Hi, Mark

quoted

+
+Required properties:
+- compatible: must be "sprd,sc9836-uart"
+- reg: offset and length of the register set for the device
+- interrupts: exactly one interrupt specifier
+- clocks: phandles to input clocks.

The order and relevance of each should be specified. If you have
multiple clocks I would strongly recommend you use clock-names to
distinguish them.

Thank you for the recommendation.
but, since we haven't made the clock driver ready, for this initial
commit, we just let 4 UARTs share a single fixed 26 MHz clock source.
we'll do like you've recommended when we will submit the clock driver
in the future.

Best regards,
Chunyan

Otherwise this looks fine.

Mark.