protect off says timeout in uboot with nand config on bf537-stamp.
U-Boot 2013.07 (ADI-2013R1)-00370-g7e333a2-dirty (Sep 13 2013 - 16:07:09), Build: jenkins-label=UBOOT_BF537-STAMP-53
CPU: ADSP bf537-0.2 (Detected Rev: 0.2) (bypass boot)
Board: ADI BF537 stamp board
Support: http://blackfin.uclinux.org/
Clock: VCO: 500 MHz, Core: 500 MHz, System: 125 MHz
RAM: 64 MiB
Flash: 4 MiB
NAND: 128 MiB
In: serial
Out: serial
Err: serial
KGDB: [on serial] ready
Net: bfin_mac
Hit any key to stop autoboot: 0
bfin>
bfin> protect off 0x20040000 0x202fffff
............................Flash unprotect timeout at address 20200000 data 7f7f7f7f
.Flash unprotect timeout at address 20210000 data ffffffff
.Flash unprotect timeout at address 20220000 data 7f7f7f7f
.Flash unprotect timeout at address 20230000 data ffffffff
.Flash unprotect timeout at address 20240000 data 7f7f7f7f
..Flash unprotect timeout at address 20260000 data ffffffff
.Flash unprotect timeout at address 20270000 data 7f7f7f7f
...Flash unprotect timeout at address 202a0000 data 7f7f7f7f
.Flash unprotect timeout at address 202b0000 data ffffffff
.Flash unprotect timeout at address 202c0000 data 7f7f7f7f
..Flash unprotect timeout at address 202e0000 data ffffffff
.Flash unprotect timeout at address 202f0000 data 7f7f7f7f
. done
Un-Protected 44 sectors
while default uboot has no this issue.
Don't unprotect address after 0x20200000.