[PATCH 1/2] mtd: spi-nor: add Manufacturer ID for Micron

[Karl Zhang 张双锣 (karlzhang)]

> -----Original Message-----
> From: Brian Norris [mailto:computersforpeace at gmail.com]
> Sent: Thursday, December 10, 2015 10:45 AM
> To: Karl Zhang
> Cc: dwmw2 at infradead.org; linux-mtd at lists.infradead.org; Peter Pan 潘栋
> (peterpandong); Bean Huo 霍斌斌 (beanhuo); Zoltan Szubbocsev
> (zszubbocsev); Karl Zhang 张双锣 (karlzhang)
> Subject: Re: [PATCH 1/2] mtd: spi-nor: add Manufacturer ID for Micron
> 
> On Thu, Dec 10, 2015 at 01:58:59AM +0000, Karl Zhang wrote:
> > Micron Manufacturer ID assigned by JEDEC is 2Ch.
> > Add this ID, for new Spi NOR from Micron.
> >
> > ST's ID(20h) is Micron due to the history.
> >
> > Signed-off-by: Karl Zhang <karlzhang at micron.com>
> > ---
> >  include/linux/mtd/cfi.h     | 1 +
> >  include/linux/mtd/spi-nor.h | 2 ++
> >  2 files changed, 3 insertions(+)
> >
> > diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h index
> > 9b57a9b..cbf7716 100644
> > --- a/include/linux/mtd/cfi.h
> > +++ b/include/linux/mtd/cfi.h
> > @@ -377,6 +377,7 @@ struct cfi_fixup {
> >  #define CFI_MFR_SHARP		0x00B0
> >  #define CFI_MFR_SST		0x00BF
> >  #define CFI_MFR_ST		0x0020 /* STMicroelectronics */
> > +#define CFI_MFR_MICRON		0x002C /* Micron */
> >  #define CFI_MFR_TOSHIBA		0x0098
> >  #define CFI_MFR_WINBOND		0x00DA
> >
> > diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
> > index fac3f6f..b858e93 100644
> > --- a/include/linux/mtd/spi-nor.h
> > +++ b/include/linux/mtd/spi-nor.h
> > @@ -22,6 +22,8 @@
> >   */
> >  #define SNOR_MFR_ATMEL		CFI_MFR_ATMEL
> >  #define SNOR_MFR_INTEL		CFI_MFR_INTEL
> > +/* Micron Manufacturer ID assigned by JEDEC */
> > +#define SNOR_MFR_MICRON_JEDEC	CFI_MFR_MICRON
> 
> Is this the ID Micron is going to use going forward?
> 
> Brian
> 
The old products is using 0x20, but new product will going to use 0x2C.
Both of them are Micron.

Karl

> >  #define SNOR_MFR_MICRON		CFI_MFR_ST /* ST Micro <-->
> Micron */
> >  #define SNOR_MFR_MACRONIX	CFI_MFR_MACRONIX
> >  #define SNOR_MFR_SPANSION	CFI_MFR_AMD
> > --
> > 1.9.1
> >