lkml.org 
[lkml]   [2022]   [Jul]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH 2/3] mtd: spi-nor: add support for Quad Page Program to no_sfdp_flags
On Mon, Jul 18, 2022 at 6:02 PM <Tudor.Ambarus@microchip.com> wrote:
>
> On 7/12/22 19:38, Sudip Mukherjee wrote:
> > [You don't often get email from sudip.mukherjee@sifive.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
> >
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> >
> > Some flash chips which does not have a SFDP table can support Quad
> > Input Page Program. Enable it in hwcaps if defined.
> >

<snip>

> > diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
> > index 58fbedc94080f..dde636bdb1a7c 100644
> > --- a/drivers/mtd/spi-nor/core.h
> > +++ b/drivers/mtd/spi-nor/core.h
> > @@ -462,6 +462,7 @@ struct spi_nor_fixups {
> > * SPI_NOR_OCTAL_READ: flash supports Octal Read.
> > * SPI_NOR_OCTAL_DTR_READ: flash supports octal DTR Read.
> > * SPI_NOR_OCTAL_DTR_PP: flash supports Octal DTR Page Program.
> > + * SPI_NOR_QUAD_PP: flash supports Quad Input Page Program.
>
> You don't need this flag if your flash supports the 4-byte Address
> Instruction Table. Does you flash support it? Can you dump all the
> SFDP tables, please?

Not sure what the correct way to dump sfdp is. I did this from sysfs.

# cat sfdp | xxd
00000000: 5346 4450 0601 01ff 0006 0110 3000 00ff SFDP........0...
00000010: 9d05 0103 8000 0002 ffff ffff ffff ffff ................
00000020: ffff ffff ffff ffff ffff ffff ffff ffff ................
00000030: e520 f9ff ffff ff0f 44eb 086b 083b 80bb . ......D..k.;..
00000040: feff ffff ffff 00ff ffff 44eb 0c20 0f52 ..........D.. .R
00000050: 10d8 00ff 234a c900 82d8 11ce cccd 6846 ....#J........hF
00000060: 7a75 7a75 f7ae d55c 4a42 2cff f030 faa9 zuzu...\JB,..0..
00000070: ffff ffff ffff ffff ffff ffff ffff ffff ................
00000080: 5019 5016 9ff9 c064 8fef ffff P.P....d....


--
Regards
Sudip

\
 
 \ /
  Last update: 2022-07-18 20:50    [W:0.068 / U:0.696 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site