1 files changed, 25 insertions, 4 deletions
diff --git a/dts/Bindings/gpio/sifive,gpio.yaml b/dts/Bindings/gpio/sifive,gpio.yaml
index a0efd8dc25..c2902aac25 100644
--- a/dts/Bindings/gpio/sifive,gpio.yaml
+++ b/dts/Bindings/gpio/sifive,gpio.yaml
@@ -13,7 +13,10 @@ maintainers:
 properties:
   compatible:
     items:
-      - const: sifive,fu540-c000-gpio
+      - enum:
+          - sifive,fu540-c000-gpio
+          - sifive,fu740-c000-gpio
+          - canaan,k210-gpiohs
       - const: sifive,gpio0
 
   reg:
@@ -21,9 +24,9 @@ properties:
 
   interrupts:
     description:
-      interrupt mapping one per GPIO. Maximum 16 GPIOs.
+      Interrupt mapping, one per GPIO. Maximum 32 GPIOs.
     minItems: 1
-    maxItems: 16
+    maxItems: 32
 
   interrupt-controller: true
 
@@ -36,6 +39,14 @@ properties:
   "#gpio-cells":
     const: 2
 
+  ngpios:
+    description:
+      The number of GPIOs available on the controller implementation.
+      It is 16 for the SiFive SoCs and 32 for the Canaan K210.
+    minimum: 1
+    maximum: 32
+    default: 16
+
   gpio-controller: true
 
 required:
@@ -44,10 +55,20 @@ required:
   - interrupts
   - interrupt-controller
   - "#interrupt-cells"
-  - clocks
   - "#gpio-cells"
   - gpio-controller
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - sifive,fu540-c000-gpio
+          - sifive,fu740-c000-gpio
+then:
+  required:
+    - clocks
+
 additionalProperties: false
 
 examples: