Re: [PATCH 09/11] mmc: core: Read the SD function extension registers for power management

[Linus Walleij]

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