Commit Graph

4 Commits

Author SHA1 Message Date
Ivan Grokhotkov
6383fd550a
fix(sdmmc): extend the maximum number of retries of ACMD41
According to the application note in SD Card Physical Specification:

> The host shall set ACMD41 timeout more than 1 second to abort repeat
of issuing ACMD41 when the card does not indicate ready. The timeout
count starts from the first ACMD41 which is set voltage window
in the argument.

Previously, the timeout was exactly one second, and this caused
certain larger-capacity cards to "time out", because they couldn't
finish initialization process in time.
2024-03-01 10:50:29 +01:00
michael
232d98608a sdmmc: add communication check for eMMC after frequency switch 2019-12-12 08:11:17 +00:00
michael
8a364b4bdf sdmmc: support SDIO over SPI 2019-04-12 02:24:28 +08:00
Ivan Grokhotkov
de42d99b1d sdmmc: command layer refactoring 2018-08-30 13:11:54 +08:00