diff --git a/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml b/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
index 539fa3b54b5b..cd823a3ef213 100644
--- a/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
+++ b/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
@@ -23,6 +23,8 @@ properties:
           - const: sophgo,sg2044-dwcmshc
           - const: sophgo,sg2042-dwcmshc
       - enum:
+          - canaan,k230-emmc
+          - canaan,k230-sdio
           - hpe,gsc-dwcmshc
           - rockchip,rk3568-dwcmshc
           - rockchip,rk3588-dwcmshc
@@ -58,6 +60,11 @@ properties:
     minItems: 4
     maxItems: 5
 
+  canaan,usb-phy:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: Phandle to the Canaan K230 USB PHY node required for
+                 k230-emmc/sdio.
+
   rockchip,txclk-tapnum:
     description: Specify the number of delay for tx sampling.
     $ref: /schemas/types.yaml#/definitions/uint8
@@ -101,6 +108,27 @@ required:
 allOf:
   - $ref: mmc-controller.yaml#
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - canaan,k230-emmc
+              - canaan,k230-sdio
+    then:
+      properties:
+        clocks:
+          minItems: 5
+        clock-names:
+          items:
+            - const: core
+            - const: bus
+            - const: axi
+            - const: block
+            - const: timer
+      required:
+        - canaan,usb-phy
+
   - if:
       properties:
         compatible: