LS1046A QSPI Boot failed

[tian_shuliang]

I design a board that refer to frwy-ls1046a-ac. cpu boot source and por config are the same with frwy-ls1046a-ac.

When i select qspi(SW1[3] and SW1[7] ON) to startup, I find board unable to startup. I test no data on QSPI DATA 0 and

QSPI_A_SCK as follow:

Then i did the following steps:

1.Select sdcard to startup

2.Enter to uboot commamd mode

3.Input "sf probe 0:0" to init qspi

4.Select qspi (SW1[3] and SW1[7] ON) to startup

5.Reset board. Then the board can startup from qspi.

I want to know why can't  startup by qspi when power on. If QSPI_A_SCK is wrong.

[tian_shuliang]

It is custom board. Select QSPI， FRWY can startup normally when power on。  

1.Select QSPI startup ,I test PORESET_B and QSPI CLK，PORESET_B can last about 600 microseconds.

  No data in qspi DATA0。

2.Select SDCard startup , not plugin sdcard. I test PORESET_B and SDCARD CLK，PORESET_B can last about 5 millisecond.

1.Why are the durations of PORESET_B‘s high levels so different?

2.Why LS1046A can't read data from qspi？

[ufedor]

Something is wrong with the processor connection.

Refer to the QorIQ LS1046A, LS1026A Data Sheet, notes in the Table 1. Pinout list by bus and AN5252 - QorIQ LS1046A Design Checklist.

Check POR levels of all signals explicitly mentioned in the aforementioned sources.

[ufedor]

> When i select qspi(SW1[3] and SW1[7] ON) to startup

Is this about custom board?

If "yes" - please provide the board connection schematics as searchable PDF.

Can you replicate the issue on the FRWY board?