dt-bindings: mfd: stm32-timers: Add support for stm32mp25

Add a new stm32mp25 compatible to stm32-timer dt-bindings in order to
support the STM32MP25 SoC. Some features has been added or updated in
the stm32-timer timer such as:
- hardware configuration and identification registers to read the timer
  version and capabilities (counter width, number of channels...)
- dithering mode (can be used to extend PWM resolution)
- input triggers list
- new counter modes
- various bit-field updates
- power-domains property
Timer trigger identifier can be up to 19 (from timer 20)

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20250110091922.980627-2-fabrice.gasnier@foss.st.com
Signed-off-by: Lee Jones <lee@kernel.org>

Documentation/devicetree/bindings/mfd/st,stm32-timers.yaml

@@ -21,7 +21,9 @@ maintainers:
 
 properties:
   compatible:
-    const: st,stm32-timers
+    enum:
+      - st,stm32-timers
+      - st,stm32mp25-timers
 
   reg:
     maxItems: 1
@@ -36,6 +38,9 @@ properties:
   resets:
     maxItems: 1
 
+  power-domains:
+    maxItems: 1
+
   dmas:
     minItems: 1
     maxItems: 7
@@ -77,7 +82,9 @@ properties:
 
     properties:
       compatible:
-        const: st,stm32-pwm
+        enum:
+          - st,stm32-pwm
+          - st,stm32mp25-pwm
 
       "#pwm-cells":
         const: 3
@@ -113,7 +120,9 @@ properties:
 
     properties:
       compatible:
-        const: st,stm32-timer-counter
+        enum:
+          - st,stm32-timer-counter
+          - st,stm32mp25-timer-counter
 
     required:
       - compatible
@@ -128,12 +137,13 @@ patternProperties:
         enum:
           - st,stm32-timer-trigger
           - st,stm32h7-timer-trigger
+          - st,stm32mp25-timer-trigger
 
       reg:
         description: Identify trigger hardware block.
         items:
           minimum: 0
-          maximum: 16
+          maximum: 19
 
     required:
       - compatible