[U-Boot] [U-BOOT][PATCH] mmc: support the revision check for eMMC4.5

[Marek Vasut]

Dear Jae hoon Chung,

> Hi,
> 
> Anybody think about this patch?
> mmcinfo is produce correctly?
> 
> if i miss something, let me know, plz.

Andy?

> Best Regards,
> Jaehoon Chung
> 
> 2012/3/27 Jaehoon Chung <jh80.chung at samsung.com>:
> > eMMC card is introduced the eMMC4.5.
> > But now eMMC card is checked up to eMMC4.0.
> > This patch is supported until eMMC4.5
> > 
> > Signed-off-by: Jaehoon Chung <jh80.chung at samsung.com>
> > Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
> > ---
> >  common/cmd_mmc.c  |    5 ++++-
> >  drivers/mmc/mmc.c |   25 +++++++++++++++++++++++++
> >  include/mmc.h     |    8 ++++++++
> >  3 files changed, 37 insertions(+), 1 deletions(-)
> > 
> > diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c
> > index 8f13c22..ff150ca 100644
> > --- a/common/cmd_mmc.c
> > +++ b/common/cmd_mmc.c
> > @@ -106,7 +106,10 @@ static void print_mmcinfo(struct mmc *mmc)
> >        printf("Rd Block Len: %d\n", mmc->read_bl_len);
> > 
> >        printf("%s version %d.%d\n", IS_SD(mmc) ? "SD" : "MMC",
> > -                       (mmc->version >> 4) & 0xf, mmc->version & 0xf);
> > +                       (mmc->version >> 4) & 0xf,
> > +                       (mmc->version & 0xf) == EXT_CSD_REV_1_5 ?
> > +                       41 :((mmc->version & 0xf) > EXT_CSD_REV_1_5 ?
> > +                       (mmc->version & 0xf) - 1 : (mmc->version &
> > 0xf)));
> > 
> >        printf("High Capacity: %s\n", mmc->high_capacity ? "Yes" : "No");
> >        puts("Capacity: ");
> > diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
> > index 49c3349..e035012 100644
> > --- a/drivers/mmc/mmc.c
> > +++ b/drivers/mmc/mmc.c
> > @@ -651,6 +651,31 @@ int mmc_change_freq(struct mmc *mmc)
> >        if (err)
> >                return err;
> > 
> > +       switch (ext_csd[EXT_CSD_REV]) {
> > +       case EXT_CSD_REV_1_0:
> > +               mmc->version |= EXT_CSD_REV_1_0;
> > +               break;
> > +       case EXT_CSD_REV_1_1:
> > +               mmc->version |= EXT_CSD_REV_1_1;
> > +               break;
> > +       case EXT_CSD_REV_1_2:
> > +               mmc->version |= EXT_CSD_REV_1_2;
> > +               break;
> > +       case EXT_CSD_REV_1_3:
> > +               mmc->version |= EXT_CSD_REV_1_3;
> > +               break;
> > +       case EXT_CSD_REV_1_5:
> > +               mmc->version |= EXT_CSD_REV_1_5;
> > +               break;
> > +       case EXT_CSD_REV_1_6:
> > +               mmc->version |= EXT_CSD_REV_1_6;
> > +               break;
> > +       case EXT_CSD_REV_1_4:
> > +       default:
> > +               printf("Unknown revision - %x\n", ext_csd[EXT_CSD_REV]);
> > +               return 0;
> > +       }
> > +
> >        /* No high-speed support */
> >        if (!ext_csd[EXT_CSD_HS_TIMING])
> >                return 0;
> > diff --git a/include/mmc.h b/include/mmc.h
> > index 30c2375..726da99 100644
> > --- a/include/mmc.h
> > +++ b/include/mmc.h
> > @@ -157,6 +157,14 @@
> >  #define EXT_CSD_SEC_CNT                        212     /* RO, 4 bytes */
> >  #define EXT_CSD_HC_ERASE_GRP_SIZE      224     /* RO */
> > 
> > +#define EXT_CSD_REV_1_0                        0
> > +#define EXT_CSD_REV_1_1                        1
> > +#define EXT_CSD_REV_1_2                        2
> > +#define EXT_CSD_REV_1_3                        3
> > +#define EXT_CSD_REV_1_4                        4
> > +#define EXT_CSD_REV_1_5                        5
> > +#define EXT_CSD_REV_1_6                        6
> > +
> >  /*
> >  * EXT_CSD field definitions
> >  */
> > --
> > 1.7.4.1
> > _______________________________________________
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> > U-Boot at lists.denx.de
> > http://lists.denx.de/mailman/listinfo/u-boot
> 
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