[PATCH] arm64: dts: exynos7: add support for cpuidle core power down

quoted

+			CPU_SLEEP: cpu-sleep {
+				compatible = "arm,idle-state";
+				local-timer-stop;
+				arm,psci-suspend-param = <0x0010000>;
+				entry-latency-us = <20>;
+				exit-latency-us = <150>;
+				min-residency-us = <2100>;
+				status = "enabled";

While status is a relatively standard property, it's absence implies
everything is OK. There no need for it here as-is.

Additionally, the canonical value is "okay", not "enabled", so this
would fail were we to use of_device_is_available in the idle states
parsing.

status ? This is not a documented property. If you need it please explain
why, define its bindings and we can see how to accommodate it.

Do we expect that some idle states won't be available on some boards
built from the same platform?

Mark.