[edk2-devel] [PATCH v3 2/2] MdeModulePkg/SdMmcHcDxe: Implement revision 3 of SdMmcOverrideProtocol

[Wu, Hao A]

> -----Original Message-----
> From: Albecki, Mateusz
> Sent: Tuesday, June 25, 2019 10:14 PM
> To: Wu, Hao A; devel at edk2.groups.io
> Subject: RE: [PATCH v3 2/2] MdeModulePkg/SdMmcHcDxe: Implement
> revision 3 of SdMmcOverrideProtocol
> 
...
> 
> You were clear in previous mails but as I responded I am not sure if you can
> be in default 1-bit mode when the SdCardSwitch function is executed. I am
> not sure if this command uses DAT lanes to transfer the data(I couldn't find
> information in spec) and I am unable to test it on real hardware. Could you
> test it on your end? If it works I see no reason not to combine those 2.
> 

I understand now.
Though combining the two SdCardSwitchBusWidth() calls does work for the
UHS-I card on my side, I still prefer your proposed logic with regard to
performance consideration.

Please help to keep this chunk of logic as is in the next series. Thanks
for the explanation.

Best Regards,
Hao Wu

-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.

View/Reply Online (#42846): https://edk2.groups.io/g/devel/message/42846
Mute This Topic: https://groups.io/mt/32159391/1813853
Group Owner: devel+owner at edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub  [edk2-devel-archive at redhat.com]
-=-=-=-=-=-=-=-=-=-=-=-