diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index f8e711147501079011887cc86f65365b04b1cf46..5d22ea532e421516fb9ceb3bddbdeddb09c7b4ba 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -203,6 +203,26 @@ static int atmel_lcdfb_check_var(struct fb_var_screeninfo *var,
 	var->transp.offset = var->transp.length = 0;
 	var->xoffset = var->yoffset = 0;
 
+	/* Saturate vertical and horizontal timings at maximum values */
+	var->vsync_len = min_t(u32, var->vsync_len,
+			(ATMEL_LCDC_VPW >> ATMEL_LCDC_VPW_OFFSET) + 1);
+	var->upper_margin = min_t(u32, var->upper_margin,
+			ATMEL_LCDC_VBP >> ATMEL_LCDC_VBP_OFFSET);
+	var->lower_margin = min_t(u32, var->lower_margin,
+			ATMEL_LCDC_VFP);
+	var->right_margin = min_t(u32, var->right_margin,
+			(ATMEL_LCDC_HFP >> ATMEL_LCDC_HFP_OFFSET) + 1);
+	var->hsync_len = min_t(u32, var->hsync_len,
+			(ATMEL_LCDC_HPW >> ATMEL_LCDC_HPW_OFFSET) + 1);
+	var->left_margin = min_t(u32, var->left_margin,
+			ATMEL_LCDC_HBP + 1);
+
+	/* Some parameters can't be zero */
+	var->vsync_len = max_t(u32, var->vsync_len, 1);
+	var->right_margin = max_t(u32, var->right_margin, 1);
+	var->hsync_len = max_t(u32, var->hsync_len, 1);
+	var->left_margin = max_t(u32, var->left_margin, 1);
+
 	switch (var->bits_per_pixel) {
 	case 1:
 	case 2:
diff --git a/include/video/atmel_lcdc.h b/include/video/atmel_lcdc.h
index 4eea63761a3f481fa8f6dd9ed5259056fee71668..76095e70935b7e085aa2b4ed3de1df517fb56dde 100644
--- a/include/video/atmel_lcdc.h
+++ b/include/video/atmel_lcdc.h
@@ -115,20 +115,20 @@ struct atmel_lcdfb_info {
 #define		ATMEL_LCDC_MEMOR_LITTLE		(1 << 31)
 
 #define ATMEL_LCDC_TIM1		0x0808
-#define	ATMEL_LCDC_VFP		(0xff <<  0)
+#define	ATMEL_LCDC_VFP		(0xffU <<  0)
 #define	ATMEL_LCDC_VBP_OFFSET		8
-#define	ATMEL_LCDC_VBP		(0xff <<  ATMEL_LCDC_VBP_OFFSET)
+#define	ATMEL_LCDC_VBP		(0xffU <<  ATMEL_LCDC_VBP_OFFSET)
 #define	ATMEL_LCDC_VPW_OFFSET		16
-#define	ATMEL_LCDC_VPW		(0x3f << ATMEL_LCDC_VPW_OFFSET)
+#define	ATMEL_LCDC_VPW		(0x3fU << ATMEL_LCDC_VPW_OFFSET)
 #define	ATMEL_LCDC_VHDLY_OFFSET		24
-#define	ATMEL_LCDC_VHDLY	(0xf  << ATMEL_LCDC_VHDLY_OFFSET)
+#define	ATMEL_LCDC_VHDLY	(0xfU  << ATMEL_LCDC_VHDLY_OFFSET)
 
 #define ATMEL_LCDC_TIM2		0x080c
-#define	ATMEL_LCDC_HBP		(0xff  <<  0)
+#define	ATMEL_LCDC_HBP		(0xffU  <<  0)
 #define	ATMEL_LCDC_HPW_OFFSET		8
-#define	ATMEL_LCDC_HPW		(0x3f  <<  ATMEL_LCDC_HPW_OFFSET)
+#define	ATMEL_LCDC_HPW		(0x3fU  <<  ATMEL_LCDC_HPW_OFFSET)
 #define	ATMEL_LCDC_HFP_OFFSET		21
-#define	ATMEL_LCDC_HFP		(0x7ff << ATMEL_LCDC_HFP_OFFSET)
+#define	ATMEL_LCDC_HFP		(0x7ffU << ATMEL_LCDC_HFP_OFFSET)
 
 #define ATMEL_LCDC_LCDFRMCFG	0x0810
 #define	ATMEL_LCDC_LINEVAL	(0x7ff <<  0)