diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
index 72639c6b4e1c..e9644e333d78 100644
--- a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
+++ b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
@@ -77,6 +77,7 @@ properties:
       - description: Mcu bus clock for register access
       - description: DMA bus clock for data transfer
       - description: controller clock
+      - description: frame count clock
 
   clock-names:
     minItems: 1
@@ -86,6 +87,7 @@ properties:
       - const: mcu_ck
       - const: dma_ck
       - const: xhci_ck
+      - const: frmcnt_ck
 
   phys:
     description: