On 28 June 2018 at 09:31, Stefan Agner <stefan@xxxxxxxx> wrote:
> The uSDHC supports DDR modes for eMMC devices running at 3.3V. This
> allows to run eMMC with 3.3V signaling voltage at DDR52 mode:
>
> # cat /sys/kernel/debug/mmc1/ios
> clock: 52000000 Hz
> vdd: 21 (3.3 ~ 3.4 V)
> bus mode: 2 (push-pull)
> chip select: 0 (don't care)
> power mode: 2 (on)
> bus width: 3 (8 bits)
> timing spec: 8 (mmc DDR52)
> signal voltage: 0 (3.30 V)
> driver type: 0 (driver type B)
>
> Signed-off-by: Stefan Agner <stefan@xxxxxxxx>
Thanks, applied for next!
Kind regards
Uffe
> ---
> drivers/mmc/host/sdhci-esdhc-imx.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
> index b716b933f00a..6f444731754d 100644
> --- a/drivers/mmc/host/sdhci-esdhc-imx.c
> +++ b/drivers/mmc/host/sdhci-esdhc-imx.c
> @@ -1324,7 +1324,7 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
>
> if (esdhc_is_usdhc(imx_data)) {
> host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
> - host->mmc->caps |= MMC_CAP_1_8V_DDR;
> + host->mmc->caps |= MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR;
> if (!(imx_data->socdata->flags & ESDHC_FLAG_HS200))
> host->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200;
>
> --
> 2.18.0
>
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