[PATCH 04/41] mmc: host: omap_hsmmc: Add voltage switch support for UHS SD card

2017-05-19 Thread Kishon Vijay Abraham I
From: Balaji T K UHS SD card i/o data line operates at 1.8V when in UHS speed mode. Add support for signal voltage switch to support 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

[PATCH 04/41] mmc: host: omap_hsmmc: Add voltage switch support for UHS SD card

2017-05-19 Thread Kishon Vijay Abraham I
From: Balaji T K UHS SD card i/o data line operates at 1.8V when in UHS speed mode. Add support for signal voltage switch to support 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