| Message ID | 20170714203218.14409-4-sebastien.bourdelin@savoirfairelinux.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, Jul 14, 2017 at 04:32:13PM -0400, 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. > > Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com> > --- > Changes v4 -> v5: > - fix missing signed off > > Changes v3 -> v4: > - rebase on master > - fix vendor prefixes for dts properties (suggested by Rob Herring) > - v3 was acked by Linus Walleij > > Changes v2 -> v3: > - rebase on master > - fix typo (suggested by Rob Herring) > > 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) > --- > Documentation/devicetree/bindings/bus/ts-nbus.txt | 50 +++++++++++++++++++++++ > 1 file changed, 50 insertions(+) > create mode 100644 Documentation/devicetree/bindings/bus/ts-nbus.txt Acked-by: Rob Herring <robh@kernel.org>
On Fri, Jul 14, 2017 at 10:32 PM, Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com> wrote: > Add binding documentation for the Technologic Systems NBUS that is used > to interface with peripherals in the FPGA of the TS-4600 SoM. > > Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com> > --- > Changes v4 -> v5: > - fix missing signed off Acked-by: Linus Walleij <linus.walleij@linaro.org> Yours, Linus Walleij
diff --git a/Documentation/devicetree/bindings/bus/ts-nbus.txt b/Documentation/devicetree/bindings/bus/ts-nbus.txt new file mode 100644 index 000000000000..2a10d065b9fa --- /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 + - pwms : The PWM bound to the FPGA + - ts,data-gpios : The 8 GPIO pins connected to the data lines on the FPGA + - ts,csn-gpios : The GPIO pin connected to the csn line on the FPGA + - ts,txrx-gpios : The GPIO pin connected to the txrx line on the FPGA + - ts,strobe-gpios : The GPIO pin connected to the stobe line on the FPGA + - ts,ale-gpios : The GPIO pin connected to the ale line on the FPGA + - ts,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 = "..."; + + /* ... */ + }; + };
Add binding documentation for the Technologic Systems NBUS that is used to interface with peripherals in the FPGA of the TS-4600 SoM. Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com> --- Changes v4 -> v5: - fix missing signed off Changes v3 -> v4: - rebase on master - fix vendor prefixes for dts properties (suggested by Rob Herring) - v3 was acked by Linus Walleij Changes v2 -> v3: - rebase on master - fix typo (suggested by Rob Herring) 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) --- Documentation/devicetree/bindings/bus/ts-nbus.txt | 50 +++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 Documentation/devicetree/bindings/bus/ts-nbus.txt