beagle bone black: problem of boot from eMMC

[Sascha Hauer]

On Mon, Jan 05, 2015 at 10:41:52AM +0100, Teresa Gámez wrote:
> Hello Manuel,
> 
> Am Mittwoch, den 31.12.2014, 14:52 +0000 schrieb ManuelCurcio at Eaton.com:
> > 
> > After, I wanted to boot from the the internal eMMC. 
> > So after boot from sd card, I mounted the eMMC (mount /dev/mmc1.0) and
> > copied the MLO and barebox.bin in the /mnt/mmc1.0 folder.
> > 
> > When I try to boot from the internal eMMC ,I have the following error: 
> > --------->
> > barebox 2014.12.0 #2 Wed Dec 31 15:29:16 GMT 2014
> > 
> > 
> > Board: TI AM335x BeagleBone
> > detected 'BeagleBone Black'
> > omap-hsmmc 48060000.mmc: registered as 48060000.mmc
> > booting from MMC
> > fat fat0: probe failed: error 22
> > Unable to mount  (-22)
> > booting failed
> > <---------
> 
> This issue comes from commit:
> 
> commit 0d6392de4ad824a6553c0e3e3e18edef689a7c85
> Author: Sascha Hauer <s.hauer at pengutronix.de>
> Date:   Thu Jun 5 12:09:07 2014 +0200
> 
>     ARM: AM335x: Beaglebone: Use stripped down devicetree for MLO
> 
> For the MLO only the am335x-bone-common.dtsi is used to create the
> device tree. But this does not have the emmc support included.

Damn. Somehow I knew I was guilty :(

> 
> > 
> > I tried myself to find a 'correction' by added the call of
> > am33xx_of_register_bootdevice(void) function at the end of the static
> > int beaglebone_devices_init(void) function. With this modification,
> > sometime (depending of the last boot: from SD Card or from eMMC)  I can
> > boot, someting not. 
> 
> What you are also missing is a disabled emmc node from the
> am335x-boneblack.dts in the am335x-bone-common.dtsi.

I just sent a patch which fixes this.

Sascha

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