I have a iMX6DL custom board, use two MICRON_MT41K128M16JT-125:K. DDR memory chip, 32bit, schematics is below, for this connect, how to config ddr registers? for U8 L2 Pin, need use DRAM_CS0# or DRAM_CS1#?
For the information on how to configure the DDR controller registers in a custom memory configuration case, please use the following Register Programming Aid sheet:
For both memory chips, the DRAM_CS0# chip select signal should be used.
For this case, becase U8 use CKE1/ODT1/CLK1+/CLK1-, so I think, U8 will use cs1#
If U8 use cs0#, how to config the CKE1?
When use cs0#, I check CKE1 not signal.
use Register Programming Aid sheet, DDR stress tool can't run.
You have to use CS0, CKE0 and ODT0 signals for both DDR chips. Otherwise, the memory will not work.
Now U7 and U8 havs place on the board, if I use U7 only, can it work?
I have run ddr stress test use U7 only, but when I build u-boot.imx, uart1 not message output.
What is I need to do?
You have to change the MMDC configuration in the u-boot header DCD table to operate in 16-bit wide bus mode. For details, please refer to the Section 3.2 of the attached document.
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