xref: /linux/Documentation/devicetree/bindings/serial/8250_omap.yaml (revision a4eb44a6435d6d8f9e642407a4a06f65eb90ca04) 
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: Bindings for 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    $ref: /schemas/types.yaml#/definitions/string
39    deprecated: true
40
41  dmas:
42    minItems: 1
43    maxItems: 2
44
45  dma-names:
46    items:
47      - const: tx
48      - const: rx
49
50  reg:
51    maxItems: 1
52
53  interrupts:
54    minItems: 1
55    maxItems: 2
56    description:
57      First entry is module IRQ required for normal IO operation.
58      Second entry is optional and corresponds to system wakeup IRQ
59      where supported.
60
61  clocks:
62    maxItems: 1
63
64  clock-names:
65    const: fclk
66
67  rts-gpios: true
68  cts-gpios: true
69  dtr-gpios: true
70  dsr-gpios: true
71  rng-gpios: true
72  dcd-gpios: true
73  rs485-rts-delay: true
74  rs485-rts-active-low: true
75  rs485-rx-during-tx: true
76  rs485-rts-active-high: true
77  linux,rs485-enabled-at-boot-time: true
78  rts-gpio: true
79  power-domains: true
80  clock-frequency: true
81  current-speed: true
82  overrun-throttle-ms: true
83
84required:
85  - compatible
86  - reg
87  - interrupts
88
89unevaluatedProperties: false
90
91if:
92  properties:
93    compatible:
94      contains:
95        enum:
96          - ti,omap2-uart
97          - ti,omap3-uart
98          - ti,omap4-uart
99
100then:
101  properties:
102    ti,hwmods:
103      items:
104        - pattern: "^uart([1-9])$"
105
106else:
107  properties:
108    ti,hwmods: false
109
110examples:
111  - |
112          serial@49042000 {
113            compatible = "ti,omap3-uart";
114            reg = <0x49042000 0x400>;
115            interrupts = <80>;
116            dmas = <&sdma 81 &sdma 82>;
117            dma-names = "tx", "rx";
118            ti,hwmods = "uart4";
119            clock-frequency = <48000000>;
120          };
121