> That also happens to be one of the cards we deploy; However i did > wonder about adding a quirk but decided against it as it was not clear > to me from the specification that CACHE ON really is meant to complete > within GENERIC_CMD6_TIMEOUT. That and i fret about ending up in hit-a- > mole games as the failure is really quite tedious (boot failure). I agree that we should use the more defensive variant as a default. I mean there should be no performance regression since most cards will respond just faster, or? The only downside I could see is that we might miss a real timeout with no bounds set and might get stuck? Maybe it is worth contacting eMMC spec people to at least know what is the expected behaviour?
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