dt-bindings: arm: stm32: Modify STM32MP15x Phytec board items types

As Phytec manages different SoM configurations with different STM32MP15
SoC versions, modify the phyBOARD and SoM compatible items to "enum"
instead of "const".
The description concerns PHYTEC SoM equipped with STM32MP157
("st,stm32mp157" is "const").
Also add comments in front of the enum items to be able to identify the
compatible string with the phyBOARD/phyCORE names.

Signed-off-by: Christophe Parant <c.parant@phytec.fr>
Link: https://lore.kernel.org/r/20251210101611.27008-4-c.parant@phytec.fr
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

diff --git a/Documentation/devicetree/bindings/arm/stm32/stm32.yaml b/Documentation/devicetree/bindings/arm/stm32/stm32.yaml
index ad144c02eb7edf4fc2191ab0af244342dcaa59d5..c6af3a46364fc0188eb759e731189cc7a3dd0a56 100644 (file)
--- a/Documentation/devicetree/bindings/arm/stm32/stm32.yaml
+++ b/Documentation/devicetree/bindings/arm/stm32/stm32.yaml
@@ -183,10 +183,12 @@ properties:
           - const: seeed,stm32mp157c-odyssey-som
           - const: st,stm32mp157
 
-      - description: Phytec STM32MP1 SoM based Boards
+      - description: Phytec STM32MP157 SoM based Boards
         items:
-          - const: phytec,phycore-stm32mp1-3
-          - const: phytec,phycore-stm32mp157c-som
+          - enum:
+              - phytec,phycore-stm32mp1-3 # phyBOARD-Sargas with phyCORE-STM32MP157C SoM
+          - enum:
+              - phytec,phycore-stm32mp157c-som # phyCORE-STM32MP157C SoM
           - const: st,stm32mp157
 
       - description: Ultratronik STM32MP1 SBC based Boards