On Tue, 20 Nov 2018 14:17:12 +0000 Chris Coffey <cmc@xxxxxxxxxxxxx> wrote: > This patch adds device tree documentation for the Microchip > MCP41xxx/42xxx family of digital potentiometers. > > Signed-off-by: Chris Coffey <cmc@xxxxxxxxxxxxx> > --- > .../bindings/iio/potentiometer/mcp41010.txt | 29 ++++++++++++++++++++++ > 1 file changed, 29 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/potentiometer/mcp41010.txt > > diff --git a/Documentation/devicetree/bindings/iio/potentiometer/mcp41010.txt b/Documentation/devicetree/bindings/iio/potentiometer/mcp41010.txt > new file mode 100644 > index 0000000000..7dcf2071b7 > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/potentiometer/mcp41010.txt > @@ -0,0 +1,29 @@ > +* Microchip MCP41010/41050/41100/42010/42050/42100 Digital Potentiometer > + driver I'll channel my inner Rob ;) Bindings are for devices, not drivers (basically don't mention driver anywhere) It's trivial (and common) so I just tidied it up whilst applying. Applied to the togreg branch of iio.git and pushed out as testing for the autobuilders to play with it. Thanks, Jonathan > + > +Datasheet publicly available at: > +http://ww1.microchip.com/downloads/en/devicedoc/11195c.pdf > + > +The node for this driver must be a child node of a SPI controller, hence > +all mandatory properties described in > + > + Documentation/devicetree/bindings/spi/spi-bus.txt > + > +must be specified. > + > +Required properties: > + - compatible: Must be one of the following, depending on the > + model: > + "microchip,mcp41010" > + "microchip,mcp41050" > + "microchip,mcp41100" > + "microchip,mcp42010" > + "microchip,mcp42050" > + "microchip,mcp42100" > + > +Example: > +potentiometer@0 { > + compatible = "microchip,mcp41010"; > + reg = <0>; > + spi-max-frequency = <500000>; > +};
