Am Montag, den 14.10.2013, 16:23 +0800 schrieb Shawn Guo:
> Add flag ESDHC_FLAG_ENGCM07207 for enabling the workaround for errata
> ENGcm07207 and set the flag for i.MX25 and i.MX35 ESDHC.
>
> Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxx>
> ---
> drivers/mmc/host/sdhci-esdhc-imx.c | 10 +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
> index e046917..a5d7d15 100644
> --- a/drivers/mmc/host/sdhci-esdhc-imx.c
> +++ b/drivers/mmc/host/sdhci-esdhc-imx.c
> @@ -89,6 +89,11 @@
> * exeception. Bit1 of Vendor Spec registor is used to fix it.
> */
> #define ESDHC_FLAG_MULTIBLK_NO_INT BIT(1)
> +/*
> + * The flag enables the workaround for ESDHC errata ENGcm07207 which
> + * presents on i.MX25 and i.MX35.
s/presents/is present/
> + */
> +#define ESDHC_FLAG_ENGCM07207 BIT(2)
>
> enum imx_esdhc_type {
> IMX25_ESDHC,
> @@ -865,6 +870,9 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
> if (is_imx25_esdhc(imx_data))
> imx_data->flags |= ESDHC_FLAG_NO_DMAS_BITS;
>
> + if (is_imx25_esdhc(imx_data) || is_imx35_esdhc(imx_data))
> + imx_data->flags |= ESDHC_FLAG_ENGCM07207;
> +
> imx_data->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
> if (IS_ERR(imx_data->clk_ipg)) {
> err = PTR_ERR(imx_data->clk_ipg);
> @@ -905,7 +913,7 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
>
> host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
>
> - if (is_imx25_esdhc(imx_data) || is_imx35_esdhc(imx_data))
> + if (imx_data->flags & ESDHC_FLAG_ENGCM07207)
> /* Fix errata ENGcm07207 present on i.MX25 and i.MX35 */
> host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK
> | SDHCI_QUIRK_BROKEN_ADMA;
--
Pengutronix e.K. | Lucas Stach |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-5076 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
