linux-kernel - [PATCH 02/19] dt-bindings: clock: Add Amlogic A4 PLL clock controller

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Message-Id: <20250930-a4_a5_add_clock_driver-v1-2-a9acf7951589@amlogic.com>
Date: Tue, 30 Sep 2025 17:37:15 +0800
From: Chuan Liu via B4 Relay <devnull+chuan.liu.amlogic.com@...nel.org>
To: Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Jerome Brunet <jbrunet@...libre.com>, Kevin Hilman <khilman@...libre.com>, 
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc: linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-amlogic@...ts.infradead.org, 
 linux-arm-kernel@...ts.infradead.org, 
 Xianwei Zhao <xianwei.zhao@...ogic.com>, Chuan Liu <chuan.liu@...ogic.com>
Subject: [PATCH 02/19] dt-bindings: clock: Add Amlogic A4 PLL clock
 controller

From: Chuan Liu <chuan.liu@...ogic.com>

Add the PLL clock controller dt-bindings for Amlogic A4 SoC family.

Signed-off-by: Chuan Liu <chuan.liu@...ogic.com>
---
 .../bindings/clock/amlogic,a4-pll-clkc.yaml        | 61 ++++++++++++++++++++++
 include/dt-bindings/clock/amlogic,a4-pll-clkc.h    | 15 ++++++
 2 files changed, 76 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/amlogic,a4-pll-clkc.yaml b/Documentation/devicetree/bindings/clock/amlogic,a4-pll-clkc.yaml
new file mode 100644
index 000000000000..dafad7bd4407
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/amlogic,a4-pll-clkc.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2025 Amlogic, Inc. All rights reserved
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/amlogic,a4-pll-clkc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic A4 series PLL Clock Controller
+
+maintainers:
+  - Neil Armstrong <neil.armstrong@...aro.org>
+  - Jerome Brunet <jbrunet@...libre.com>
+  - Chuan Liu <chuan.liu@...ogic.com>
+  - Xianwei Zhao <xianwei.zhao@...ogic.com>
+
+properties:
+  compatible:
+    const: amlogic,a4-pll-clkc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: input oscillator
+      - description: input fix pll
+
+  clock-names:
+    items:
+      - const: xtal
+      - const: fix
+
+  "#clock-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - "#clock-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/amlogic,a4-scmi-clkc.h>
+    apb {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        clock-controller@...0 {
+            compatible = "amlogic,a4-pll-clkc";
+            reg = <0x0 0x8000 0x0 0x110>;
+            clocks = <&xtal>,
+                     <&scmi_clk CLKID_FIXED_PLL>;
+            clock-names = "xtal",
+                          "fix";
+            #clock-cells = <1>;
+        };
+    };
diff --git a/include/dt-bindings/clock/amlogic,a4-pll-clkc.h b/include/dt-bindings/clock/amlogic,a4-pll-clkc.h
new file mode 100644
index 000000000000..0950dcd68e0a
--- /dev/null
+++ b/include/dt-bindings/clock/amlogic,a4-pll-clkc.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR MIT) */
+/*
+ * Copyright (c) 2025 Amlogic, Inc. All rights reserved.
+ * Author: Chuan Liu <chuan.liu@...ogic.com>
+ */
+
+#ifndef _DT_BINDINGS_CLOCK_AMLOGIC_A4_PLL_CLKC_H
+#define _DT_BINDINGS_CLOCK_AMLOGIC_A4_PLL_CLKC_H
+
+#define CLKID_GP0_PLL_DCO			0
+#define CLKID_GP0_PLL				1
+#define CLKID_HIFI_PLL_DCO			2
+#define CLKID_HIFI_PLL				3
+
+#endif  /* _DT_BINDINGS_CLOCK_AMLOGIC_A4_PLL_CLKC_H */

-- 
2.42.0