Hi Lina,

Couple of nitpicks here:

On Fri, Jul 29, 2016 at 03:56:12PM -0600, Lina Iyer wrote:

From: Axel Haslam <redacted>

This patch allows domains to define idle states in the DT. SoC's can
define domain idle states in DT using the "power-states" property of the
domain provider. Calling of_pm_genpd_init() will  read the idle states
and initialize the genpd for the domain.

The commit message got out of sync here, the idle states property is not
"power-states" but "domain-idle-states" now.

In addition to the entry and exit latency for idle state, also add
residency and state-param properties. A domain idling in a state is only
power effecient if it stays idle for a certain period in that state. The
residency provides this minimum time for the idle state to provide power
benefits. The state-param is a state specific u32 value that the
platform may use for that idle state.

And "state-param" isn't used any more, since the patchset switched to using
arm,idle-state.

[snip]
+int pm_genpd_of_parse_power_states(struct generic_pm_domain *genpd)
+{
+	struct device_node *np;
+	int i, err = 0;
+
+	for (i = 0; i < GENPD_MAX_NUM_STATES; i++) {
+		np = of_parse_phandle(genpd->of_node, "domain-idle-states", i);
+		if (!np)
+			break;
+
+		err = genpd_of_get_power_state(&genpd->states[i], np);
+		if (err) {
+			pr_err
+			    ("Parsing idle state node %s failed with err %d\n",
+			     np->full_name, err);
+			err = -EINVAL;

I guess there should be an of_node_put here.

+			break;
+		}
+		of_node_put(np);
+	}
+
+	if (err)
+		return err;
+
+	genpd->state_count = i;
+	return 0;
+}