dt-bindings: clock: sophgo: add clkgen for SG2042

Add bindings for the clock generator of divider/mux and gates working
for other subsystem than 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-clkgen.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/sophgo,sg2042-clkgen.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo SG2042 Clock Generator for divider/mux/gate
+
+maintainers:
+  - Chen Wang <unicorn_wang@outlook.com>
+
+properties:
+  compatible:
+    const: sophgo,sg2042-clkgen
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Main PLL
+      - description: Fixed PLL
+      - description: DDR PLL 0
+      - description: DDR PLL 1
+
+  clock-names:
+    items:
+      - const: mpll
+      - const: fpll
+      - const: dpll0
+      - const: dpll1
+
+  '#clock-cells':
+    const: 1
+    description:
+      See <dt-bindings/clock/sophgo,sg2042-clkgen.h> for valid indices.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller@30012000 {
+      compatible = "sophgo,sg2042-clkgen";
+      reg = <0x30012000 0x1000>;
+      clocks = <&pllclk 0>,
+               <&pllclk 1>,
+               <&pllclk 2>,
+               <&pllclk 3>;
+      clock-names = "mpll",
+                    "fpll",
+                    "dpll0",
+                    "dpll1";
+      #clock-cells = <1>;
+    };

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

+/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
+/*
+ * Copyright (C) 2023 Sophgo Technology Inc. All rights reserved.
+ */
+
+#ifndef __DT_BINDINGS_SOPHGO_SG2042_CLKGEN_H__
+#define __DT_BINDINGS_SOPHGO_SG2042_CLKGEN_H__
+
+#define DIV_CLK_MPLL_RP_CPU_NORMAL_0	0
+#define DIV_CLK_MPLL_AXI_DDR_0		1
+#define DIV_CLK_FPLL_DDR01_1		2
+#define DIV_CLK_FPLL_DDR23_1		3
+#define DIV_CLK_FPLL_RP_CPU_NORMAL_1	4
+#define DIV_CLK_FPLL_50M_A53		5
+#define DIV_CLK_FPLL_TOP_RP_CMN_DIV2	6
+#define DIV_CLK_FPLL_UART_500M		7
+#define DIV_CLK_FPLL_AHB_LPC		8
+#define DIV_CLK_FPLL_EFUSE		9
+#define DIV_CLK_FPLL_TX_ETH0		10
+#define DIV_CLK_FPLL_PTP_REF_I_ETH0	11
+#define DIV_CLK_FPLL_REF_ETH0		12
+#define DIV_CLK_FPLL_EMMC		13
+#define DIV_CLK_FPLL_SD			14
+#define DIV_CLK_FPLL_TOP_AXI0		15
+#define DIV_CLK_FPLL_TOP_AXI_HSPERI	16
+#define DIV_CLK_FPLL_AXI_DDR_1		17
+#define DIV_CLK_FPLL_DIV_TIMER1		18
+#define DIV_CLK_FPLL_DIV_TIMER2		19
+#define DIV_CLK_FPLL_DIV_TIMER3		20
+#define DIV_CLK_FPLL_DIV_TIMER4		21
+#define DIV_CLK_FPLL_DIV_TIMER5		22
+#define DIV_CLK_FPLL_DIV_TIMER6		23
+#define DIV_CLK_FPLL_DIV_TIMER7		24
+#define DIV_CLK_FPLL_DIV_TIMER8		25
+#define DIV_CLK_FPLL_100K_EMMC		26
+#define DIV_CLK_FPLL_100K_SD		27
+#define DIV_CLK_FPLL_GPIO_DB		28
+#define DIV_CLK_DPLL0_DDR01_0		29
+#define DIV_CLK_DPLL1_DDR23_0		30
+
+#define GATE_CLK_RP_CPU_NORMAL_DIV0	31
+#define GATE_CLK_AXI_DDR_DIV0		32
+
+#define GATE_CLK_RP_CPU_NORMAL_DIV1	33
+#define GATE_CLK_A53_50M		34
+#define GATE_CLK_TOP_RP_CMN_DIV2	35
+#define GATE_CLK_HSDMA			36
+#define GATE_CLK_EMMC_100M		37
+#define GATE_CLK_SD_100M		38
+#define GATE_CLK_TX_ETH0		39
+#define GATE_CLK_PTP_REF_I_ETH0		40
+#define GATE_CLK_REF_ETH0		41
+#define GATE_CLK_UART_500M		42
+#define GATE_CLK_EFUSE			43
+
+#define GATE_CLK_AHB_LPC		44
+#define GATE_CLK_AHB_ROM		45
+#define GATE_CLK_AHB_SF			46
+
+#define GATE_CLK_APB_UART		47
+#define GATE_CLK_APB_TIMER		48
+#define GATE_CLK_APB_EFUSE		49
+#define GATE_CLK_APB_GPIO		50
+#define GATE_CLK_APB_GPIO_INTR		51
+#define GATE_CLK_APB_SPI		52
+#define GATE_CLK_APB_I2C		53
+#define GATE_CLK_APB_WDT		54
+#define GATE_CLK_APB_PWM		55
+#define GATE_CLK_APB_RTC		56
+
+#define GATE_CLK_AXI_PCIE0		57
+#define GATE_CLK_AXI_PCIE1		58
+#define GATE_CLK_SYSDMA_AXI		59
+#define GATE_CLK_AXI_DBG_I2C		60
+#define GATE_CLK_AXI_SRAM		61
+#define GATE_CLK_AXI_ETH0		62
+#define GATE_CLK_AXI_EMMC		63
+#define GATE_CLK_AXI_SD			64
+#define GATE_CLK_TOP_AXI0		65
+#define GATE_CLK_TOP_AXI_HSPERI		66
+
+#define GATE_CLK_TIMER1			67
+#define GATE_CLK_TIMER2			68
+#define GATE_CLK_TIMER3			69
+#define GATE_CLK_TIMER4			70
+#define GATE_CLK_TIMER5			71
+#define GATE_CLK_TIMER6			72
+#define GATE_CLK_TIMER7			73
+#define GATE_CLK_TIMER8			74
+#define GATE_CLK_100K_EMMC		75
+#define GATE_CLK_100K_SD		76
+#define GATE_CLK_GPIO_DB		77
+
+#define GATE_CLK_AXI_DDR_DIV1		78
+#define GATE_CLK_DDR01_DIV1		79
+#define GATE_CLK_DDR23_DIV1		80
+
+#define GATE_CLK_DDR01_DIV0		81
+#define GATE_CLK_DDR23_DIV0		82
+
+#define GATE_CLK_DDR01			83
+#define GATE_CLK_DDR23			84
+#define GATE_CLK_RP_CPU_NORMAL		85
+#define GATE_CLK_AXI_DDR		86
+
+#define MUX_CLK_DDR01			87
+#define MUX_CLK_DDR23			88
+#define MUX_CLK_RP_CPU_NORMAL		89
+#define MUX_CLK_AXI_DDR			90
+
+#endif /* __DT_BINDINGS_SOPHGO_SG2042_CLKGEN_H__ */