[PATCH 2/6] mmc: sdhci-esdhc-imx: add tuning-step seting support

[Shawn Guo]

On Wed, Jun 10, 2015 at 04:50:40PM +0800, Haibo Chen wrote:
> @@ -969,6 +976,8 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
>  
>  	of_property_read_u32(np, "max-frequency", &boarddata->f_max);
>  
> +	of_property_read_u32(np, "tuning-step", &boarddata->tuning_step);
> +

Where is the binding doc for this device tree property?

Shawn