Ls1043AQDS: QSPI CPLD read

[carlos-m-ribeiro]

Good morning,

In our custom board with ls1043aqds QSPI u-boot we have one CPLD configured to

0x7fb00000 but we have successive reads (successive addresses) with the same values:

The expected behavior is (using u-boot in NAND flash):

What can be wrong?

Thank you

[ufedor]

It is needed to check RCW fields:

IFC_MODE - refer QorIQ LS1043A Reference Manual, 4.4.5.1 Reset configuration word (RCW) source

IFC_GRP_[n]_BASE fields and IFC_GRP_[m]_EXT - refer QorIQ LS1043A Reference Manual, 3.4.7 IFC, QuadSPI, FTM and GPIO2 signal multiplexing

[carlos-m-ribeiro]

We are booting the u-boot for LS1043 from QSPI flash, and read from CPLD in 0x7fb00000 seeing the problems mentioned. Which RCW values we should configure? Can you also take a look to H board file and defconfig to see if anything is wrong.

[ufedor]

You have to compare NAND boot RCW (operational) and QSPI boot RCW (faulty).

Also you need to dump IFC controller registers by U-Boot "md" command in case of NAND and QSPI boot and compare them.

[carlos-m-ribeiro]

Thank you, and which are the IFC controller registers/addresses?

Best regards

[ufedor]

Refer to the QorIQ LS1043A Reference Manual, 25.3 IFC memory map/register definition.