On Fri, Mar 13, 2020 at 05:34:24PM +0800, Henry Chen wrote:

+- regulator : The DVFSRC regulator is modelled as a subdevice of the DVFSRC.
+	Because DVFSRC can request power directly via register read/write, likes
+	vcore which is a core power of mt8183. As such, the DVFSRC regulator
+	requires that DVFSRC nodes be present. shall contain only one of the
+	following: "mediatek,mt8183-dvfsrc-regulator"

Why do we even need a compatible here - it's not adding any new
information to the parent mt8183 node, the compatible is mainly for the
way Linux divides things up rather than a description of the hardware.
We could just say that the regulator node always has a particular name
instead.

It's also not quite true that it contains "only" the compatible - it
also allows the regulator constraints to be defined.