3 files changed, 22 insertions, 0 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 410892d54bc4..d7f97167cac3 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -131,6 +131,24 @@ unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
 EXPORT_SYMBOL_GPL(dev_pm_opp_get_freq);
 
 /**
+ * dev_pm_opp_get_level() - Gets the level corresponding to an available opp
+ * @opp:	opp for which level value has to be returned for
+ *
+ * Return: level read from device tree corresponding to the opp, else
+ * return 0.
+ */
+unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp)
+{
+	if (IS_ERR_OR_NULL(opp) || !opp->available) {
+		pr_err("%s: Invalid parameters\n", __func__);
+		return 0;
+	}
+
+	return opp->level;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_get_level);
+
+/**
  * dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not
  * @opp: opp for which turbo mode is being verified
  *
diff --git a/drivers/opp/of.c b/drivers/opp/of.c
index cd58959e5158..62504b18f198 100644
--- a/drivers/opp/of.c
+++ b/drivers/opp/of.c
@@ -595,6 +595,8 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table,
 		new_opp->rate = (unsigned long)rate;
 	}
 
+	of_property_read_u32(np, "opp-level", &new_opp->level);
+
 	/* Check if the OPP supports hardware's hierarchy of versions or not */
 	if (!_opp_is_supported(dev, opp_table, np)) {
 		dev_dbg(dev, "OPP not supported by hardware: %llu\n", rate);
diff --git a/drivers/opp/opp.h b/drivers/opp/opp.h
index 810a85b9a66d..569b3525aa67 100644
--- a/drivers/opp/opp.h
+++ b/drivers/opp/opp.h
@@ -60,6 +60,7 @@ extern struct list_head opp_tables;
  * @suspend:	true if suspend OPP
  * @pstate: Device's power domain's performance state.
  * @rate:	Frequency in hertz
+ * @level:	Performance level
  * @supplies:	Power supplies voltage/current values
  * @clock_latency_ns: Latency (in nanoseconds) of switching to this OPP's
  *		frequency from any other OPP's frequency.
@@ -80,6 +81,7 @@ struct dev_pm_opp {
 	bool suspend;
 	unsigned int pstate;
 	unsigned long rate;
+	unsigned int level;
 
 	struct dev_pm_opp_supply *supplies;