| 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 = "..."; |
| |
| /* ... */ |
| }; |
| }; |
