLK_FPLL2                      2
+#define CLK_DPLL0                      3
+#define CLK_DPLL1                      4
+#define CLK_DPLL2                      5
+#define CLK_DPLL3                      6
+#define CLK_DPLL4                      7
+#define CLK_DPLL5                      8
+#define CLK_DPLL6                      9
+#define CLK_DPLL7                      10
+#define CLK_MPLL0                      11
+#define CLK_MPLL1                      12
+#define CLK_MPLL2                      13
+#define CLK_MPLL3                      14
+#define CLK_MPLL4                      15
+#define CLK_MPLL5                      16
+
+#endif /* __DT_BINDINGS_SOPHGO_SG2044_PLL_H__ */