dt-bindings: clock: add Amlogic T7 PLL clock controller

Add DT bindings for the PLL clock controller of the Amlogic T7 SoC family.

Signed-off-by: Jian Hu <jian.hu@amlogic.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20251212022619.3072132-2-jian.hu@amlogic.com
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

Author: Jian Hu

Documentation/devicetree/bindings/clock/amlogic,t7-pll-clkc.yaml

@@ -0,0 +1,114 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2024-2025 Amlogic, Inc. All rights reserved
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/amlogic,t7-pll-clkc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic T7 PLL Clock Control Controller
+
+maintainers:
+  - Neil Armstrong <neil.armstrong@linaro.org>
+  - Jerome Brunet <jbrunet@baylibre.com>
+  - Jian Hu <jian.hu@amlogic.com>
+  - Xianwei Zhao <xianwei.zhao@amlogic.com>
+
+properties:
+  compatible:
+    enum:
+      - amlogic,t7-gp0-pll
+      - amlogic,t7-gp1-pll
+      - amlogic,t7-hifi-pll
+      - amlogic,t7-pcie-pll
+      - amlogic,t7-mpll
+      - amlogic,t7-hdmi-pll
+      - amlogic,t7-mclk-pll
+
+  reg:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+
+  clocks:
+    items:
+      - description: mclk pll input oscillator gate
+      - description: oscillator input clock source for mclk_sel_0
+      - description: fixed input clock source for mclk_sel_0
+    minItems: 1
+
+  clock-names:
+    items:
+      - const: in0
+      - const: in1
+      - const: in2
+    minItems: 1
+
+required:
+  - compatible
+  - '#clock-cells'
+  - reg
+  - clocks
+  - clock-names
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: amlogic,t7-mclk-pll
+
+    then:
+      properties:
+        clocks:
+          minItems: 3
+
+        clock-names:
+          minItems: 3
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - amlogic,t7-gp0-pll
+              - amlogic,t7-gp1--pll
+              - amlogic,t7-hifi-pll
+              - amlogic,t7-pcie-pll
+              - amlogic,t7-mpll
+              - amlogic,t7-hdmi-pll
+
+    then:
+      properties:
+        clocks:
+          maxItems: 1
+
+        clock-names:
+          maxItems: 1
+
+additionalProperties: false
+
+examples:
+  - |
+    apb {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        clock-controller@8080 {
+            compatible = "amlogic,t7-gp0-pll";
+            reg = <0 0x8080 0 0x20>;
+            clocks = <&scmi_clk 2>;
+            clock-names = "in0";
+            #clock-cells = <1>;
+        };
+
+        clock-controller@8300 {
+            compatible = "amlogic,t7-mclk-pll";
+            reg = <0 0x8300 0 0x18>;
+            clocks = <&scmi_clk 2>,
+                     <&xtal>,
+                     <&scmi_clk 31>;
+            clock-names = "in0", "in1", "in2";
+            #clock-cells = <1>;
+        };
+    };

include/dt-bindings/clock/amlogic,t7-pll-clkc.h

@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR MIT) */
+/*
+ * Copyright (C) 2024-2025 Amlogic, Inc. All rights reserved
+ */
+
+#ifndef __T7_PLL_CLKC_H
+#define __T7_PLL_CLKC_H
+
+/* GP0 */
+#define CLKID_GP0_PLL_DCO	0
+#define CLKID_GP0_PLL		1
+
+/* GP1 */
+#define CLKID_GP1_PLL_DCO	0
+#define CLKID_GP1_PLL		1
+
+/* HIFI */
+#define CLKID_HIFI_PLL_DCO	0
+#define CLKID_HIFI_PLL		1
+
+/* PCIE */
+#define CLKID_PCIE_PLL_DCO	0
+#define CLKID_PCIE_PLL_DCO_DIV2	1
+#define CLKID_PCIE_PLL_OD	2
+#define CLKID_PCIE_PLL		3
+
+/* MPLL */
+#define CLKID_MPLL_PREDIV	0
+#define CLKID_MPLL0_DIV		1
+#define CLKID_MPLL0		2
+#define CLKID_MPLL1_DIV		3
+#define CLKID_MPLL1		4
+#define CLKID_MPLL2_DIV		5
+#define CLKID_MPLL2		6
+#define CLKID_MPLL3_DIV		7
+#define CLKID_MPLL3		8
+
+/* HDMI */
+#define CLKID_HDMI_PLL_DCO	0
+#define CLKID_HDMI_PLL_OD	1
+#define CLKID_HDMI_PLL		2
+
+/* MCLK */
+#define CLKID_MCLK_PLL_DCO	0
+#define CLKID_MCLK_PRE		1
+#define CLKID_MCLK_PLL		2
+#define CLKID_MCLK_0_SEL	3
+#define CLKID_MCLK_0_DIV2	4
+#define CLKID_MCLK_0_PRE	5
+#define CLKID_MCLK_0		6
+#define CLKID_MCLK_1_SEL	7
+#define CLKID_MCLK_1_DIV2	8
+#define CLKID_MCLK_1_PRE	9
+#define CLKID_MCLK_1		10
+
+#endif /* __T7_PLL_CLKC_H */