Ivan Grokhotkov 6baf8195ee sdmmc: add support for high speed (HS) mode ...

By default SD cards are initialized in default speed (DS) mode. Enabling
HS mode requires SWITCH_FUNC command to be sent twice: first time to
query if the card supports switching to HS mode, second time to perform
the switch.

This change implements SWITCH_FUNC command and adds the procedure to
switch to HS mode.

2017-08-16 18:59:04 +08:00

..

driver

sdmmc: add support for high speed (HS) mode

2017-08-16 18:59:04 +08:00