Re: Devicetree: Initialization order of mmc block devices?

[Jassi Brar <jaswinder.singh@xxxxxxxxxx>]

On 18 July 2012 11:56, Dirk Behme <dirk.behme@xxxxxxxxxxxx> wrote:
>
> Similar to [1] we have a device which has two mmc block devices connected:
> One external removable and a second internal hard wired one. Depending on
> the availability of the external removable mmc card at boot time, the
> internal hard wired device becomes mmcblk1 (external mmc card available ==
> mmcblk0) or mmcblk0 if the external one is not there. This order is given by
> the hardware.
>
> With older, non-DT kernels, we used the hack from [2] to control the
> initialization order and force the internal hard wired device to mmcblk0.
>
> Now, we are switching to a newer, DT based kernel. With a DT based kernel
> this hack doesn't seem to work an more.
>
> Any idea how we could influence the initialization order of the mmc block
> devices using a DT based kernel? Ensuring that the internal, hard wired mmc
> card is always mapped to mmcblk0?
>
Doesn't it work by simply by moving the "internal" element before
"external" in the array 'struct twl4030_hsmmc_info mmc[]' ?

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