On 28 October 2016 at 17:37, Mark Rutland <mark.rutland@xxxxxxx> wrote: > On Fri, Oct 28, 2016 at 08:23:04AM -0700, Tim Harvey wrote: >> Greetings, >> >> I have an IMX6 board that has the following: >> sdhc1: mmc0: sdio radio >> sdhc2: mmc1: /dev/mmcblk1: microSD connector >> sdhc3: mmc2: /dev/mmcblk2: on-board eMMC >> >> I would like to have sdhc3 registered as /dev/mmcblk0 and sdhc2 >> registered as /dev/mmcblk1 so that permanent storage is the first >> mmcblk device as I think this is more intuitive however currently >> these get instanced in the order they appear in the imx6qdl.dtsi >> device-tree configuration and are not able to be mapped the way I want >> them in my dts file. >> >> Is there a way, or if not is there a desire for a way, to specify the >> order of /dev/mmcblk devices via device-tree? > > As with many other devices, there is no standard way of controlling the > Linux enumeration (and given the ID space is shared with other dynamic > devices it's not something that could generally work). > > These should be refererd to by UUID if possible. > > If not, we could cosider adding a by-dt-path or something like that. So does that mean you think using "DT aliases" would be okay? As Javier pointed out, there have been some attempts [1] for that, but they didn't make it. Perhaps we need to re-consider, and if so please re-review the DT bindings patch from that series. Kind regards Uffe [1] https://lkml.org/lkml/2016/4/29/610 or http://www.spinics.net/lists/linux-mmc/msg36701.html -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
