diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index da40b9a..5658398 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -225,7 +225,13 @@ const static struct pxa3xx_nand_cmdset cmdset = {
 	.lock_status	= 0x007A,
 };

+/**
+ * The timing defined in the builtin_flash_types[0]
+ * could be considered as the common timing which is used to
+ * detect the chip id before we know how to optimize further
+ */
 static struct pxa3xx_nand_flash __devinitdata builtin_flash_types[] = {
+{ 0, 0, 0, 0, 0, 0, { 40, 80, 60, 100, 80, 100, 90000, 400, 40, }, },
 { 0x46ec, 32, 512, 16, 16, 4096, { 10, 0, 20, 40, 30, 40, 11123, 110, 10, }, },
 { 0xdaec, 64, 2048, 8, 8, 2048, { 10, 0, 20, 40, 30, 40, 11123, 110, 10, }, },
 { 0xd7ec, 128, 4096, 8, 8, 8192, { 10, 0, 20, 40, 30, 40, 11123, 110, 10, }, },
@@ -850,12 +856,6 @@ static int pxa3xx_nand_config_flash(struct
pxa3xx_nand_info *info,
 	struct pxa3xx_nand_platform_data *pdata = pdev->dev.platform_data;
 	uint32_t ndcr = 0x00000FFF; /* disable all interrupts */

-	if (f->page_size != 2048 && f->page_size != 512)
-		return -EINVAL;
-
-	if (f->flash_width != 16 && f->flash_width != 8)
-		return -EINVAL;
-
 	/* calculate flash information */
 	info->oob_size = (f->page_size == 2048) ? 64 : 16;