On Mon, Jul 22, 2019 at 09:53:01PM +0200, Evgeny Kolesnikov wrote: > This adds device tree bindings of the poweroff driver > for power managing micro controller units that are connected > to a board via the UART interface. > > Signed-off-by: Evgeny Kolesnikov <evgenyz@xxxxxxxxx> > --- > .../bindings/power/reset/uart-poweroff.txt | 38 +++++++++++++++++++ > 1 file changed, 38 insertions(+) > create mode 100644 Documentation/devicetree/bindings/power/reset/uart-poweroff.txt > > diff --git a/Documentation/devicetree/bindings/power/reset/uart-poweroff.txt b/Documentation/devicetree/bindings/power/reset/uart-poweroff.txt > new file mode 100644 > index 000000000000..86d036271b51 > --- /dev/null > +++ b/Documentation/devicetree/bindings/power/reset/uart-poweroff.txt > @@ -0,0 +1,38 @@ > +* UART-based PM MCU power off driver > + > +Some devices have a microcontroller controlling the main power > +supply. This microcontroller is connected to UART of the SoC. > +Sending a sequence of characters tells the MCU to turn > +the power off. IMO, you should have a node representing the specific microcontroller. Generic binding attempts like this generally don't work well because you need a never ending addition of properties to deal with h/w (and f/w in this case) differences. The properties you already have are evidence of this. Now, if you want a common driver, then that is a separate issue. You can have multiple, specific bindings map to a common driver (or not, it's up to the OS). Rob
