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    SubjectRe: [PATCH] mmc: dw_mmc: Fix DDR mode support.
    From
    On Fri, Aug 5, 2011 at 4:35 AM, Seungwon Jeon <tgih.jun@samsung.com> wrote:
    > Host driver can't get a hint of DDR mode through ios->ddr flag anymore.
    > ios->timing is currently used to inform DDR mode as a substitute.
    > And capability of MMC_CAP_MMC_HIGHSPEED is added for DDR support.
    >
    > Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
    > ---
    >  drivers/mmc/host/dw_mmc.c |    4 ++--
    >  1 files changed, 2 insertions(+), 2 deletions(-)
    >
    > diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
    > index d65511e..b412a1d 100644
    > --- a/drivers/mmc/host/dw_mmc.c
    > +++ b/drivers/mmc/host/dw_mmc.c
    > @@ -699,7 +699,7 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
    >        }
    >
    >        /* DDR mode set */
    > -       if (ios->ddr) {
    > +       if (ios->timing == MMC_TIMING_UHS_DDR50) {
    >                regs = mci_readl(slot->host, UHS_REG);
    >                regs |= (0x1 << slot->id) << 16;
    >                mci_writel(slot->host, UHS_REG, regs);
    > @@ -1646,7 +1646,7 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id)
    >                        mmc->caps |= MMC_CAP_4_BIT_DATA;
    >
    >        if (host->pdata->quirks & DW_MCI_QUIRK_HIGHSPEED)
    > -               mmc->caps |= MMC_CAP_SD_HIGHSPEED;
    > +               mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
    >
    >  #ifdef CONFIG_MMC_DW_IDMAC
    >        mmc->max_segs = host->ring_size;
    > --
    > 1.7.0.4

    Acked-by: Will Newton <will.newton@imgtec.com>
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