dt-bindings: clock: Add bindings for SP7021 clock driver

Add documentation to describe Sunplus SP7021 clock driver bindings.
Signed-off-by: Qin Jian <qinjian@cqplus1.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/clock/sunplus,sp7021-clkc.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/sunplus,sp7021-clkc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus SP7021 SoC Clock Controller
+
+maintainers:
+  - Qin Jian <qinjian@cqplus1.com>
+
+properties:
+  compatible:
+    const: sunplus,sp7021-clkc
+
+  reg:
+    maxItems: 3
+
+  clocks:
+    maxItems: 1
+
+  "#clock-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - "#clock-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    extclk: osc0 {
+      compatible = "fixed-clock";
+      #clock-cells = <0>;
+      clock-frequency = <27000000>;
+      clock-output-names = "extclk";
+    };
+
+    clkc: clock-controller@9c000004 {
+      compatible = "sunplus,sp7021-clkc";
+      reg = <0x9c000004 0x28>,
+            <0x9c000200 0x44>,
+            <0x9c000268 0x08>;
+      clocks = <&extclk>;
+      #clock-cells = <1>;
+    };
+
+...

MAINTAINERS

@@ -2831,8 +2831,10 @@ L:	linux-arm-kernel@lists.infradead.org (moderated for mon-subscribers)
 S:	Maintained
 W:	https://sunplus-tibbo.atlassian.net/wiki/spaces/doc/overview
 F:	Documentation/devicetree/bindings/arm/sunplus,sp7021.yaml
+F:	Documentation/devicetree/bindings/clock/sunplus,sp7021-clkc.yaml
 F:	Documentation/devicetree/bindings/reset/sunplus,reset.yaml
 F:	drivers/reset/reset-sunplus.c
+F:	include/dt-bindings/clock/sunplus,sp7021-clkc.h
 F:	include/dt-bindings/reset/sunplus,sp7021-reset.h
 
 ARM/Synaptics SoC support

include/dt-bindings/clock/sunplus,sp7021-clkc.h

+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (C) Sunplus Technology Co., Ltd.
+ *       All rights reserved.
+ */
+#ifndef _DT_BINDINGS_CLOCK_SUNPLUS_SP7021_H
+#define _DT_BINDINGS_CLOCK_SUNPLUS_SP7021_H
+
+/* gates */
+#define CLK_RTC         0
+#define CLK_OTPRX       1
+#define CLK_NOC         2
+#define CLK_BR          3
+#define CLK_SPIFL       4
+#define CLK_PERI0       5
+#define CLK_PERI1       6
+#define CLK_STC0        7
+#define CLK_STC_AV0     8
+#define CLK_STC_AV1     9
+#define CLK_STC_AV2     10
+#define CLK_UA0         11
+#define CLK_UA1         12
+#define CLK_UA2         13
+#define CLK_UA3         14
+#define CLK_UA4         15
+#define CLK_HWUA        16
+#define CLK_DDC0        17
+#define CLK_UADMA       18
+#define CLK_CBDMA0      19
+#define CLK_CBDMA1      20
+#define CLK_SPI_COMBO_0 21
+#define CLK_SPI_COMBO_1 22
+#define CLK_SPI_COMBO_2 23
+#define CLK_SPI_COMBO_3 24
+#define CLK_AUD         25
+#define CLK_USBC0       26
+#define CLK_USBC1       27
+#define CLK_UPHY0       28
+#define CLK_UPHY1       29
+#define CLK_I2CM0       30
+#define CLK_I2CM1       31
+#define CLK_I2CM2       32
+#define CLK_I2CM3       33
+#define CLK_PMC         34
+#define CLK_CARD_CTL0   35
+#define CLK_CARD_CTL1   36
+#define CLK_CARD_CTL4   37
+#define CLK_BCH         38
+#define CLK_DDFCH       39
+#define CLK_CSIIW0      40
+#define CLK_CSIIW1      41
+#define CLK_MIPICSI0    42
+#define CLK_MIPICSI1    43
+#define CLK_HDMI_TX     44
+#define CLK_VPOST       45
+#define CLK_TGEN        46
+#define CLK_DMIX        47
+#define CLK_TCON        48
+#define CLK_GPIO        49
+#define CLK_MAILBOX     50
+#define CLK_SPIND       51
+#define CLK_I2C2CBUS    52
+#define CLK_SEC         53
+#define CLK_DVE         54
+#define CLK_GPOST0      55
+#define CLK_OSD0        56
+#define CLK_DISP_PWM    57
+#define CLK_UADBG       58
+#define CLK_FIO_CTL     59
+#define CLK_FPGA        60
+#define CLK_L2SW        61
+#define CLK_ICM         62
+#define CLK_AXI_GLOBAL  63
+
+/* plls */
+#define PLL_A           64
+#define PLL_E           65
+#define PLL_E_2P5       66
+#define PLL_E_25        67
+#define PLL_E_112P5     68
+#define PLL_F           69
+#define PLL_TV          70
+#define PLL_TV_A        71
+#define PLL_SYS         72
+
+#define CLK_MAX         73
+
+#endif