diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 4e40de4..621fa68 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -190,22 +190,27 @@
 };
 
 static struct pxa3xx_nand_timing timing[] = {
-	{ 10,  0, 20, 40, 30, 40, 11123, 110, 10, },
-	{ 10, 25, 15, 25, 15, 30, 25000,  60, 10, },
-	{ 10, 35, 15, 25, 15, 25, 25000,  60, 10, },
+	{ 40, 80, 60, 100, 80, 100, 90000, 400, 40, },
+	{ 10,  0, 20,  40, 30,  40, 11123, 110, 10, },
+	{ 10, 25, 15,  25, 15,  30, 25000,  60, 10, },
+	{ 10, 35, 15,  25, 15,  25, 25000,  60, 10, },
 };
 
 static struct pxa3xx_nand_flash builtin_flash_types[] = {
-	{ 0x46ec,  32,  512, 16, 16, 4096, &default_cmdset, &timing[0] },
-	{ 0xdaec,  64, 2048,  8,  8, 2048, &default_cmdset, &timing[0] },
-	{ 0xd7ec, 128, 4096,  8,  8, 8192, &default_cmdset, &timing[0] },
-	{ 0xa12c,  64, 2048,  8,  8, 1024, &default_cmdset, &timing[1] },
-	{ 0xb12c,  64, 2048, 16, 16, 1024, &default_cmdset, &timing[1] },
-	{ 0xdc2c,  64, 2048,  8,  8, 4096, &default_cmdset, &timing[1] },
-	{ 0xcc2c,  64, 2048, 16, 16, 4096, &default_cmdset, &timing[1] },
-	{ 0xba20,  64, 2048, 16, 16, 2048, &default_cmdset, &timing[2] },
+	{      0,   0, 2048,  8,  8,    0, &default_cmdset, &timing[0] },
+	{ 0x46ec,  32,  512, 16, 16, 4096, &default_cmdset, &timing[1] },
+	{ 0xdaec,  64, 2048,  8,  8, 2048, &default_cmdset, &timing[1] },
+	{ 0xd7ec, 128, 4096,  8,  8, 8192, &default_cmdset, &timing[1] },
+	{ 0xa12c,  64, 2048,  8,  8, 1024, &default_cmdset, &timing[2] },
+	{ 0xb12c,  64, 2048, 16, 16, 1024, &default_cmdset, &timing[2] },
+	{ 0xdc2c,  64, 2048,  8,  8, 4096, &default_cmdset, &timing[2] },
+	{ 0xcc2c,  64, 2048, 16, 16, 4096, &default_cmdset, &timing[2] },
+	{ 0xba20,  64, 2048, 16, 16, 2048, &default_cmdset, &timing[3] },
 };
 
+/* Define a default flash type setting serve as flash detecting only */
+#define DEFAULT_FLASH_TYPE (&builtin_flash_types[0])
+
 #define NDTR0_tCH(c)	(min((c), 7) << 19)
 #define NDTR0_tCS(c)	(min((c), 7) << 16)
 #define NDTR0_tWH(c)	(min((c), 7) << 11)
@@ -945,36 +950,29 @@
 		if (pxa3xx_nand_detect_config(info) == 0)
 			return 0;
 
-	for (i = 0; i<pdata->num_flash; ++i) {
-		f = pdata->flash + i;
+	/* we use default timing to detect id */
+	f = DEFAULT_FLASH_TYPE;
+	pxa3xx_nand_config_flash(info, f);
+	if (__readid(info, &id))
+		goto fail_detect;
 
-		if (pxa3xx_nand_config_flash(info, f))
-			continue;
-
-		if (__readid(info, &id))
-			continue;
-
-		if (id == f->chip_id)
+	for (i=0; i<ARRAY_SIZE(builtin_flash_types) + pdata->num_flash - 1; i++) {
+		/* we first choose the flash definition from platfrom */
+		if (i < pdata->num_flash)
+			f = pdata->flash + i;
+		else
+			f = &builtin_flash_types[i - pdata->num_flash + 1];
+		if (f->chip_id == id) {
+			dev_info(&info->pdev->dev, "detect chip id: 0x%x\n", id);
+			pxa3xx_nand_config_flash(info, f);
 			return 0;
-	}
-
-	for (i = 0; i < ARRAY_SIZE(builtin_flash_types); i++) {
-
-		f = &builtin_flash_types[i];
-
-		if (pxa3xx_nand_config_flash(info, f))
-			continue;
-
-		if (__readid(info, &id))
-			continue;
-
-		if (id == f->chip_id)
-			return 0;
+		}
 	}
 
 	dev_warn(&info->pdev->dev,
 		 "failed to detect configured nand flash; found %04x instead of\n",
 		 id);
+fail_detect:
 	return -ENODEV;
 }