diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c
index f7c96d209eda7..dbb2d4d548941 100644
--- a/drivers/usb/phy/phy-fsl-usb.c
+++ b/drivers/usb/phy/phy-fsl-usb.c
@@ -65,7 +65,7 @@ struct fsl_otg_timer *b_data_pulse_tmr, *b_vbus_pulse_tmr, *b_srp_fail_tmr,
 
 static struct list_head active_timers;
 
-static struct fsl_otg_config fsl_otg_initdata = {
+static const struct fsl_otg_config fsl_otg_initdata = {
 	.otg_port = 1,
 };