From mboxrd@z Thu Jan  1 00:00:00 1970
From: mark.rutland@arm.com (Mark Rutland)
Date: Wed, 15 Oct 2014 14:02:18 +0100
Subject: [PATCH] arm64: dts: exynos7: add support for cpuidle core power
 down
In-Reply-To: <20141015090047.GA26484@red-moon>
References: <1413354920-20165-1-git-send-email-k.chander@samsung.com>
 <20141015090047.GA26484@red-moon>
Message-ID: <20141015130218.GB20034@leverpostej>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

> > +			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.