[PATCH v3 2/4] dt-bindings: clock: sun55i-a523-ccu: Add A523 CPU CCU clock controller

[Andre Przywara <andre.przywara@arm.com>]

There are four clock controllers in the A523 SoC, but only three are
described in the DT binding so far.

Add a description for the CPU CCU, which provides separate clocks for
the two CPU clusters and the DSU interconnect.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 .../clock/allwinner,sun55i-a523-ccu.yaml      | 38 ++++++++++++++++++-
 .../dt-bindings/clock/sun55i-a523-cpu-ccu.h   | 13 +++++++
 2 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 include/dt-bindings/clock/sun55i-a523-cpu-ccu.h

diff --git a/Documentation/devicetree/bindings/clock/allwinner,sun55i-a523-ccu.yaml b/Documentation/devicetree/bindings/clock/allwinner,sun55i-a523-ccu.yaml
index 58be701a720ea..8d5481fb63ae8 100644
--- a/Documentation/devicetree/bindings/clock/allwinner,sun55i-a523-ccu.yaml
+++ b/Documentation/devicetree/bindings/clock/allwinner,sun55i-a523-ccu.yaml
@@ -19,6 +19,7 @@ properties:
   compatible:
     enum:
       - allwinner,sun55i-a523-ccu
+      - allwinner,sun55i-a523-cpu-ccu
       - allwinner,sun55i-a523-mcu-ccu
       - allwinner,sun55i-a523-r-ccu
 
@@ -35,12 +36,23 @@ properties:
 
 required:
   - "#clock-cells"
-  - "#reset-cells"
   - compatible
   - reg
   - clocks
   - clock-names
 
+if:
+  properties:
+    compatible:
+      contains:
+        const: allwinner,sun55i-a523-cpu-ccu
+then:
+  properties:
+    "#reset-cells": false
+else:
+  required:
+    - "#reset-cells"
+
 allOf:
   - if:
       properties:
@@ -64,6 +76,30 @@ allOf:
             - const: iosc
             - const: losc-fanout
 
+  - if:
+      properties:
+        compatible:
+          enum:
+            - allwinner,sun55i-a523-cpu-ccu
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: High Frequency Oscillator (usually at 24MHz)
+            - description: Low Frequency Oscillator (usually at 32kHz)
+            - description: Internal Oscillator
+            - description: Peripherals PLL 0 (1200 MHz output)
+            - description: Peripherals PLL 0 (600 MHz output)
+
+        clock-names:
+          items:
+            - const: hosc
+            - const: losc
+            - const: iosc
+            - const: pll-periph0-2x
+            - const: pll-periph0-600m
+
   - if:
       properties:
         compatible:
diff --git a/include/dt-bindings/clock/sun55i-a523-cpu-ccu.h b/include/dt-bindings/clock/sun55i-a523-cpu-ccu.h
new file mode 100644
index 0000000000000..042f2310f64de
--- /dev/null
+++ b/include/dt-bindings/clock/sun55i-a523-cpu-ccu.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR MIT) */
+/*
+ * Copyright 2025 Arm Ltd.
+ */
+
+#ifndef _DT_BINDINGS_CLK_SUN55I_A523_CPU_CCU_H_
+#define _DT_BINDINGS_CLK_SUN55I_A523_CPU_CCU_H_
+
+#define CLK_CPU_L		7
+#define CLK_CPU_DSU		8
+#define CLK_CPU_B		9
+
+#endif /* _DT_BINDINGS_CLK_SUN55I_A523_CPU_CCU_H_ */
-- 
2.46.4