Re: imx6 emmc issue

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Hi Ed


2013/11/20 Ed Sutter <ed.sutter@xxxxxxxxxxxxxxxxxx>:
> Dong,
> Hello, I am currently working on an Freescale iMX6 SABRE Board platform
> http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=RDIMX6SABREBRD
>
> I'm trying to run with mainline kernel/uboot/buildroot just to be a bit more
> up-to-date than the LTIB distribution.  I am trying to setup a ROOTFS
> directly
> on the eMMC device.  Referring to this thread on the freescale forum:
>
> https://community.freescale.com/message/363870?et=watches.email.thread#363870
>
> I'm working with linux-3.12 and patch-v3.12-next-20131119 and I've applied
> these
> additional patches: http://comments.gmane.org/gmane.linux.kernel.mmc/23339
>
> I am able to access the emmc device from linux when using fdisk; however,
> when I attempt to run "mkfs.ext3 /dev/mmcblk0p1" the "Discarding device
> blocks"
> step takes over an hour (80 minutes last time I tried it).
>
> Fabio Estevam (from freescale) suggested I report this to you.
> Are you aware of this issue?  Are you aware of anyone that's actually tried
> to do mkfs.ext3 on emmc with a recent kernel version for this board/SOC?
>

I am using a custom board based on a imx6d with a sandisk emmc. A 3.12
kernel with some
light patches (
https://github.com/RobertCNelson/armv7-multiplatform/tree/v3.12.x ) is
used.

For me the emmc works... I only had to disable support for the boot
and rpmb partition types
as I get some looooong delays.

greets
--
Christian Gmeiner, MSc
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