On Tue, May 4, 2021 at 6:12 PM Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote: > In SD spec v4.x the SD function extension registers were introduced. A > specific function register were added to let the card announce support for > optional features in regards to power management. The features that were > added are "Power Off Notification", "Power Down Mode" and "Power > Sustenance". > > As a first step, let's read and parse this register for power management > during the SD card initialization and store the information about the > supported features in the struct mmc_card. In this way, we prepare for > subsequent changes to implement the complete support for the new features. > > Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> Looks to me like it will work just fine. Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Yours, Linus Walleij
