On Fri 2017-09-08 16:18:15, Sakari Ailus wrote: > Document referring to LEDs from remote device nodes, such as from camera > sensors. > > Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx> > diff --git a/Documentation/acpi/dsd/leds.txt b/Documentation/acpi/dsd/leds.txt > new file mode 100644 > index 000000000000..6217fcda15c9 > --- /dev/null > +++ b/Documentation/acpi/dsd/leds.txt > @@ -0,0 +1,92 @@ > +Describing and referring to LEDs in ACPI > + > +Individual LEDs are described by hierarchical data extension [6] nodes > +under the device node, the LED driver chip. The "led" property in the > +LED specific nodes tells the numerical ID of each individual LED. The > +"led" property is used here in a similar fashion as the "reg" property > +in DT. [3] > + > +Referring to LEDs in Devicetree is documented in [4], in "flash-leds" > +property documentation. In short, LEDs are directly referred to by > +using phandles. > + > +While Devicetree allows referring to any node in the tree[1], in Documentation/devicetree/usage-model.txt talks about "device tree" or "Device Tree" . Single word looks strange to me... -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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