4 commits

Author	SHA1	Message	Date
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	78fab8a0f9	sdmmc: implement partial DDR support ... Works for 3.3V eMMC in 4 line mode. Not implemented: - DDR mode for SD cards (UHS-I) also need voltage to be switched to 1.8V. - 8-line DDR mode for eMMC to be implemented later.	2018-08-30 13:11:54 +08:00
Ivan Grokhotkov	de42d99b1d	sdmmc: command layer refactoring	2018-08-30 13:11:54 +08:00