[PATCH v3 3/3] dt-bindings: mmc: synopsys-dw-mshc: No need to enforce setting two clocks

[ping.gao]

The driver `dw_mmc.c` now treats the biu clock as optional, so the
binding can be relaxed to allow a single clock.
Signed-off-by: ping.gao <ping.gao@xxxxxxxxxxx>
---
 Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.yaml
index a6292777e376..7a02fb6f585b 100644
--- a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.yaml
+++ b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.yaml
@@ -24,11 +24,12 @@ properties:
     maxItems: 1
 
   clocks:
-    minItems: 2
+    minItems: 1
     maxItems: 2
     description:
       Handle to "biu" and "ciu" clocks for the
       bus interface unit clock and the card interface unit clock.
+      If only one clock is present it must be "ciu" clock.
 
   clock-names:
     items:
-- 
2.50.1