Trying to create a new partition in nand flash memory (ALI M3627)

I am creating new partition in nand flash in ALI M3627 which is yaffs2, partition is created but flashing is not happening properly.

error log:

[read ERR] ali_nand_read_page_hwecc page = 0xc800, times=0
ecc error page #0x0000c800

[read ERR] ali_nand_read_page_hwecc page = 0xc800, times=1
ecc error page #0x0000c800

[read ERR] ali_nand_read_page_hwecc page = 0xc800, times=2
SOC reg:
 reg000 0x35050300
 reg054 0x00010010
 reg058 0x00110000
 reg060 0x00000000
 reg070 0x000560ef
 reg074 0x000000e0
 reg078 0x03300304
 reg07c 0x02000000
 reg084 0x02000000
 reg088 0x008011f0
 reg08c 0x00800003
 reg090 0x00000124
 reg0a4 0x00100000
 reg0d4 0x00000000
 reg0d8 0x00000000
 reg430 0x00110018
 reg434 0x00000000
 reg490 0x00000610
 reg494 0x00d00000
 reg1030 0x60006800
NAND reg: 

 nand reg[0x18] = 0x08
ecc error page #0x0000c800

[read ERR] ali_nand_read_page_hwecc page = 0xc800, times=0
ecc error page #0x0000c800

[read ERR] ali_nand_read_page_hwecc page = 0xc800, times=1
ecc error page #0x0000c800

[read ERR] ali_nand_read_page_hwecc page = 0xc800, times=2
SOC reg:
 reg000 0x35050300
 reg054 0x00010010
 reg058 0x00110000
 reg060 0x00000000
 reg070 0x000560ef
 reg074 0x000000e0
 reg078 0x03300304
 reg07c 0x02000000
 reg084 0x02000000
 reg088 0x008011f0
 reg08c 0x00800003
 reg090 0x00000124
 reg0a4 0x00100000
 reg0d4 0x00000000
 reg0d8 0x00000000
 reg430 0x00110018
 reg434 0x00000000
 reg490 0x00000610
 reg494 0x00d00000
 reg1030 0x60006800
NAND reg: 

 nand reg[0x18] = 0x08