> On Mon, 10 May 2021 at 09:40, Avri Altman <Avri.Altman@xxxxxxx> wrote: > > > > > 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". > > Thanks for the pointer! > > I did have a very brief look at this. The conclusion I made is that > this is way over designed to enable support for features like cache > and poweroff notification. However, there may be other use cases that > could benefit from a user space library, along the lines of the SD > Extensions API, but I can't really tell. > > Do you have an interest around this that you can share? Not at the moment. Still thinking about this. Thanks, Avri > > Thanks for reviewing! > > Kind regards > Uffe
