diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
index d17efb1dd0cb..f815dab3be50 100644
--- a/drivers/mailbox/imx-mailbox.c
+++ b/drivers/mailbox/imx-mailbox.c
@@ -30,7 +30,7 @@
 #define IMX_MU_SCU_CHANS	6
 /* TX0/RX0 */
 #define IMX_MU_S4_CHANS		2
-#define IMX_MU_CHAN_NAME_SIZE	20
+#define IMX_MU_CHAN_NAME_SIZE	32
 
 #define IMX_MU_V2_PAR_OFF	0x4
 #define IMX_MU_V2_TR_MASK	GENMASK(7, 0)
@@ -782,7 +782,7 @@ static int imx_mu_init_generic(struct imx_mu_priv *priv)
 		cp->chan = &priv->mbox_chans[i];
 		priv->mbox_chans[i].con_priv = cp;
 		snprintf(cp->irq_desc, sizeof(cp->irq_desc),
-			 "imx_mu_chan[%i-%i]", cp->type, cp->idx);
+			 "%s[%i-%i]", dev_name(priv->dev), cp->type, cp->idx);
 	}
 
 	priv->mbox.num_chans = IMX_MU_CHANS;
@@ -819,7 +819,7 @@ static int imx_mu_init_specific(struct imx_mu_priv *priv)
 		cp->chan = &priv->mbox_chans[i];
 		priv->mbox_chans[i].con_priv = cp;
 		snprintf(cp->irq_desc, sizeof(cp->irq_desc),
-			 "imx_mu_chan[%i-%i]", cp->type, cp->idx);
+			 "%s[%i-%i]", dev_name(priv->dev), cp->type, cp->idx);
 	}
 
 	priv->mbox.num_chans = num_chans;