diff --git a/drivers/firmware/scmi/mailbox_agent.c b/drivers/firmware/scmi/mailbox_agent.c
index e63b67c..3efdab9 100644
--- a/drivers/firmware/scmi/mailbox_agent.c
+++ b/drivers/firmware/scmi/mailbox_agent.c
@@ -43,13 +43,9 @@
 				 struct scmi_channel *channel,
 				 struct scmi_msg *msg)
 {
-	struct scmi_mbox_channel *chan = dev_get_plat(dev);
+	struct scmi_mbox_channel *chan = &channel->ref;
 	int ret;
 
-	/* Support SCMI drivers upgraded to of_get_channel operator */
-	if (channel)
-		chan = &channel->ref;
-
 	ret = scmi_write_msg_to_smt(dev, &chan->smt, msg);
 	if (ret)
 		return ret;
diff --git a/drivers/firmware/scmi/optee_agent.c b/drivers/firmware/scmi/optee_agent.c
index da5c2ec..2b2b8c1 100644
--- a/drivers/firmware/scmi/optee_agent.c
+++ b/drivers/firmware/scmi/optee_agent.c
@@ -278,13 +278,10 @@
 				  struct scmi_channel *channel,
 				  struct scmi_msg *msg)
 {
+	struct scmi_optee_channel *chan = &channel->ref;
 	struct channel_session sess = { };
 	int ret;
 
-	/* Support SCMI drivers upgraded to of_get_channel operator */
-	if (channel)
-		chan = &channel->ref;
-
 	ret = open_channel(dev, chan, &sess);
 	if (ret)
 		return ret;
diff --git a/drivers/firmware/scmi/smccc_agent.c b/drivers/firmware/scmi/smccc_agent.c
index 73a7e0a..bc2eb67 100644
--- a/drivers/firmware/scmi/smccc_agent.c
+++ b/drivers/firmware/scmi/smccc_agent.c
@@ -42,14 +42,10 @@
 				  struct scmi_channel *channel,
 				  struct scmi_msg *msg)
 {
-	struct scmi_smccc_channel *chan = dev_get_plat(dev);
+	struct scmi_smccc_channel *chan = &channel->ref;
 	struct arm_smccc_res res;
 	int ret;
 
-	/* Support SCMI drivers upgraded to of_get_channel operator */
-	if (channel)
-		chan = &channel->ref;
-
 	ret = scmi_write_msg_to_smt(dev, &chan->smt, msg);
 	if (ret)
 		return ret;