1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/pps/pps-gpi 4 $id: http://devicetree.org/schemas/pps/pps-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: PPS Signal via GPIO 7 title: PPS Signal via GPIO
8 8
9 maintainers: 9 maintainers:
10 - Fabio Estevam <festevam@gmail.com> 10 - Fabio Estevam <festevam@gmail.com>
11 11
12 properties: 12 properties:
13 compatible: 13 compatible:
14 const: pps-gpio 14 const: pps-gpio
15 15
16 gpios: 16 gpios:
17 description: The GPIO that provides the PP 17 description: The GPIO that provides the PPS signal.
18 maxItems: 1 18 maxItems: 1
19 19
20 echo-gpios: 20 echo-gpios:
21 description: The GPIO that provides the PP 21 description: The GPIO that provides the PPS ECHO signal.
22 maxItems: 1 22 maxItems: 1
23 23
24 echo-active-ms: 24 echo-active-ms:
25 description: Duration in ms of the active 25 description: Duration in ms of the active portion of the echo pulse.
26 26
27 assert-falling-edge: 27 assert-falling-edge:
28 description: Indicates a falling edge asse 28 description: Indicates a falling edge assert, when present. Rising edge if absent.
29 type: boolean 29 type: boolean
30 30
31 required: 31 required:
32 - compatible 32 - compatible
33 - gpios 33 - gpios
34 34
35 additionalProperties: false 35 additionalProperties: false
36 36
37 examples: 37 examples:
38 - | 38 - |
39 #include <dt-bindings/gpio/gpio.h> 39 #include <dt-bindings/gpio/gpio.h>
40 40
41 pps { 41 pps {
42 compatible = "pps-gpio"; 42 compatible = "pps-gpio";
43 pinctrl-names = "default"; 43 pinctrl-names = "default";
44 pinctrl-0 = <&pinctrl_pps>; 44 pinctrl-0 = <&pinctrl_pps>;
45 gpios = <&gpio1 26 GPIO_ACTIVE_HIGH> 45 gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>;
46 assert-falling-edge; 46 assert-falling-edge;
47 echo-gpios = <&gpio1 27 GPIO_ACTIVE_ 47 echo-gpios = <&gpio1 27 GPIO_ACTIVE_HIGH>;
48 echo-active-ms = <100>; 48 echo-active-ms = <100>;
49 }; 49 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.