1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/display/bridge/nxp,tda998x.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: NXP TDA998x HDMI transmitter
8
9 maintainers:
10 - Russell King <linux@armlinux.org.uk>
11
12 properties:
13 compatible:
14 const: nxp,tda998x
15
16 reg:
17 maxItems: 1
18
19 interrupts:
20 maxItems: 1
21
22 video-ports:
23 $ref: /schemas/types.yaml#/definitions/uint32
24 default: 0x230145
25 maximum: 0xffffff
26 description:
27 24 bits value which defines how the video controller output is wired to
28 the TDA998x input.
29
30 audio-ports:
31 description:
32 Array of 2 values per DAI (Documentation/sound/soc/dai.rst).
33 The implementation allows one or two DAIs.
34 If two DAIs are defined, they must be of different type.
35 $ref: /schemas/types.yaml#/definitions/uint32-matrix
36 minItems: 1
37 maxItems: 2
38 items:
39 items:
40 - description: |
41 The first value defines the DAI type: TDA998x_SPDIF or TDA998x_I2S
42 (see include/dt-bindings/display/tda998x.h).
43 enum: [ 1, 2 ]
44 - description:
45 The second value defines the tda998x AP_ENA reg content when the
46 DAI in question is used.
47 maximum: 0xff
48
49 '#sound-dai-cells':
50 enum: [ 0, 1 ]
51
52 nxp,calib-gpios:
53 maxItems: 1
54 description:
55 Calibration GPIO, which must correspond with the gpio used for the
56 TDA998x interrupt pin.
57
58 port:
59 $ref: /schemas/graph.yaml#/properties/port
60 description: Parallel input port
61
62 ports:
63 $ref: /schemas/graph.yaml#/properties/ports
64
65 properties:
66 port@0:
67 type: object
68 description: Parallel input port
69
70 port@1:
71 type: object
72 description: HDMI output port
73
74 required:
75 - compatible
76 - reg
77
78 oneOf:
79 - required:
80 - port
81 - required:
82 - ports
83
84 additionalProperties: false
85
86 examples:
87 - |
88 #include <dt-bindings/display/tda998x.h>
89 #include <dt-bindings/interrupt-controller/irq.h>
90
91 i2c {
92 #address-cells = <1>;
93 #size-cells = <0>;
94
95 tda998x: hdmi-encoder@70 {
96 compatible = "nxp,tda998x";
97 reg = <0x70>;
98 interrupt-parent = <&gpio0>;
99 interrupts = <27 IRQ_TYPE_EDGE_FALLING>;
100 video-ports = <0x230145>;
101
102 #sound-dai-cells = <1>;
103 /* DAI-format / AP_ENA reg value */
104 audio-ports = <TDA998x_SPDIF 0x04>,
105 <TDA998x_I2S 0x03>;
106
107 port {
108 tda998x_in: endpoint {
109 remote-endpoint = <&lcdc_0>;
110 };
111 };
112 };
113 };
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