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andreiw / RaspberryPiPkg

DEPRECATED - DO NOT USE | Go here instead ->
https://github.com/tianocore/edk2-platforms/tree/master/Platform/RaspberryPi/RPi3
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ArasanMmcHostDxe: high speed support #8

Closed andreiw closed 4 years ago

andreiw commented 6 years ago

Implement high speed support

andreiw commented 6 years ago

4-bit switching and high speed (sorta 50Mhz) has been implemented in Arasan, with no impact on apparent performance (simple "time, copy EFI_RPI.Fd foo, time), but the driver is PIO today. I'm investigating SDMA support.

andreiw commented 5 years ago

Work done on enabling SdHostDxe (in MmcDxe) should help with some of the stability problems seen. Hopefully this will be reimplemented and closed soon.