diff --git a/drivers/pinctrl/freescale/pinctrl-imx23.c b/drivers/pinctrl/freescale/pinctrl-imx23.c
index 89b4f160138f..c9405685971b 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx23.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx23.c
@@ -257,7 +257,7 @@ static const struct pinctrl_pin_desc imx23_pins[] = {
 	MXS_PINCTRL_PIN(EMI_CLKN),
 };
 
-static struct mxs_regs imx23_regs = {
+static const struct mxs_regs imx23_regs = {
 	.muxsel = 0x100,
 	.drive = 0x200,
 	.pull = 0x400,
diff --git a/drivers/pinctrl/freescale/pinctrl-imx28.c b/drivers/pinctrl/freescale/pinctrl-imx28.c
index 295236dfb0bc..87deb9ec938a 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx28.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx28.c
@@ -373,7 +373,7 @@ static const struct pinctrl_pin_desc imx28_pins[] = {
 	MXS_PINCTRL_PIN(EMI_CKE),
 };
 
-static struct mxs_regs imx28_regs = {
+static const struct mxs_regs imx28_regs = {
 	.muxsel = 0x100,
 	.drive = 0x300,
 	.pull = 0x600,