I think this patch should be first so you add the bindings before the driver.
On 31/03/2017 at 17:22:50 +0200, Ludovic Desroches wrote: > Add description of the Atmel PTC subsystem bindings. > > Signed-off-by: Ludovic Desroches <[email protected]> > --- > .../devicetree/bindings/input/atmel,ptc.txt | 67 > ++++++++++++++++++++++ > 1 file changed, 67 insertions(+) > create mode 100644 Documentation/devicetree/bindings/input/atmel,ptc.txt > > diff --git a/Documentation/devicetree/bindings/input/atmel,ptc.txt > b/Documentation/devicetree/bindings/input/atmel,ptc.txt > new file mode 100644 > index 0000000..a183fd5 > --- /dev/null > +++ b/Documentation/devicetree/bindings/input/atmel,ptc.txt > @@ -0,0 +1,67 @@ > +Atmel PTC Subsystem > + > +The Atmel Peripheral Touch Controller subsystem offers built-in hardware > +for capacitive touch measurement on sensors that function as buttons, sliders > +and wheels. > + > +1) PTC Subsystem node > + > +Required properties: > +- compatible: Must be "atmel,sama5d2-ptc" > +- reg: Address, length of the shared memory and ppp > registers location > + and length. > +- clocks: Phandlers to the clocks. > +- clock-names: Must be "ptc_clk", "ptc_int_osc", "slow_clk". > +- #address-cells: Must be one. The cell is the button or scroller id. > +- #size-cells: Must be zero. > + > +Example: > + ptc@fc060000 { > + compatible = "atmel,sama5d2-ptc"; > + reg = <0x00800000 0x10000 > + 0xfc060000 0xcf>; > + interrupts = <58 IRQ_TYPE_LEVEL_HIGH 7>; > + clocks = <&ptc_clk>, <&main>, <&clk32k>; > + clock-names = "ptc_clk", "ptc_int_osc", "slow_clk"; > + #address-cells = <1>; > + #size-cells = <0>; > + > + [ child node definitions... ] > + }; > + > +2) Scroller / buttons subnodes > + > +Subnodes describe the kind of sensors the customer want to use. They have to > be > +named according to their function: button, slider or wheel. > + > +2.1) Scroller subnodes > + > +Required properties: > +- reg: Id of the scroller, each id must be different. > + > +Example: > + slider@0 { > + reg = <0>; > + }; > + > + wheel@1 { > + reg = <1>; > + }; > + > +2.2) Button subnodes > + > +Required properties: > +- reg: Id of node used for the button, each id must be > + different. > +- linux,keycode: Key code of the button. > + > +Example: > + button@8 { > + reg = <8>; > + linux,keycode = <2>; > + }; > + > + button@9 { > + reg = <9>; > + linux,keycode = <3>; > + }; > -- > 2.9.0 > -- Alexandre Belloni, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
