[PATCH 04/16] mmc: host: omap_hsmmc: Add voltage switch support for UHS SD card

2017-06-16 Thread Kishon Vijay Abraham I
UHS SD card IO data line operates at 1.8V when in UHS speed mode. Add voltage switch support in order to enumerate UHS cards. Also, enable CIRQ before checking for CLEV/DLEV. MMC module can sense when the clock lines and data lines are driven high by the card, if MMC is active and CIRQ can be

[PATCH 04/16] mmc: host: omap_hsmmc: Add voltage switch support for UHS SD card

2017-06-16 Thread Kishon Vijay Abraham I
UHS SD card IO data line operates at 1.8V when in UHS speed mode. Add voltage switch support in order to enumerate UHS cards. Also, enable CIRQ before checking for CLEV/DLEV. MMC module can sense when the clock lines and data lines are driven high by the card, if MMC is active and CIRQ can be