diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 3ea64b22cf0d..1d38ecfafc59 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -1617,7 +1617,7 @@ static void
 scmi_common_fastchannel_init(const struct scmi_protocol_handle *ph,
 			     u8 describe_id, u32 message_id, u32 valid_size,
 			     u32 domain, void __iomem **p_addr,
-			     struct scmi_fc_db_info **p_db)
+			     struct scmi_fc_db_info **p_db, u32 *rate_limit)
 {
 	int ret;
 	u32 flags;
@@ -1661,6 +1661,9 @@ scmi_common_fastchannel_init(const struct scmi_protocol_handle *ph,
 		goto err_xfer;
 	}
 
+	if (rate_limit)
+		*rate_limit = le32_to_cpu(resp->rate_limit) & GENMASK(19, 0);
+
 	phys_addr = le32_to_cpu(resp->chan_addr_low);
 	phys_addr |= (u64)le32_to_cpu(resp->chan_addr_high) << 32;
 	addr = devm_ioremap(ph->dev, phys_addr, size);
diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index 37c80376bd0a..fbcbd703198a 100644
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/drivers/firmware/arm_scmi/perf.c
@@ -789,23 +789,27 @@ static void scmi_perf_domain_init_fc(const struct scmi_protocol_handle *ph,
 
 	ph->hops->fastchannel_init(ph, PERF_DESCRIBE_FASTCHANNEL,
 				   PERF_LEVEL_GET, 4, dom->id,
-				   &fc[PERF_FC_LEVEL].get_addr, NULL);
+				   &fc[PERF_FC_LEVEL].get_addr, NULL,
+				   &fc[PERF_FC_LEVEL].rate_limit);
 
 	ph->hops->fastchannel_init(ph, PERF_DESCRIBE_FASTCHANNEL,
 				   PERF_LIMITS_GET, 8, dom->id,
-				   &fc[PERF_FC_LIMIT].get_addr, NULL);
+				   &fc[PERF_FC_LIMIT].get_addr, NULL,
+				   &fc[PERF_FC_LIMIT].rate_limit);
 
 	if (dom->info.set_perf)
 		ph->hops->fastchannel_init(ph, PERF_DESCRIBE_FASTCHANNEL,
 					   PERF_LEVEL_SET, 4, dom->id,
 					   &fc[PERF_FC_LEVEL].set_addr,
-					   &fc[PERF_FC_LEVEL].set_db);
+					   &fc[PERF_FC_LEVEL].set_db,
+					   &fc[PERF_FC_LEVEL].rate_limit);
 
 	if (dom->set_limits)
 		ph->hops->fastchannel_init(ph, PERF_DESCRIBE_FASTCHANNEL,
 					   PERF_LIMITS_SET, 8, dom->id,
 					   &fc[PERF_FC_LIMIT].set_addr,
-					   &fc[PERF_FC_LIMIT].set_db);
+					   &fc[PERF_FC_LIMIT].set_db,
+					   &fc[PERF_FC_LIMIT].rate_limit);
 
 	dom->fc_info = fc;
 }
@@ -974,6 +978,25 @@ static bool scmi_fast_switch_possible(const struct scmi_protocol_handle *ph,
 	return dom->fc_info && dom->fc_info[PERF_FC_LEVEL].set_addr;
 }
 
+static int scmi_fast_switch_rate_limit(const struct scmi_protocol_handle *ph,
+				       u32 domain, u32 *rate_limit)
+{
+	struct perf_dom_info *dom;
+
+	if (!rate_limit)
+		return -EINVAL;
+
+	dom = scmi_perf_domain_lookup(ph, domain);
+	if (IS_ERR(dom))
+		return PTR_ERR(dom);
+
+	if (!dom->fc_info)
+		return -EINVAL;
+
+	*rate_limit = dom->fc_info[PERF_FC_LEVEL].rate_limit;
+	return 0;
+}
+
 static enum scmi_power_scale
 scmi_power_scale_get(const struct scmi_protocol_handle *ph)
 {
@@ -996,6 +1019,7 @@ static const struct scmi_perf_proto_ops perf_proto_ops = {
 	.freq_get = scmi_dvfs_freq_get,
 	.est_power_get = scmi_dvfs_est_power_get,
 	.fast_switch_possible = scmi_fast_switch_possible,
+	.fast_switch_rate_limit = scmi_fast_switch_rate_limit,
 	.power_scale_get = scmi_power_scale_get,
 };
 
