3 commits

Author	SHA1	Message	Date
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
michael	5b37a96ddc	feature(sdio): allow to enable internal pullups of the SDIO host and slave as a debug feature ... NOTE: the internal pullups are not totally reliable, please do add external pullups on your bus.	2018-06-14 12:04:22 +08:00
Ivan Grokhotkov	edd924f273	sdmmc: add peripheral driver and protocol layer	2017-01-09 04:51:24 +08:00