| Message ID | 20181111193114.24307-1-alexandre.belloni@bootlin.com |
|---|---|
| State | Accepted |
| Headers | show |
| Series | [1/2] dt-bindings: rtc: add generic bindings | expand |
Hi Alexandre, On Sun, Nov 11, 2018 at 8:31 PM Alexandre Belloni <alexandre.belloni@bootlin.com> wrote: > Add generic binding documentation for the RTC subsystem. > > Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Thanks for your patch! > new file mode 100644 > index 000000000000..221b7da50aca > --- /dev/null > +++ b/Documentation/devicetree/bindings/rtc/rtc.txt > @@ -0,0 +1,30 @@ > +The following properties may not be supported by all drivers. However, if a > +driver wants to support one of the below features, it should adapt the bindings > +below. > +- trickle-resistor-ohms : Selected resistor for trickle charger. Should be given Can this resistor be less than 1 ohm? trickle-resistor-milli-ohms? > + if trickle charger should be enabled > +- trickle-diode-disable : Do not use internal trickle charger diode Should be > + given if internal trickle charger diode should be > + disabled > +- wakeup-source : Enables wake up of host system on alarm Gr{oetje,eeting}s, Geert
On 06/12/2018 11:36:59+0100, Geert Uytterhoeven wrote: > > +The following properties may not be supported by all drivers. However, if a > > +driver wants to support one of the below features, it should adapt the bindings > > +below. > > +- trickle-resistor-ohms : Selected resistor for trickle charger. Should be given > > Can this resistor be less than 1 ohm? > trickle-resistor-milli-ohms? > Well, this is what current drivers already use so we are stuck with that for now. The value should be a few kOhm anyway. I think the lowest I know about is 250 Ohm. > > + if trickle charger should be enabled > > +- trickle-diode-disable : Do not use internal trickle charger diode Should be > > + given if internal trickle charger diode should be > > + disabled > > +- wakeup-source : Enables wake up of host system on alarm > > Gr{oetje,eeting}s, > > Geert > > -- > Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org > > In personal conversations with technical people, I call myself a hacker. But > when I'm talking to journalists I just say "programmer" or something like that. > -- Linus Torvalds
Hi Alexandre, On Fri, Dec 7, 2018 at 10:34 AM Alexandre Belloni <alexandre.belloni@bootlin.com> wrote: > On 06/12/2018 11:36:59+0100, Geert Uytterhoeven wrote: > > > +The following properties may not be supported by all drivers. However, if a > > > +driver wants to support one of the below features, it should adapt the bindings > > > +below. > > > +- trickle-resistor-ohms : Selected resistor for trickle charger. Should be given > > > > Can this resistor be less than 1 ohm? > > trickle-resistor-milli-ohms? > > Well, this is what current drivers already use so we are stuck with that > for now. > > The value should be a few kOhm anyway. I think the lowest I know about > is 250 Ohm. OK, good to know. Thanks! Gr{oetje,eeting}s, Geert
diff --git a/Documentation/devicetree/bindings/rtc/rtc.txt b/Documentation/devicetree/bindings/rtc/rtc.txt new file mode 100644 index 000000000000..221b7da50aca --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/rtc.txt @@ -0,0 +1,30 @@ +Generic device tree bindings for Real Time Clock devices +======================================================== + +This document describes generic bindings which can be used to describe Real Time +Clock devices in a device tree. + +Required properties +------------------- + +- compatible : name of RTC device following generic names recommended practice. + +For other required properties e.g. to describe register sets, +clocks, etc. check the binding documentation of the specific driver. + +Optional properties +------------------- + +- start-year : if provided, the default hardware range supported by the RTC is + shifted so the first usable year is the specified one. + +The following properties may not be supported by all drivers. However, if a +driver wants to support one of the below features, it should adapt the bindings +below. +- trickle-resistor-ohms : Selected resistor for trickle charger. Should be given + if trickle charger should be enabled +- trickle-diode-disable : Do not use internal trickle charger diode Should be + given if internal trickle charger diode should be + disabled +- wakeup-source : Enables wake up of host system on alarm +
Add generic binding documentation for the RTC subsystem. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> --- Documentation/devicetree/bindings/rtc/rtc.txt | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 Documentation/devicetree/bindings/rtc/rtc.txt