[PATCH v9 1/3] dt-bindings: mfd: x-powers,axp152: Document the AXP313a variant

[Andre Przywara <andre.przywara@arm.com>]

From: Martin Botka <martin.botka@somainline.org>

The X-Powers AXP313a is a PMIC used on some devices with the Allwinner
H616 or H313 SoC.
According to the datasheet, the DC/DC converter PWM frequency is fixed
(to 3 MHz), so disallow the property that lets us set this frequency
for the other PMICs.

Signed-off-by: Martin Botka <martin.botka@somainline.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 .../devicetree/bindings/mfd/x-powers,axp152.yaml     | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml b/Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml
index b7a8747d5fa0e..4b4f42cb09ef7 100644
--- a/Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml
+++ b/Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml
@@ -79,6 +79,17 @@ allOf:
       required:
         - interrupts
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: x-powers,axp313a
+
+    then:
+      not:
+        required:
+          - x-powers,dcdc-freq
+
 properties:
   compatible:
     oneOf:
@@ -88,6 +99,7 @@ properties:
           - x-powers,axp209
           - x-powers,axp221
           - x-powers,axp223
+          - x-powers,axp313a
           - x-powers,axp803
           - x-powers,axp806
           - x-powers,axp809
-- 
2.25.1