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-rw-r--r--Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml4
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
index 04cbbca0e94e..b0e58b15b9ae 100644
--- a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
+++ b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
@@ -68,6 +68,7 @@ properties:
maxItems: 1
clocks:
+ minItems: 1
items:
- description: Controller clock used by normal mode
- description: Reference clock used by low power mode etc
@@ -76,8 +77,9 @@ properties:
- description: controller clock
clock-names:
+ minItems: 1
items:
- - const: sys_ck
+ - const: sys_ck # required, the following ones are optional
- const: ref_ck
- const: mcu_ck
- const: dma_ck