RE: [PATCH 0/2] mmc: core: Implement support for cache ctrl for SD cards

From: Avri Altman
Date: Mon May 10 2021 - 03:40:04 EST

> In the SD spec v6.x the SD function extension registers for performance
> enhancements were introduced. As a part of this an optional internal cache
> on
> the SD card can be used to improve performance.
Just to verify that you are aware of that:
In addition to the extension Registers that were defined in the physical core spec,
there was a separate document that was released that suggest a common OS API's to those registers.
It is called "SD specification part A5, SD Extensions API specification".