[U-Boot] [PATCH] mtd: spi: winbond: add W25PXX support

[Kuo-Jung Su]

2013/5/23 Jagan Teki <jagannadh.teki at gmail.com>:
> Hi,
>
> On Wed, May 22, 2013 at 6:31 AM, Kuo-Jung Su <dantesu at gmail.com> wrote:
>> 2013/5/22 Jagan Teki <jagannadh.teki at gmail.com>:
>>> Hi,
>>>
>>> I have a simple question like these parts are legacy flashes i guess.
>>> Could you please tell me on which boards these were used?
>>>
>>
>> It's used on Faraday A369 evaluation board.
>> However the u-boot source codes for A369 is still waiting for approval.
>> Here is the link to u-boot patchwork:
>
> Ok, Thanks for your information.
>
>>
>> http://patchwork.ozlabs.org/patch/242006/
>>
>>> Thanks,
>>> Jagan.
>>>
>>> On Fri, Apr 26, 2013 at 1:32 PM, Kuo-Jung Su <dantesu at gmail.com> wrote:
>>>> From: Kuo-Jung Su <dantesu at faraday-tech.com>
>>>>
>>>> Signed-off-by: Kuo-Jung Su <dantesu at faraday-tech.com>
>>>> ---
>>>>  drivers/mtd/spi/winbond.c |   17 ++++++++++++++++-
>>>>  1 file changed, 16 insertions(+), 1 deletion(-)
>>>>
>>>> diff --git a/drivers/mtd/spi/winbond.c b/drivers/mtd/spi/winbond.c
>>>> index 2716209..2a27837 100644
>>>> --- a/drivers/mtd/spi/winbond.c
>>>> +++ b/drivers/mtd/spi/winbond.c
>>>> @@ -18,6 +18,21 @@ struct winbond_spi_flash_params {
>>>>
>>>>  static const struct winbond_spi_flash_params winbond_spi_flash_table[] = {
>>>>         {
>>>> +               .id                     = 0x2014,
>>>> +               .nr_blocks              = 16,
>>>> +               .name                   = "W25P80",
>
> W25P80 is an 8Mbit flash right, is this name W25P80 or W25P08?
> ofcourse, I have seen the same on datasheet as well.
>

It's W25P80.
They are formally NexFlash NX25P80, NX25P16 and NX25P32.

I've google for the W25P08, it looks like that Windond did have
some legacy small SPI flash: W25P01, W25P02 .. W25P16.
I guess it's a different production line...

BTW I don't have these chips and corresponding datasheet, too.

> Thanks,
> Jagan.
>
>>>> +       },
>>>> +       {
>>>> +               .id                     = 0x2015,
>>>> +               .nr_blocks              = 32,
>>>> +               .name                   = "W25P16",
>>>> +       },
>>>> +       {
>>>> +               .id                     = 0x2016,
>>>> +               .nr_blocks              = 64,
>>>> +               .name                   = "W25P32",
>>>> +       },
>>>> +       {
>>>>                 .id                     = 0x3013,
>>>>                 .nr_blocks              = 8,
>>>>                 .name                   = "W25X40",
>>>> @@ -104,7 +119,7 @@ struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode)
>>>>         }
>>>>
>>>>         flash->page_size = 256;
>>>> -       flash->sector_size = 4096;
>>>> +       flash->sector_size = (idcode[1] == 0x20) ? 65536 : 4096;
>>>>         flash->size = 4096 * 16 * params->nr_blocks;
>>>>
>>>>         return flash;
>>>> --
>>>> 1.7.9.5
>>>>
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>>
>>
>>
>> --
>> Best wishes,
>> Kuo-Jung Su



--
Best wishes,
Kuo-Jung Su