Executing "reboot" command (adb reboot) from terminal prompt causes cpu hang in kernel.

Hi Vincie,

I've moved your post to the Automotive forum in order to ensure that the proper experts can respond. Please allow for some delay in response due to the holiday season here in the United States.

Hi Vincie,

Your question has been forwarded to experts. Expect delay in response due to holidays.
Best regards
Lucy

Hi Vincie

Is this TI-EVM or custom board ? What is the J6 silicon revision?

Regards

Ravi

Hello Ravi,

 It is TI-EVM board only and the

J6 Silicon revision is,

OMAP X5777ATXGABC

52ZDMZ9
8H2 ABC G1

Regards

Vincie Joe

Hi Vincie

Ok, its TI-EVM. What is revision of board. You can provide u-boot console log.

There was a warm reset issue on silicon revision 1.0/1.1, that's why reboot was not working. It should work latest Rev-H EVM SR2.0 revision.

Regards

Ravi

Hello Ravi,

Revision board is : G3

U-boot log at hang time as follows,

[ 11.620927] healthd: battery none chg=
[ 11.898329] lowmemorykiller: lowmem_shrink: convert oom_adj to oom_score_adj:
[ 11.905532] lowmemorykiller: oom_adj 0 => oom_score_adj 0
[ 11.911068] lowmemorykiller: oom_adj 1 => oom_score_adj 58
[ 11.916670] lowmemorykiller: oom_adj 2 => oom_score_adj 117
[ 11.922358] lowmemorykiller: oom_adj 3 => oom_score_adj 176
[ 11.928056] lowmemorykiller: oom_adj 9 => oom_score_adj 529
[ 11.933690] lowmemorykiller: oom_adj 15 => oom_score_adj 1000
[ 13.389053] acc_open
[ 13.391267] acc_release
[ 14.434529] mmcblk0: error -110 sending status command, retrying
[ 14.444983] mmcblk0: timed out sending r/w cmd command, card status 0x800b00
[ 14.452838] mmcblk0: status not valid, retrying timeout
[ 14.561649] mtp_open
[ 15.921662] binder: release 2225:2542 transaction 5434 in, still active
[ 15.928619] binder: send failed reply for transaction 5434 to 2576:2576
[ 16.796916] init: Boot Animation exit
[ 23.600585] SysRq : Emergency Remount R/O
[ 23.606292] EXT4-fs (mmcblk0p10): re-mounted. Opts: (null)
[ 23.620264] EXT4-fs (mmcblk0p13): re-mounted. Opts: (null)
[ 23.627289] Emergency Remount complete
[ 23.726685] reboot: Restarting system with command ''

U-Boot SPL 2014.07-00121-gfc792b4 (May 27 2015 - 21:06:00)
DRA752-GP ES1.1

u-boot Hangs at this position and device is not booting after this,

When i press hard cpu reset key then it proceed rebooting.

Regards

Vincie Joe

Hello Ravi,

 Any Inputs on the issue.

Regards

Vincie Joe

Hi Ravi,

You are talking about erratum i875 Power-on-Reset (PORz) Warm Boot Hang. Am I right?

If true, I'm wondering if Vincie can implement the workaround as described in erratum? I'm attaching it below.

Thanks,

Stan

A board level workaround requires adding a 220 Ohm (+/- 5%) resistor onto the SRAM
LDO supply (Cap_vddram_mpu1, ball K16 on the SoC package with ABC designator
(that is, the 23 mm package)). This resistor provides a controlled discharge path for the
charge contained within the external 1μF LDO capacitor during the reset operation. The
workaround effectiveness assumes that the active duration of the PORz signal is a
typical 3.4 ms or greater.
In systems with an MCU present, a second workaround technique can be utilized. The
MCU performs a handshake with the device following a warm PORz to ensure that the
device is responsive after the reset. On the occasion a hang occurs, the MCU should
assert PORz low for 200 ms. This eliminates the need for an external 220 Ohm resistor.

Hi Stan

You are right, i am referring PORz warm boot issue.

Regards
Ravi

Hi Stan,

   Sorry for delay in reply

Please share me the screen shot for board level work around to place 220 ohm  resistor onto the SRAM
LDO .

Regards

Vincie Joe

Hi Stan,
Thanks for sharing the circuit diagram,
but my board is "OMAP X5777ATXGABC", the schematic which you shared is different.
please share the schematic for the "OMAP X5777ATXGABC" layout, which help me to work on this.

Regards
Vincie Joe

Main goal is to have the 220ohm resistor between CAP_VDDRAM_MPU1 and GND.

Do you have the resistor on your board? If not, is it feasible to solder one?

Regards,

Stan

Hi Stan/Ravi,

Thank you for support ,

My management is planed to go for the latest Rev-H EVM SR2.0 revision.

But they need some information:

- If we procure the product, the platform will resolve the soft boot issue? 

- If we procure the latest Rev-H platform, your team will support us for any issue in the board and software level?

- We can purchase the product in India itself or from other country?

- Please share the quotation of  latest Rev-H EVM SR2.0 revision.

Thanks 

Vincie Joe

     

latest Rev-H EVM SR2.0 revision

Hi,

Ravi already answered on your first question about soft reset boot issue - it is solved for SR2.0.
For the other questions - please refer to the local TI representative as this will be the fastest way to get answers.

Best regards
Lucy

Hi Ravi,

What is the frequency of issue, always occurs first time "reboot" ?

        Issue is not occur in first reboot,When we do automation test for reboot continuously more than 10 times, then this issue is occurred.

Did check with other Rev-G boards as well ?

       Yes, we have 3 Rev: G Board, in all 3 boards I am able to reproduce this issue.

Regards

Vincie Joe

Vincie

Can you check with latest u-boot and kernel version.

Regards

Ravi

Hi Ravi,

 As per your advice, we ordered the platform with the  "latest Rev-H EVM SR2.0 revision", to overcome the issue.

Thanks and Regards

Vincie Joe

Hi Ravi,

I have bought the new Jacinto 6 board, In that box i didn't find any user manual or installation guide to boot the platform.

Please guide me how to get all source for particular jacinto 6 platform, I have shared the board details down,

"My Board Details:

Cpu Board: Vayu EVM xc5777x

S/N : VA1_1703016

REV : H

ASSY : 516580 "

When I tried with my old Jacinto 6 platform MLO and u-boot i am not able to enter into Fastboot mode.

If I copy all the partition manually to the SDcard i am not able to boot it.

It stuck in display failed error "ldc3001_read_reg: i2c transfer failed (-121)".

I want a proper MLO, U-boot.img and the kernel and android source packages or share me the link where i could get the source for my board.



Regards

Vincie Joe

Hi Vincie,

I will mark this thread as closed, the issue will be discussed here:
e2e.ti.com/.../590270

Regards,
Yordan

Hi Ravi,

 I have purchased New Jacinto6EVM board with Rev-H ES:2.0 version, Still I am facing the reboot issue.

When I have run the Reboot cmd script continuously more than 15 to 30 loop, the Board got stuck and not restarted. 

The board got stuck after u-boot and before kernel starts.

I have attached the screen shot were i got stuck.

Please provide me the proper solution to resolve it.

Regards

Vincie Joe

Hi, @Vincie Joe,

The last post is the same as the one in:

I will mark this thread as closed. The discussion can continue in the other thread.

Regards,

Mariya