diff --git a/drivers/firmware/arm_scmi/powercap.c b/drivers/firmware/arm_scmi/powercap.c
index a4c6cd4716fe..604184c044ff 100644
--- a/drivers/firmware/arm_scmi/powercap.c
+++ b/drivers/firmware/arm_scmi/powercap.c
@@ -703,20 +703,24 @@ static void scmi_powercap_domain_init_fc(const struct scmi_protocol_handle *ph,
 	ph->hops->fastchannel_init(ph, POWERCAP_DESCRIBE_FASTCHANNEL,
 				   POWERCAP_CAP_SET, 4, domain,
 				   &fc[POWERCAP_FC_CAP].set_addr,
-				   &fc[POWERCAP_FC_CAP].set_db);
+				   &fc[POWERCAP_FC_CAP].set_db,
+				   &fc[POWERCAP_FC_CAP].rate_limit);
 
 	ph->hops->fastchannel_init(ph, POWERCAP_DESCRIBE_FASTCHANNEL,
 				   POWERCAP_CAP_GET, 4, domain,
-				   &fc[POWERCAP_FC_CAP].get_addr, NULL);
+				   &fc[POWERCAP_FC_CAP].get_addr, NULL,
+				   &fc[POWERCAP_FC_CAP].rate_limit);
 
 	ph->hops->fastchannel_init(ph, POWERCAP_DESCRIBE_FASTCHANNEL,
 				   POWERCAP_PAI_SET, 4, domain,
 				   &fc[POWERCAP_FC_PAI].set_addr,
-				   &fc[POWERCAP_FC_PAI].set_db);
+				   &fc[POWERCAP_FC_PAI].set_db,
+				   &fc[POWERCAP_FC_PAI].rate_limit);
 
 	ph->hops->fastchannel_init(ph, POWERCAP_DESCRIBE_FASTCHANNEL,
 				   POWERCAP_PAI_GET, 4, domain,
-				   &fc[POWERCAP_FC_PAI].get_addr, NULL);
+				   &fc[POWERCAP_FC_PAI].get_addr, NULL,
+				   &fc[POWERCAP_PAI_GET].rate_limit);
 
 	*p_fc = fc;
 }
diff --git a/drivers/firmware/arm_scmi/protocols.h b/drivers/firmware/arm_scmi/protocols.h
index e683c26f24eb..8b5d9ce4a33a 100644
--- a/drivers/firmware/arm_scmi/protocols.h
+++ b/drivers/firmware/arm_scmi/protocols.h
@@ -234,6 +234,7 @@ struct scmi_fc_info {
 	void __iomem *set_addr;
 	void __iomem *get_addr;
 	struct scmi_fc_db_info *set_db;
+	u32 rate_limit;
 };
 
 /**
@@ -268,7 +269,8 @@ struct scmi_proto_helpers_ops {
 				 u8 describe_id, u32 message_id,
 				 u32 valid_size, u32 domain,
 				 void __iomem **p_addr,
-				 struct scmi_fc_db_info **p_db);
+				 struct scmi_fc_db_info **p_db,
+				 u32 *rate_limit);
 	void (*fastchannel_db_ring)(struct scmi_fc_db_info *db);
 };
 
diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h
index acd956ffcb84..fafedb3b6604 100644
--- a/include/linux/scmi_protocol.h
+++ b/include/linux/scmi_protocol.h
@@ -139,6 +139,8 @@ struct scmi_perf_domain_info {
  *	at a given frequency
  * @fast_switch_possible: indicates if fast DVFS switching is possible or not
  *	for a given device
+ * @fast_switch_rate_limit: gets the minimum time (us) required between
+ *	successive fast_switching requests
  * @power_scale_mw_get: indicates if the power values provided are in milliWatts
  *	or in some other (abstract) scale
  */
@@ -168,6 +170,8 @@ struct scmi_perf_proto_ops {
 			     unsigned long *rate, unsigned long *power);
 	bool (*fast_switch_possible)(const struct scmi_protocol_handle *ph,
 				     u32 domain);
+	int (*fast_switch_rate_limit)(const struct scmi_protocol_handle *ph,
+				      u32 domain, u32 *rate_limit);
 	enum scmi_power_scale (*power_scale_get)(const struct scmi_protocol_handle *ph);
 };
 
