dt-bindings: regulator: Add TI TPS65215 PMIC bindings

TPS65215 is a Power Management IC with 3 Buck regulators and 2 LDOs.

TPS65215 has 2 LDOS and 1 GPO, whereas TPS65219 has 4 LDOs and 2 GPOs. The
remaining features for both devices are the same.

Signed-off-by: Shree Ramamoorthy <s-ramamoorthy@ti.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250206173725.386720-2-s-ramamoorthy@ti.com
Signed-off-by: Lee Jones <lee@kernel.org>

Documentation/devicetree/bindings/regulator/ti,tps65219.yaml

@@ -4,7 +4,7 @@
 $id: http://devicetree.org/schemas/regulator/ti,tps65219.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: TI tps65219 Power Management Integrated Circuit regulators
+title: TI TPS65215/TPS65219 Power Management Integrated Circuits
 
 maintainers:
   - Jerome Neanne <jerome.neanne@baylibre.com>
@@ -12,9 +12,16 @@ maintainers:
 description: |
   Regulator nodes should be named to buck<number> and ldo<number>.
 
+  TI TPS65219 is a Power Management IC with 3 Buck regulators, 4 Low
+  Drop-out Regulators (LDOs), 1 GPIO, 2 GPOs, and power-button.
+
+  TI TPS65215 is a derivative of TPS65219 with 3 Buck regulators, 2 Low
+  Drop-out Regulators (LDOs), 1 GPIO, 1 GPO, and power-button.
+
 properties:
   compatible:
     enum:
+      - ti,tps65215
       - ti,tps65219
 
   reg:
@@ -90,6 +97,18 @@ required:
 
 additionalProperties: false
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: ti,tps65215
+    then:
+      properties:
+        regulators:
+          patternProperties:
+            "^ldo[3-4]$": false
+
 examples:
   - |
     #include <dt-bindings/interrupt-controller/arm-gic.h>