diff --git a/Documentation/devicetree/bindings/pwm/imx-pwm.yaml b/Documentation/devicetree/bindings/pwm/imx-pwm.yaml
index 379d693889f6..b3da4e629341 100644
--- a/Documentation/devicetree/bindings/pwm/imx-pwm.yaml
+++ b/Documentation/devicetree/bindings/pwm/imx-pwm.yaml
@@ -9,6 +9,9 @@ title: Freescale i.MX PWM controller
 maintainers:
   - Philipp Zabel <p.zabel@pengutronix.de>
 
+allOf:
+  - $ref: pwm.yaml#
+
 properties:
   "#pwm-cells":
     description: |
@@ -59,7 +62,6 @@ properties:
     maxItems: 1
 
 required:
-  - "#pwm-cells"
   - compatible
   - reg
   - clocks
diff --git a/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.yaml b/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.yaml
index fe9ef42544f1..8bef9dfeba9a 100644
--- a/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.yaml
+++ b/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.yaml
@@ -13,6 +13,9 @@ description: |
   The TPM counter and period counter are shared between multiple
   channels, so all channels should use same period setting.
 
+allOf:
+  - $ref: pwm.yaml#
+
 properties:
   "#pwm-cells":
     const: 3
@@ -34,7 +37,6 @@ properties:
     maxItems: 1
 
 required:
-  - "#pwm-cells"
   - compatible
   - reg
   - clocks