diff --git a/drivers/imx/usdhc/imx_usdhc.h b/drivers/imx/usdhc/imx_usdhc.h
index 49cd481..6ac4b0e 100644
--- a/drivers/imx/usdhc/imx_usdhc.h
+++ b/drivers/imx/usdhc/imx_usdhc.h
@@ -12,8 +12,8 @@
 
 typedef struct imx_usdhc_params {
 	uintptr_t	reg_base;
-	int		clk_rate;
-	int		bus_width;
+	unsigned int	clk_rate;
+	unsigned int	bus_width;
 	unsigned int	flags;
 } imx_usdhc_params_t;