[meta-freescale] [3rdparty PATCH 0/4] Allow easier use of mainline-based BSP on i.MX products (Nitrogen6x support)

[Gary Bisson]

Hi Otavio,

First of all, thank you for this series and the great job you've done to
add mainline support, this is highly appreciated!

On Fri, Mar 24, 2017 at 05:12:12PM -0300, Otavio Salvador wrote:
> 
> This patchset makes use of the infrastructure added to meta-freescale
> to enable easier use of mainline-based BSP. To enable it, include:
> 
> MACHINEOVERRIDES .= ":use-mainline-bsp"
> 
> To the local.conf and everything is done automatically.
> 
> The bootscript still needs some love to work out of box but this will
> be left for Boundary Devices ;-)

I've fixed one of the two issues already [1] so bootdir doesn't need to
be set any more.

The only thing that still needs to be figured out is the root= parameter
which right now requires the following variable to be set when booting a
Nitrogen6X with WiFi module from first SD slot:
=> setenv root /dev/mmcblk1p2

The reason is that mainline kernel doesn't allow to change the numbering
order of SDHC devices based on aliases. Sascha offered a patch which
never got accepted (but is in the NXP tree) [2].

So on a device where a WiFi module is present, the first sdcard device
will be named mmcblk1. But on a SabreLite (no WiFi), it will be mmcblk0
as the bootscript thinks it is.

I haven't found a good approach yet to fix it, ideas are welcomed ;)

Regards,
Gary

[1] https://github.com/boundarydevices/u-boot-imx6/commit/bc55c1e2
[2] https://patchwork.kernel.org/patch/4223911/