[PATCH] mmc: sdhci-esdhc-imx: support voltage-range property

[Ulf Hansson]

On 24 March 2015 at 14:45, Marc Kleine-Budde <mkl at pengutronix.de> wrote:
> From: Sascha Hauer <s.hauer at pengutronix.de>
>
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> Signed-off-by: Marc Kleine-Budde <mkl at pengutronix.de>

Thanks! Applied.

Kind regards
Uffe


> ---
>  Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt | 4 ++++
>  drivers/mmc/host/sdhci-esdhc-imx.c                      | 6 +++++-
>  2 files changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt
> index 9046ba06c47a..415c5575cbf7 100644
> --- a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt
> +++ b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt
> @@ -17,6 +17,10 @@ Optional properties:
>    to select a proper data sampling window in case the clock quality is not good
>    due to signal path is too long on the board. Please refer to eSDHC/uSDHC
>    chapter, DLL (Delay Line) section in RM for details.
> +- voltage-ranges : Specify the voltage range in case there are software
> +  transparent level shifters on the outputs of the controller. Two cells are
> +  required, first cell specifies minimum slot voltage (mV), second cell
> +  specifies maximum slot voltage (mV). Several ranges could be specified.
>
>  Examples:
>
> diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
> index 10ef8244a239..a85fb3181ded 100644
> --- a/drivers/mmc/host/sdhci-esdhc-imx.c
> +++ b/drivers/mmc/host/sdhci-esdhc-imx.c
> @@ -864,6 +864,7 @@ static const struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = {
>  #ifdef CONFIG_OF
>  static int
>  sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
> +                        struct sdhci_host *host,
>                          struct esdhc_platform_data *boarddata)
>  {
>         struct device_node *np = pdev->dev.of_node;
> @@ -900,11 +901,14 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
>         if (of_property_read_u32(np, "fsl,delay-line", &boarddata->delay_line))
>                 boarddata->delay_line = 0;
>
> +       mmc_of_parse_voltage(np, &host->ocr_mask);
> +
>         return 0;
>  }
>  #else
>  static inline int
>  sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
> +                        struct sdhci_host *host,
>                          struct esdhc_platform_data *boarddata)
>  {
>         return -ENODEV;
> @@ -999,7 +1003,7 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
>                         host->ioaddr + ESDHC_TUNING_CTRL);
>
>         boarddata = &imx_data->boarddata;
> -       if (sdhci_esdhc_imx_probe_dt(pdev, boarddata) < 0) {
> +       if (sdhci_esdhc_imx_probe_dt(pdev, host, boarddata) < 0) {
>                 if (!host->mmc->parent->platform_data) {
>                         dev_err(mmc_dev(host->mmc), "no board data!\n");
>                         err = -EINVAL;
> --
> 2.1.4
>
> --
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