xref: /freebsd/sys/contrib/device-tree/Bindings/gpio/xylon,logicvc-gpio.yaml (revision 924226fba12cc9a228c73b956e1b7fa24c60b055) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2# Copyright 2019 Bootlin
3%YAML 1.2
4---
5$id: "http://devicetree.org/schemas/gpio/xylon,logicvc-gpio.yaml#"
6$schema: "http://devicetree.org/meta-schemas/core.yaml#"
7
8title: Xylon LogiCVC GPIO controller
9
10maintainers:
11  - Paul Kocialkowski <paul.kocialkowski@bootlin.com>
12
13description: |
14  The LogiCVC GPIO describes the GPIO block included in the LogiCVC display
15  controller. These are meant to be used for controlling display-related
16  signals.
17
18  The controller exposes GPIOs from the display and power control registers,
19  which are mapped by the driver as follows:
20  - GPIO[4:0] (display control) mapped to index 0-4
21  - EN_BLIGHT (power control) mapped to index 5
22  - EN_VDD (power control) mapped to index 6
23  - EN_VEE (power control) mapped to index 7
24  - V_EN (power control) mapped to index 8
25
26properties:
27  $nodename:
28    pattern: "^gpio@[0-9a-f]+$"
29
30  compatible:
31    enum:
32      - xylon,logicvc-3.02.a-gpio
33
34  reg:
35    maxItems: 1
36
37  "#gpio-cells":
38    const: 2
39
40  gpio-controller: true
41
42  gpio-line-names:
43    minItems: 1
44    maxItems: 9
45
46required:
47  - compatible
48  - reg
49  - "#gpio-cells"
50  - gpio-controller
51
52additionalProperties: false
53
54examples:
55  - |
56    logicvc: logicvc@43c00000 {
57      compatible = "xylon,logicvc-3.02.a", "syscon", "simple-mfd";
58      reg = <0x43c00000 0x6000>;
59
60      #address-cells = <1>;
61      #size-cells = <1>;
62
63      logicvc_gpio: gpio@40 {
64        compatible = "xylon,logicvc-3.02.a-gpio";
65        reg = <0x40 0x40>;
66        gpio-controller;
67        #gpio-cells = <2>;
68        gpio-line-names = "GPIO0", "GPIO1", "GPIO2", "GPIO3", "GPIO4",
69               "EN_BLIGHT", "EN_VDD", "EN_VEE", "V_EN";
70      };
71    };
72