Quote:
Originally Posted by wlaf
And at last...We're Back!! :-)
Reading was so fast, but writing the image was slow and made me worry:
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The eMMC device does not do "Write" (its micro-controller fakes it).
The underlying device is EEEProm (a lot of them, one per erase block).
For a "Write" of less than an erase block size;
The controller is doing:
"read, merge, erase, re-program".
If you had written to the device in erase block size chunks (bs=4096) then it would only have done:
"erase, re-program".
Rather than the longer merge cycle eight times for each erase block (default writes of bs=512).
Just as a note in case you ever have to do it again.
