[U-Boot] [PATCH] mtd/cfi_flash: fix write problems for Numonyx P33/30 32 MBit flashs

[Stefan Roese]

Hi Holger,

thanks for this patch. I do have a minor comment though below.

On 08/08/2012 04:52 PM, Holger Brunck wrote:
> commit 54652991
> Work around bug in Numonyx P33/P30 256-Mbit 65nm flash chips
> 
> fixes a problem for Numonyx P33/P30 flashes for 256-Mbit, but this leads
> to problems for smaller versions of this chip e.g. the 32Mbit version
> with deviceid 0x16 on mgcoge. So move the code for this work around to
> an own function and check previously manufacturer id and device id to
> not break support for other flashes where this work around is not needed.
> 
> Signed-off-by: Holger Brunck <holger.brunck at keymile.com>
> Signed-off-by: Heiko Schocher <hs at denx.de>
> cc: Stefan Roese <sr at denx.de>
> cc: Philippe De Muyter <phdm at macqel.be>
> cc: Gerlando Falauto <gerlando.falauto at keymile.com>
> ---
>  drivers/mtd/cfi_flash.c |   70 +++++++++++++++++++++++++++++++---------------
>  1 files changed, 47 insertions(+), 23 deletions(-)
> 
> diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
> index 35294bc..690748d 100644
> --- a/drivers/mtd/cfi_flash.c
> +++ b/drivers/mtd/cfi_flash.c
> @@ -1391,6 +1391,43 @@ int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
>   */
>  #ifdef CONFIG_SYS_FLASH_PROTECTION
>  
> +#define INTEL_COMPAT		0x89
> +#define DEV_ID_NUMONYX_256MBIT	0x8922

Adding defines in the middle of the source is frowned upon.

Why don't you use INTEL_MANUFACT from flash.h instead. And add the
device id in this header as well? I would prefer this.

Thanks,
Stefan