diff --git a/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml b/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml
index 527864a..a1d382a 100644
--- a/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml
+++ b/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml
@@ -9,9 +9,6 @@
 maintainers:
   - Heiner Kallweit <hkallweit1@gmail.com>
 
-allOf:
-  - $ref: pwm.yaml#
-
 properties:
   compatible:
     oneOf:
@@ -43,12 +40,8 @@
     maxItems: 2
 
   clock-names:
-    oneOf:
-      - items:
-          - enum: [clkin0, clkin1]
-      - items:
-          - const: clkin0
-          - const: clkin1
+    minItems: 1
+    maxItems: 2
 
   "#pwm-cells":
     const: 3
@@ -57,6 +50,55 @@
   - compatible
   - reg
 
+allOf:
+  - $ref: pwm.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - amlogic,meson8-pwm
+              - amlogic,meson8b-pwm
+              - amlogic,meson-gxbb-pwm
+              - amlogic,meson-gxbb-ao-pwm
+              - amlogic,meson-axg-ee-pwm
+              - amlogic,meson-axg-ao-pwm
+              - amlogic,meson-g12a-ee-pwm
+              - amlogic,meson-g12a-ao-pwm-ab
+              - amlogic,meson-g12a-ao-pwm-cd
+    then:
+      # Historic bindings tied to the driver implementation
+      # The clocks provided here are meant to be matched with the input
+      # known (hard-coded) in the driver and used to select pwm clock
+      # source. Currently, the linux driver ignores this.
+      properties:
+        clock-names:
+          oneOf:
+            - items:
+                - enum: [clkin0, clkin1]
+            - items:
+                - const: clkin0
+                - const: clkin1
+
+  # Newer IP block take a single input per channel, instead of 4 inputs
+  # for both channels
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - amlogic,meson-s4-pwm
+    then:
+      properties:
+        clocks:
+          items:
+            - description: input clock of PWM channel A
+            - description: input clock of PWM channel B
+        clock-names: false
+      required:
+        - clocks
+
 additionalProperties: false
 
 examples:
@@ -68,3 +110,10 @@
       clock-names = "clkin0", "clkin1";
       #pwm-cells = <3>;
     };
+  - |
+    pwm@1000 {
+      compatible = "amlogic,meson-s4-pwm";
+      reg = <0x1000 0x10>;
+      clocks = <&pwm_src_a>, <&pwm_src_b>;
+      #pwm-cells = <3>;
+    };