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How to increase eMMC throutput ?

Question asked by Apollo Chang on Sep 28, 2017
Latest reply on Sep 29, 2017 by Joan Xie

Customer request increase eMMC throutput performance base on Linux dd command base on i.MX6DL / MX6Q CPU.


We already make sure eMMC already run 8 bit , 52MHz DDR mode.


We test performance base on " dd if=/dev/mmcblk3 of=/dev/null bs=1M" to get performance is about 42MBytes. (4.1.15_1.2.0 BSP version)


root@imx6qsabresd:~# dd if=/dev/mmcblk3 of=/dev/null bs=1M
7576+0 records in
7576+0 records out
7944011776 bytes (7.9 GB, 7.4 GiB) copied, 188.931 s, 42.0 MB/s



Customer request up to 400Mbit/s base on Linux "dd if=/dev/mmcblk3 of=/dev/null bs=1M" command.

Does any patch code or other way can meet customer request ?