Q: IMX6Q support 32bit of DDR3 do? If supported, DRAM_CS0 and DRAM_CS1 to how to wire it?
A: yes, please check sect.3.3 DDR connection information
i.MX6 System Development User’s Guide
http://cache.freescale.com/files/32bit/doc/user_guide/IMX6DQ6SDLHDG.pdf
For 64bit bus connect DRAM_CS0 and DRAM_CS1 together
Best regards
igor
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Hi,igor
In mx6q sabresd borad, there are 4 ddr3. In my imx6q borad, I want to use 2 DDR3(32bit bus). Would it be ok?
For 32bit bus, should I connect the 2 ddr3 to DRAM_CS0 or connect the 2 ddr3 to DRAM_CS0 and DRAM_CS1?
How to change u-boot to make it work?
2 DDR3(32bit bus) would it be ok, for 32bit bus connect the 2 ddr3 to DRAM_CS0 and DRAM_CS1
~igor
I saw this article: Calibration of i.mx6 32bit bus DDR3 with 2 CS
At the end:We do not have such tool if memories populated on CSD1 are NOT “mirrored” with the memories populated on CSD0. What does "mirrored" means?
“mirrored” means the identical topology and trace length for CSD1 memory side.
If the DDR memory devices are populated on CSD0, Would it be ok? It seems very strict while the 2 DDR memory devices are populated on CSD0 and CSD2.