[PATCH v3] dt-bindings: display: st,stm32-ltdc: Document stm32mp25 compatible

[Yannick Fertre <yannick.fertre@foss.st.com>]

Add "st,stm32mp25-ltdc" compatible for SOC MP25. This new SOC introduce
new clocks (bus, ref & lvds). Bus clock was separated from lcd clock.
New sources are possible for lcd clock (lvds / ref).

Signed-off-by: Yannick Fertre <yannick.fertre@foss.st.com>
---

Changes in v3: Add max/min Items fields.
'make dt_binding_check' command fails on previous patch, rework fiedls mas/min items
of properties clocks & clock-names.

Changes in v2: Rework clock property.

 .../bindings/display/st,stm32-ltdc.yaml       | 28 +++++++++++++++----
 1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml b/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml
index d6ea4d62a2cf..940127820de3 100644
--- a/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml
+++ b/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml
@@ -12,7 +12,9 @@ maintainers:
 
 properties:
   compatible:
-    const: st,stm32-ltdc
+    enum:
+      - st,stm32-ltdc
+      - st,stm32mp25-ltdc
 
   reg:
     maxItems: 1
@@ -24,12 +26,12 @@ properties:
     minItems: 1
 
   clocks:
-    maxItems: 1
+    minItems: 1
+    maxItems: 4
 
   clock-names:
-    items:
-      - const: lcd
-
+    minItems: 1
+    maxItems: 4
   resets:
     maxItems: 1
 
@@ -51,6 +53,22 @@ required:
   - resets
   - port
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - st,stm32mp25-ltdc
+    then:
+      properties:
+        clocks:
+          minItems: 2
+    else:
+      properties:
+        clocks:
+          minItems: 1
+
 additionalProperties: false
 
 examples:
-- 
2.34.1