MX7D DDR3L stress test is not displaying on the screen properly.

[masayukikai]

MX7D DDR3L stress test is not displaying on the screen properly.

We have tried DDR Stress Test by using Option 3 U-Boot.
But DDR Stress Test does not work properly like this.
=> go 0x00910000
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Our system works properly on Uboot or Linux, however only DDR Stress Test does not work properly.
Our system does not also have eMMC, Our system has only SD card.

What should we check about this issue?

[igorpadykov]

Hi Masayuki

if it is not working in uboot, recommended to connect jtag (or use

"jtag option"), pay attention to FAQ on ddr test link:

>Q. When using the JTAG version of the DDR stress test, how can I select a different UART port for my serial port?

i.MX6/7 DDR Stress Test Tool V3.00 

"Feature list" describes how uart is initialized:

    Add auto-detect UART feature in V2.20 uboot/JTAG version.
DDR stress test tool read CCM_CCGR and UART-UCR registers to determine
which UART is enabled. If found, it re-init the UART controller and set the bandrate
to 115200. UART pin mux is NOT reconfigured. If there is no enabled UART found,
the tool initializes UART1 controller and pin mux as the defaut UART.

Best regards
igor
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[masayukikai]

Hi igor

Unfortunately we don't have JTAG tool now, so we would like to work the DDR stress test in uboot.

[igorpadykov]

Hi Masayuki

probably you can borrow one in local nxp marketing office.

Best regards
igor

[masayukikai]

Hi igor

We would like to prepare the DDR3L Stress test by ourselves  in our application software not to use JTAG tool.

if possible, Could we have source code of your Stress test?

[igorpadykov]

Hi Masayuki

sorry, source code of stress test is not available for customers.

Best regards
igor