On 18/02/25 20:41, Erick Shepherd wrote: > Sorry about that, the context for this change is that I have been > working with a DDR50 swissbit SD card that does not support tuning. > The case I'm seeing is that the first tuning times out and any > further tuning attempts cause an async page read I/O error. I used > this change to prevent the card from attempting to tune again if it > is ever reset in the case where we know tuning isn't supported. Sorry for the slow reply. I would expect if there was a general problem with DDR50 SD cards, it would have come to light before now. Does the card work with any other host controllers with linux? If it is specific to a particular kind of card, a card quirk could be added, say MMC_QUIRK_BROKEN_DDR50_TUNING
