root@j7-evm:~# nandtest /dev/mtd0 -p 20
ECC corrections: 0
ECC failures   : 0
Bad blocks     : 0
BBT blocks     : 0
07fc0000: checking...of 4)...
Finished pass 1 successfully
07fc0000: checking...of 4)...
Finished pass 2 successfully
07fc0000: checking...of 4)...
Finished pass 3 successfully
07fc0000: checking...of 4)...
Finished pass 4 successfully
07fc0000: checking...of 4)...
Finished pass 5 successfully
07fc0000: checking...of 4)...
Finished pass 6 successfully
07fc0000: checking...of 4)...
Finished pass 7 successfully
07fc0000: checking...of 4)...
Finished pass 8 successfully
07fc0000: checking...of 4)...
Finished pass 9 successfully
07fc0000: checking...of 4)...
Finished pass 10 successfully
07fc0000: checking...of 4)...
Finished pass 11 successfully
07fc0000: checking...of 4)...
Finished pass 12 successfully
07fc0000: checking...of 4)...
Finished pass 13 successfully
07fc0000: checking...of 4)...
Finished pass 14 successfully
07fc0000: checking...of 4)...
Finished pass 15 successfully
07fc0000: checking...of 4)...
Finished pass 16 successfully
07fc0000: checking...of 4)...
Finished pass 17 successfully
07fc0000: checking...of 4)...
Finished pass 18 successfully
07fc0000: checking...of 4)...
Finished pass 19 successfully
07fc0000: checking...of 4)...
Finished pass 20 successfully