[U-Boot] [PATCH] driver/mtd: Add MICRON manufacturer id in spi framework

[Yogesh Narayan Gaur]

Hi Jagan,

> -----Original Message-----
> From: U-Boot [mailto:u-boot-bounces at lists.denx.de] On Behalf Of Ashish
> Kumar
> Sent: Wednesday, October 10, 2018 4:23 PM
> To: Jagan Teki <jagan at amarulasolutions.com>
> Cc: U-Boot-Denx <u-boot at lists.denx.de>; Jagan Teki <jagan at openedev.com>;
> Rajat Srivastava <rajat.srivastava at nxp.com>; Suresh Gupta
> <suresh.gupta at nxp.com>
> Subject: Re: [U-Boot] [PATCH] driver/mtd: Add MICRON manufacturer id in spi
> framework
> 
> > -----Original Message-----
> > From: Jagan Teki <jagan at amarulasolutions.com>
> > Sent: Wednesday, October 10, 2018 11:51 AM
> > To: Ashish Kumar <ashish.kumar at nxp.com>
> > Cc: U-Boot-Denx <u-boot at lists.denx.de>; Jagan Teki
> > <jagan at openedev.com>; Rajat Srivastava <rajat.srivastava at nxp.com>;
> > Suresh Gupta <suresh.gupta at nxp.com>
> > Subject: Re: [U-Boot] [PATCH] driver/mtd: Add MICRON manufacturer id
> > in spi framework
> >
> > On Tue, Sep 25, 2018 at 2:13 PM Ashish Kumar <Ashish.Kumar at nxp.com>
> > wrote:
> > >
> > > Signed-off-by: Suresh Gupta <suresh.gupta at nxp.com>
> > > Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur at nxp.com>
> > > Signed-off-by: Ashish Kumar <Ashish.Kumar at nxp.com>
> > > ---
> > >  drivers/mtd/spi/sf_internal.h | 1 +
> > >  drivers/mtd/spi/spi_flash.c   | 2 ++
> > >  2 files changed, 3 insertions(+)
> > >
> > > diff --git a/drivers/mtd/spi/sf_internal.h
> > > b/drivers/mtd/spi/sf_internal.h index 4f63cacc64..26f5c7c995 100644
> > > --- a/drivers/mtd/spi/sf_internal.h
> > > +++ b/drivers/mtd/spi/sf_internal.h
> > > @@ -32,6 +32,7 @@ enum spi_nor_option_flags {
> > >  /* CFI Manufacture ID's */
> > >  #define SPI_FLASH_CFI_MFR_SPANSION     0x01
> > >  #define SPI_FLASH_CFI_MFR_STMICRO      0x20
> > > +#define SPI_FLASH_CFI_MFR_MICRON       0x2C
> >
> > Why we need this? is it to support old micron chips?
> 
> NOR flash name MT35X_QLKA and MT25Q_** used on NXP board has
> manufacturer id as 0x2C, which are rather for newer flashes after the split of
> Micron from ST.
> 

Same is being discussed in Linux-mtd mailing list [1].
Public data sheet of MT35x flash can be checked at[2]

--
Regards
Yogesh Gaur.
[1] https://patchwork.ozlabs.org/patch/971439/
[2] https://www.micron.com/resource-details/0b74b806-bbf1-4c24-b07b-35e2799bb6ff

> Regards
> Ashish
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