Re: [U-Boot] [PATCH 3/4] cfi_flash: Enable PPB protection for all AMD cmdset flash chips

7 Dec 2012


      Hi Stefan,
On 12/06/2012 03:44 PM, Stefan Roese wrote:
...
Not only Spansion supports the Persistent Protection Bits (PPB) locking.
Other devices like the Micron JS28F512M29EWx also support this type
of locking/unlocking. Detection of support is done in the same way as
done for the Spansion chips - via the 0x49 CFI word.
This patch enables this PPB protection mechanism for all AMD type
(AMD commandset) chips.
Signed-off-by: Stefan Roese sr@denx.de
Cc: Anatolij Gustschin agust@denx.de
Cc: Holger Brunck holger.brunck@keymile.com

drivers/mtd/cfi_flash.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)
Tested-by: Holger Brunck holger.brunck@keymile.com
Regards
Holger