Re: [PATCH] mtd: spi-nor: winbond: add support for W25Q512NW-IQ/IN

[Jae Hyun Yoo]

Hi Michael,

On 7/11/2022 2:50 AM, Michael Walle wrote:
> Hi,
>
> > Add support for Winbond W25Q512NW-IQ/IN
> >
> > datasheet:
> > https://www.winbond.com/resource-files/W25Q512NW%20RevB%2007192021.pdf
>
> Please add that as a Link: tag before your SoB tag.

Sure, I'll move it using the Link: tag in v2.

> > Test result on AST2600 SoC's SPI controller:
> > $ cat /sys/bus/platform/devices/1e620000.spi/spi_master/spi0/spi0.1/spi-nor/jedec_id
> > ef6020
> >
> > $ cat /sys/bus/platform/devices/1e620000.spi/spi_master/spi0/spi0.1/spi-nor/manufacturer
> > winbond
> >
> > $ cat /sys/bus/platform/devices/1e620000.spi/spi_master/spi0/spi0.1/spi-nor/partname
> > w25q512nwq
> >
> > $ hexdump /sys/bus/platform/devices/1e620000.spi/spi_master/spi0/spi0.1/spi-nor/sfdp
> > 0000000 4653 5044 0106 ff01 0600 1001 0080 ff00
> > 0000010 0084 0201 00d0 ff00 ffff ffff ffff ffff
> > 0000020 ffff ffff ffff ffff ffff ffff ffff ffff
> > *
> > 0000080 20e5 fffb ffff 1fff eb44 6b08 3b08 bb42
> > 0000090 fffe ffff ffff 0000 ffff eb40 200c 520f
> > 00000a0 d810 0000 0233 00a6 e781 d914 63e9 3376
> > 00000b0 757a 757a bdf7 5cd5 f719 ff5d 70e9 a5f9
> > 00000c0 ffff ffff ffff ffff ffff ffff ffff ffff
> > 00000d0 0aff fff0 ff21 ffdc
> > 00000d8
>
> This information goes below the --- line

I followed the commit 89051ff5dd3bfbdc95c315dc3377fc46dadddc7c but yes,
I'll move this information into the comment section.

> > Signed-off-by: Jae Hyun Yoo <quic_jaehyoo@xxxxxxxxxxx>
> > ---
> >   drivers/mtd/spi-nor/winbond.c | 3 +++
> >   1 file changed, 3 insertions(+)
> >
> > diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
> > index ffaa24055259..d6f1a3b7267e 100644
> > --- a/drivers/mtd/spi-nor/winbond.c
> > +++ b/drivers/mtd/spi-nor/winbond.c
> > @@ -133,6 +133,9 @@ static const struct flash_info winbond_nor_parts[] = {
> >   	{ "w25m512jv", INFO(0xef7119, 0, 64 * 1024, 1024)
> >   		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ |
> >   			      SPI_NOR_DUAL_READ) },
> > +	{ "w25q512nwq", INFO(0xef6020, 0, 64 * 1024, 1024)
>
> Please use INFO(0xef6020, 0, 0, 0) and test wether it will still
> work correctly. We will then be able to convert it to SNOR_ID3()
> later.

Tested it but it doesn't work with INFO(0xef6020, 0, 0, 0). I'll keep
it as is.

> > +		PARSE_SFDP
> > +		OTP_INFO(256, 3, 0x1000, 0x1000) },
>
> Did you test OTP?

Yes.

$ flash_otp_info -u /dev/mtd0
Number of OTP user blocks on /dev/mtd0: 3
block  0:  offset = 0x0000  size = 256 bytes  [unlocked]
block  1:  offset = 0x0100  size = 256 bytes  [unlocked]
block  2:  offset = 0x0200  size = 256 bytes  [unlocked]
$ flash_otp_dump -u /dev/mtd0 0x2d0
OTP user data for /dev/mtd0
0x02d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0x02e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0x02f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
$ echo -n otp test | flash_otp_write -u /dev/mtd0 0x2d0
Writing OTP user data on /dev/mtd0 at offset 0x2d0
Wrote 8 bytes of OTP user data
$ flash_otp_dump -u /dev/mtd0 0x2d0
OTP user data for /dev/mtd0
0x02d0: 6f 74 70 20 74 65 73 74 ff ff ff ff ff ff ff ff
0x02e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0x02f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
$ flash_otp_erase -u /dev/mtd0 0x200 0x100
$ flash_otp_dump -u /dev/mtd0 0x2d0
OTP user data for /dev/mtd0
0x02d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0x02e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0x02f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff

I'll add it to commit comment section too.

Thanks,

Jae

> -michael
>
> >   	{ "w25q512nwm", INFO(0xef8020, 0, 64 * 1024, 1024)
> >   		PARSE_SFDP
> >   		OTP_INFO(256, 3, 0x1000, 0x1000) },
> > --
> > 2.25.1