1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
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 = "...";
/* ... */
};
};
|
