topic Re: IMX28 custom board - command line issue? in i.MX Processors

IMX28 custom board - command line issue?

pt — Fri, 19 Dec 2014 06:29:42 GMT

Processor : IMX281

Linux Kernel version:2.6.35

Linux BSP:L2.6.35_1.1.0_130130_source

VDD 5V Only

I have successfully booted from sd card.

But I am facing some issues.

1. When I turn off and on power, the command line changes.

i.e., sometimes command line is

console=ttyAM0,115200 root=/dev/ram0 rdinit=/sbin/init fec_mac=00:08:02:6B:A3:1A gpmi (command line 4)

console=ttyAM0,115200 ubi.mtd=1 root=ubi0:rootfs0 rootfstype=ubifs rw gpmi (command line 2)

noinitrd console=ttyAM0,115200 root=/dev/mmcblk0p3 rootwait rw ip=none ssp1(command line 1)

Actually I have built the image to boot from mmc.

*My custom board doesn't have keys to select different command line options.

2. When I reboot the system, it shows the error code 0x8020a014 2times.

0x8020a014 (#define ERROR_DDI_SD_MMC_DEVICE_NOT_SUPPORTED (ERROR_DDI_GROUP | ERROR_DDI_SD_DRIVER_GROUP | 0x14))

Then It restarts.

root@freescale ~$ reboot

root@freescale ~$ Stopping inetd:

Unmounting filesystems

Restarting system.

0x8020a014

0x80502008

HTLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLFLC

PowerPrep start initialize power...

3. reboots on poweroff command ?

what is the reason behind these issues?

Regards

Re: IMX28 custom board - command line issue?

Yuri — Fri, 19 Dec 2014 07:08:28 GMT

Please check if i.MX28 LRADC1 pin is pulled up.

Please take a look at the next thread :

"Custom HW based on imx28 unable to boot "

https://community.freescale.com/thread/334012#

Have a great day,
Yuri

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Re: IMX28 custom board - command line issue?

pt — Fri, 19 Dec 2014 09:25:57 GMT

LRADC1 pin is not pulled up.

when boot from command lines other than mmc, the mmc init is failing

mxs-mmc: MXS SSP Controller MMC Interface driver

mxs-mmc mxs-mmc.0: MMC HW configuration failed

mxs-mmc: probe of mxs-mmc.0 failed with error -16

Regards