xref: /freebsd/sys/contrib/device-tree/Bindings/pinctrl/renesas,rza2-pinctrl.yaml (revision e6bfd18d21b225af6a0ed67ceeaf1293b7b9eba5) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pinctrl/renesas,rza2-pinctrl.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas RZ/A2 combined Pin and GPIO controller
8
9maintainers:
10  - Chris Brandt <chris.brandt@renesas.com>
11  - Geert Uytterhoeven <geert+renesas@glider.be>
12
13description:
14  The Renesas SoCs of the RZ/A2 series feature a combined Pin and GPIO
15  controller.
16  Pin multiplexing and GPIO configuration is performed on a per-pin basis.
17  Each port features up to 8 pins, each of them configurable for GPIO function
18  (port mode) or in alternate function mode.
19  Up to 8 different alternate function modes exist for each single pin.
20
21properties:
22  compatible:
23    const: "renesas,r7s9210-pinctrl" # RZ/A2M
24
25  reg:
26    maxItems: 1
27
28  gpio-controller: true
29
30  '#gpio-cells':
31    const: 2
32    description:
33      The first cell contains the global GPIO port index, constructed using the
34      RZA2_PIN() helper macro in r7s9210-pinctrl.h.
35      E.g. "RZA2_PIN(PORT6, 0)" for P6_0.
36
37  gpio-ranges:
38    maxItems: 1
39
40patternProperties:
41  "^.*$":
42    if:
43      type: object
44    then:
45      allOf:
46        - $ref: pincfg-node.yaml#
47        - $ref: pinmux-node.yaml#
48      description:
49        The child nodes of the pin controller designate pins to be used for
50        specific peripheral functions or as GPIO.
51
52        A pin multiplexing sub-node describes how to configure a set of
53        (or a single) pin in some desired alternate function mode.
54        The values for the pinmux properties are a combination of port name,
55        pin number and the desired function index. Use the RZA2_PINMUX macro
56        located in include/dt-bindings/pinctrl/r7s9210-pinctrl.h to easily
57        define these.
58        For assigning GPIO pins, use the macro RZA2_PIN also in
59        to express the desired port pin.
60
61      properties:
62        phandle: true
63
64        pinmux:
65          description:
66            Values are constructed from GPIO port number, pin number, and
67            alternate function configuration number using the RZA2_PINMUX()
68            helper macro in r7s9210-pinctrl.h.
69
70      required:
71        - pinmux
72
73      additionalProperties: false
74
75allOf:
76  - $ref: "pinctrl.yaml#"
77
78required:
79  - compatible
80  - reg
81  - gpio-controller
82  - '#gpio-cells'
83  - gpio-ranges
84
85additionalProperties: false
86
87examples:
88  - |
89    #include <dt-bindings/pinctrl/r7s9210-pinctrl.h>
90    pinctrl: pinctrl@fcffe000 {
91            compatible = "renesas,r7s9210-pinctrl";
92            reg = <0xfcffe000 0x1000>;
93
94            gpio-controller;
95            #gpio-cells = <2>;
96            gpio-ranges = <&pinctrl 0 0 176>;
97
98            /* Serial Console */
99            scif4_pins: serial4 {
100                    pinmux = <RZA2_PINMUX(PORT9, 0, 4)>, /* TxD4 */
101                             <RZA2_PINMUX(PORT9, 1, 4)>; /* RxD4 */
102            };
103    };
104