Merge tag 'fsl-qoriq-next-2026-02-25' of https://source.denx.de/u-boot/custodians/u-boot-fsl-qoriq

For SCMI, Power Domain and IOMMU, validate device tree node before
continuing, to avoid boot failure.

drivers/firmware/scmi/mailbox_agent.c

@@ -101,7 +101,7 @@ static int scmi_mbox_get_channel(struct udevice *dev,
 	struct scmi_mbox_channel *chan;
 	int ret;
 
-	if (!dev_read_prop(protocol, "shmem", NULL)) {
+	if (!dev_has_ofnode(protocol) || !dev_read_prop(protocol, "shmem", NULL)) {
 		/* Uses agent base channel */
 		*channel = container_of(base_chan, struct scmi_channel, ref);
 

drivers/firmware/scmi/optee_agent.c

@@ -331,7 +331,8 @@ static int scmi_optee_get_channel(struct udevice *dev,
 	u32 channel_id;
 	int ret;
 
-	if (dev_read_u32(protocol, "linaro,optee-channel-id", &channel_id)) {
+	if (!dev_has_ofnode(protocol) ||
+	    dev_read_u32(protocol, "linaro,optee-channel-id", &channel_id)) {
 		/* Uses agent base channel */
 		*channel = container_of(base_chan, struct scmi_channel, ref);
 

drivers/iommu/iommu-uclass.c

@@ -79,6 +79,9 @@ int dev_iommu_enable(struct udevice *dev)
 	const struct iommu_ops *ops;
 	int i, count, ret = 0;
 
+	if (!dev_has_ofnode(dev))
+		return 0;
+
 	count = dev_count_phandle_with_args(dev, "iommus",
 					    "#iommu-cells", 0);
 	for (i = 0; i < count; i++) {

drivers/power/domain/power-domain-uclass.c

@@ -180,6 +180,9 @@ static int dev_power_domain_ctrl(struct udevice *dev, bool on)
 	struct power_domain pd;
 	int i, count, ret = 0;
 
+	if (!dev_has_ofnode(dev))
+		return 0;
+
 	count = dev_count_phandle_with_args(dev, "power-domains",
 					    "#power-domain-cells", 0);
 	for (i = 0; i < count; i++) {