752ae80514ccb3532a6d6d16a122642573eabdee
Add the interface to change the bus width and speed. By default, MMC is initialized with 1-bit mode and less than 400KHz bus clock. It causes MMC working inefficiently. Set I/O bus width on both MMC controller and EXTCSD. Otherwise, it may cause unmatched failure case. And support more timing mode, high speed, HS200 & HS400 mode. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> Tested-by: Ryan Harkin <ryan.harkin@linaro.org> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
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