On Thu, Jul 30, 2015 at 06:25:06PM +0200, Jan Lübbe wrote: > On Mi, 2015-07-29 at 17:03 +0800, Haibo Chen wrote: > > tuning-step is the delay cell steps in tuning procedure. The default > > value of tuning-step is 1. For imx6 series usdhc, tuning procedure can > > be passed when the tuning-step value is 1. But imx7d usdhc need the > > tuning-step value as 2, otherwise it can't pass the tuning procedure. > > > > So this patch add the tuning-step setting in driver, so that user can > > set the tuning-step value in dts. > > From your description, the correct tuning-step value only depends on the > SoC. Why not derive it from the compatible string? > 'tuning-step' actually depends on board and card. The commit message should be reformed a bit. Regards Dong Aisheng > Regards, > Jan Lübbe > -- > Pengutronix e.K. | | > Industrial Linux Solutions | http://www.pengutronix.de/ | > Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | > 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
