On 23/05/17 11:05, Linus Walleij wrote:
Pierre, what host were you developing this for? Maybe I can try to get the same and test it.
I think the work primarily was done with the Texas Instruments SDHCI host that HP used in their laptops. Ricoh controllers were also popular, but they had some proprietary mode that you had to get them out of.
If I recall correctly, all early SDHCI controllers needed this feature. I think scatter/gather was a later addition to the spec.
I take it updates to the SD specification hasn't fixed this performance issue?
Regards -- Pierre Ossman
