[PATCH 1/2] dt-bindings: pwm: marvell,pxa-pwm: Add SpacemiT K3 PWM support

[Yixun Lan]

The PWM controller in SpacemiT K3 SoC reuse the same IP as previous K1
generation, while the difference is that one additional bus clock is
added.

Signed-off-by: Yixun Lan <dlan at kernel.org>
---
 .../devicetree/bindings/pwm/marvell,pxa-pwm.yaml   | 53 ++++++++++++++++++++--
 1 file changed, 50 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml b/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml
index 8df327e52810..3427c8ef3945 100644
--- a/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml
+++ b/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml
@@ -15,7 +15,9 @@ allOf:
       properties:
         compatible:
           contains:
-            const: spacemit,k1-pwm
+            enum:
+              - spacemit,k1-pwm
+              - spacemit,k3-pwm
     then:
       properties:
         "#pwm-cells":
@@ -26,6 +28,38 @@ allOf:
           const: 1
           description: |
             Used for specifying the period length in nanoseconds.
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - spacemit,k3-pwm
+    then:
+      properties:
+        clock-names:
+          items:
+            - const: func
+            - const: bus
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - spacemit,k3-pwm
+    then:
+      required:
+        - clock-names
+      properties:
+        clocks:
+          minItems: 2
+        clock-names:
+          minItems: 2
+    else:
+      properties:
+        clocks:
+          maxItems: 1
+        clock-names:
+          maxItems: 1
 
 properties:
   compatible:
@@ -36,7 +70,9 @@ properties:
           - marvell,pxa168-pwm
           - marvell,pxa910-pwm
       - items:
-          - const: spacemit,k1-pwm
+          - enum:
+              - spacemit,k1-pwm
+              - spacemit,k3-pwm
           - const: marvell,pxa910-pwm
 
   reg:
@@ -47,7 +83,18 @@ properties:
     description: Number of cells in a pwm specifier.
 
   clocks:
-    maxItems: 1
+    minItems: 1
+    items:
+      - description: The function clock
+      - description: An optional bus clock
+
+  clock-names:
+    minItems: 1
+    maxItems: 2
+    oneOf:
+      - items:
+          - const: func
+          - const: bus
 
   resets:
     maxItems: 1

-- 
2.53.0