dt-bindings: clock: renesas: Document RZ/G3E SoC CPG

Document the device tree bindings for the Renesas RZ/G3E SoC
Clock Pulse Generator (CPG).

Also define constants for the core clocks of the RZ/G3E SoC.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20241203105005.103927-5-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Author: bijudas

Documentation/devicetree/bindings/clock/renesas,rzv2h-cpg.yaml

@@ -4,19 +4,22 @@
 $id: http://devicetree.org/schemas/clock/renesas,rzv2h-cpg.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Renesas RZ/V2H(P) Clock Pulse Generator (CPG)
+title: Renesas RZ/{G3E,V2H(P)} Clock Pulse Generator (CPG)
 
 maintainers:
   - Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
 
 description:
-  On Renesas RZ/V2H(P) SoCs, the CPG (Clock Pulse Generator) handles generation
-  and control of clock signals for the IP modules, generation and control of resets,
-  and control over booting, low power consumption and power supply domains.
+  On Renesas RZ/{G3E,V2H(P)} SoCs, the CPG (Clock Pulse Generator) handles
+  generation and control of clock signals for the IP modules, generation and
+  control of resets, and control over booting, low power consumption and power
+  supply domains.
 
 properties:
   compatible:
-    const: renesas,r9a09g057-cpg
+    enum:
+      - renesas,r9a09g047-cpg # RZ/G3E
+      - renesas,r9a09g057-cpg # RZ/V2H
 
   reg:
     maxItems: 1
@@ -37,7 +40,7 @@ properties:
     description: |
       - For CPG core clocks, the two clock specifier cells must be "CPG_CORE"
         and a core clock reference, as defined in
-        <dt-bindings/clock/renesas,r9a09g057-cpg.h>,
+        <dt-bindings/clock/renesas,r9a09g0*-cpg.h>,
       - For module clocks, the two clock specifier cells must be "CPG_MOD" and
         a module number.  The module number is calculated as the CLKON register
         offset index multiplied by 16, plus the actual bit in the register

include/dt-bindings/clock/renesas,r9a09g047-cpg.h

@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+ *
+ * Copyright (C) 2024 Renesas Electronics Corp.
+ */
+#ifndef __DT_BINDINGS_CLOCK_RENESAS_R9A09G047_CPG_H__
+#define __DT_BINDINGS_CLOCK_RENESAS_R9A09G047_CPG_H__
+
+#include <dt-bindings/clock/renesas-cpg-mssr.h>
+
+/* Core Clock list */
+#define R9A09G047_SYS_0_PCLK			0
+#define R9A09G047_CA55_0_CORECLK0		1
+#define R9A09G047_CA55_0_CORECLK1		2
+#define R9A09G047_CA55_0_CORECLK2		3
+#define R9A09G047_CA55_0_CORECLK3		4
+#define R9A09G047_CA55_0_PERIPHCLK		5
+#define R9A09G047_CM33_CLK0			6
+#define R9A09G047_CST_0_SWCLKTCK		7
+#define R9A09G047_IOTOP_0_SHCLK			8
+
+#endif /* __DT_BINDINGS_CLOCK_RENESAS_R9A09G047_CPG_H__ */