On Fri, Feb 03, 2017 at 02:47:26PM -0500, Sebastien Bourdelin wrote: > Add binding documentation for the Technologic Systems NBUS that is used > to interface with peripherals in the FPGA of the TS-4600 SoM. > > --- > Changes v1 -> v2: > - rebase on master > - remove the simple-bus compatibility as the root node will now > populate child nodes (suggested by Rob Herring) > - use the ts vendor prefix for gpios (suggested by Rob Herring) > > Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@xxxxxxxxxxxxxxxxxxxx> > --- > Documentation/devicetree/bindings/bus/ts-nbus.txt | 50 +++++++++++++++++++++++ > 1 file changed, 50 insertions(+) > create mode 100644 Documentation/devicetree/bindings/bus/ts-nbus.txt > > diff --git a/Documentation/devicetree/bindings/bus/ts-nbus.txt b/Documentation/devicetree/bindings/bus/ts-nbus.txt > new file mode 100644 > index 000000000000..c8a1f2cbe6a0 > --- /dev/null > +++ b/Documentation/devicetree/bindings/bus/ts-nbus.txt > @@ -0,0 +1,50 @@ > +Technologic Systems NBUS > + > +The NBUS is a bus used to interface with peripherals in the Technologic > +Systems FPGA on the TS-4600 SoM. > + > +Required properties : > + - compatible : "technologic,ts-nbus" > + - #address-cells : must be 1 > + - #size-cells : must be 0 > + - pws : The PWM binded to the FPGA Should be pwms? s/binded/bound/ > + - data-gpios : The GPIO pin connected to the data line on the FPGA lines? How many? Always 8 like the example? > + - csn-gpios : The GPIO pin connected to the csn line on the FPGA > + - txrx-gpios : The GPIO pin connected to the txrx line on the FPGA > + - strobe-gpios : The GPIO pin connected to the stobe line on the FPGA > + - ale-gpios : The GPIO pin connected to the ale line on the FPGA > + - rdy-gpios : The GPIO pin connected to the rdy line on the FPGA > + > +Child nodes: > + > +The NBUS node can contain zero or more child nodes representing peripherals > +on the bus. > + > +Example: > + > + nbus { > + compatible = "technologic,ts-nbus"; > + pinctrl-0 = <&nbus_pins>; > + #address-cells = <1>; > + #size-cells = <0>; > + pwms = <&pwm 2 83>; > + ts-data-gpios = <&gpio0 0 GPIO_ACTIVE_HIGH > + &gpio0 1 GPIO_ACTIVE_HIGH > + &gpio0 2 GPIO_ACTIVE_HIGH > + &gpio0 3 GPIO_ACTIVE_HIGH > + &gpio0 4 GPIO_ACTIVE_HIGH > + &gpio0 5 GPIO_ACTIVE_HIGH > + &gpio0 6 GPIO_ACTIVE_HIGH > + &gpio0 7 GPIO_ACTIVE_HIGH>; > + ts-csn-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>; > + ts-txrx-gpios = <&gpio0 24 GPIO_ACTIVE_HIGH>; > + ts-strobe-gpios = <&gpio0 25 GPIO_ACTIVE_HIGH>; > + ts-ale-gpios = <&gpio0 26 GPIO_ACTIVE_HIGH>; > + ts-rdy-gpios = <&gpio0 21 GPIO_ACTIVE_HIGH>; > + > + watchdog@2a { > + compatible = "..."; > + > + /* ... */ > + }; > + }; > -- > 2.11.0 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html