Dear Supporter
Our customize board is similar with the i.MX 6Q sabresd except the DDR, and we have completed the ddr test, about 70% of the boards will reboot after the Andriod 5 OS running for 24-48 hours, 15% will reboot after 48-72 hours, 5% will reboot after 2 hours.
CPU: MCIMX6Q5EYM10AD
Memory: 512MB+512MB
EMMC: 8GB
Kernel version: 3.10.53
Android OS Version : Android 5.0
The dump log as below:
[16:49:50.550][ 133.564597] galcore 130000.gpu: **** DPM device timeout ****
[16:49:50.565][ 133.570298] [<807f1b40>] (__schedule+0x350/0x724) from [<807f2104>] (io_schedule+0x68/0x94)
[16:49:50.565][ 133.578684] [<807f2104>] (io_schedule+0x68/0x94) from [<800a501c>] (sleep_on_page+0x8/0x10)
[16:49:50.581][ 133.587064] [<800a501c>] (sleep_on_page+0x8/0x10) from [<807f04c8>] (__wait_on_bit_lock+0x6c/0xb8)
[16:49:50.581][ 133.596045] [<807f04c8>] (__wait_on_bit_lock+0x6c/0xb8) from [<800a500c>] (__lock_page+0x94/0x9c)
[16:49:50.597][ 133.604933] [<800a500c>] (__lock_page+0x94/0x9c) from [<800dc21c>] (migrate_pages+0x4b4/0x4cc)
We have tried to reduce the IMX6 processor frequency and increase the CPU voltage, the board will running fine.
Would you give me some advice to analyse this issue? Thanks.
Hi John
one can check if i.MX Android™ KK4.4.3_2.0.1 patches are included
as described in attached document and that gpu has sufficient memory with below hints:
Memory Management on i.MX6 Android
Test without gpu usage (with minimal image) to see if this is caused by power supplies ripples,
check power requirements given in Table 2-6. Power and decouple recommendations
i.MX6 System Development User’s Guide
https://www.nxp.com/docs/en/user-guide/IMX6DQ6SDLHDG.pdf
Best regards
igor
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Thanks Igor, we'll test again after updated the new patchs.