xref: /freebsd/sys/contrib/device-tree/Bindings/serial/8250_omap.yaml (revision fac71e4e09885bb2afa3d984a0c239a52e1a7418) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/serial/8250_omap.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: 8250 compliant UARTs on TI's OMAP2+ and K3 SoCs
8
9maintainers:
10  - Vignesh Raghavendra <vigneshr@ti.com>
11
12allOf:
13  - $ref: /schemas/serial/serial.yaml#
14  - $ref: /schemas/serial/rs485.yaml#
15
16properties:
17  compatible:
18    oneOf:
19      - enum:
20          - ti,am3352-uart
21          - ti,am4372-uart
22          - ti,am654-uart
23          - ti,dra742-uart
24          - ti,omap2-uart
25          - ti,omap3-uart
26          - ti,omap4-uart
27      - items:
28          - enum:
29              - ti,am64-uart
30              - ti,j721e-uart
31          - const: ti,am654-uart
32
33  ti,hwmods:
34    description:
35      Must be "uart<n>", n being the instance number (1-based)
36      This property is applicable only on legacy platforms mainly omap2/3
37      and ti81xx and should not be used on other platforms.
38    $ref: /schemas/types.yaml#/definitions/string
39    deprecated: true
40
41  dmas:
42    minItems: 1
43    maxItems: 2
44
45  dma-names:
46    items:
47      - const: tx
48      - const: rx
49
50  reg:
51    maxItems: 1
52
53  interrupts:
54    minItems: 1
55    maxItems: 2
56    description:
57      First entry is module IRQ required for normal IO operation.
58      Second entry is optional and corresponds to system wakeup IRQ
59      where supported.
60
61  clocks:
62    maxItems: 1
63
64  clock-names:
65    const: fclk
66
67  rts-gpios: true
68  cts-gpios: true
69  dtr-gpios: true
70  dsr-gpios: true
71  rng-gpios: true
72  dcd-gpios: true
73  rs485-rts-active-high: true
74  rts-gpio: true
75  power-domains: true
76  clock-frequency: true
77  current-speed: true
78  overrun-throttle-ms: true
79
80required:
81  - compatible
82  - reg
83  - interrupts
84
85unevaluatedProperties: false
86
87if:
88  properties:
89    compatible:
90      contains:
91        enum:
92          - ti,omap2-uart
93          - ti,omap3-uart
94          - ti,omap4-uart
95
96then:
97  properties:
98    ti,hwmods:
99      items:
100        - pattern: "^uart([1-9])$"
101
102else:
103  properties:
104    ti,hwmods: false
105
106examples:
107  - |
108    serial@49042000 {
109        compatible = "ti,omap3-uart";
110        reg = <0x49042000 0x400>;
111        interrupts = <80>;
112        dmas = <&sdma 81 &sdma 82>;
113        dma-names = "tx", "rx";
114        ti,hwmods = "uart4";
115        clock-frequency = <48000000>;
116    };
117