Re: specifying order of /dev/mmcblk devices via device-tree?

Hi Tim,

On Fri, Oct 28, 2016 at 1:23 PM, Tim Harvey [off-list ref] 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?

You could use UUID to specify the rootfs location on your board.

Please check:
http://git.denx.de/?p=u-boot.git;a=commit;h=ca4f338e2efece5196eb2178e5f7d07be828da6e
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