MMDC1_MDOR.tXPR should be set as specified for the JEDEC DDR3 timing tXPR.
For all DDR3 speed bins: tXPR(min) = max(5 nCK, tRFC(min) + 10 ns) tRFC(2 Gb) = 160 ns
All the users of mx6q_4x_mt41j128.cfg have a 2-Gb density (Micron MT41J128M16HA-15E or SK hynix H5TQ2G63BFR-H9C for i.MX6Q SABRE Lite, and Micron MT41K128M16JT-125:K for i.MX6 SABRE SD).
Hence, MMDC1_MDOR.tXPR should be set to max(5 nCK, 170 ns), which is 170 ns and 91 nCK at 532 MHz, encoded as 0x5A in the bit-field MMDC1_MDOR[23:16].
Signed-off-by: Benoît Thébaudeau benoit.thebaudeau@advansee.com --- board/freescale/imx/ddr/mx6q_4x_mt41j128.cfg | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/board/freescale/imx/ddr/mx6q_4x_mt41j128.cfg b/board/freescale/imx/ddr/mx6q_4x_mt41j128.cfg index 9ac8027..1c24da8 100644 --- a/board/freescale/imx/ddr/mx6q_4x_mt41j128.cfg +++ b/board/freescale/imx/ddr/mx6q_4x_mt41j128.cfg @@ -114,7 +114,7 @@ DATA 4 0x021b0010 0xFF538F64 DATA 4 0x021b0014 0x01FF00DB DATA 4 0x021b002c 0x000026D2
-DATA 4 0x021b0030 0x005B0E21 +DATA 4 0x021b0030 0x005A0E21 DATA 4 0x021b0008 0x09444040 DATA 4 0x021b0004 0x00025576 DATA 4 0x021b0040 0x00000027