1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/display/brcm,bcm2835-hdmi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Broadcom VC4 (VideoCore4) HDMI Controller
8
9 maintainers:
10 - Eric Anholt <eric@anholt.net>
11
12 properties:
13 compatible:
14 const: brcm,bcm2835-hdmi
15
16 reg:
17 items:
18 - description: HDMI register range
19 - description: HD register range
20
21 interrupts:
22 minItems: 2
23
24 clocks:
25 items:
26 - description: The pixel clock
27 - description: The HDMI state machine clock
28
29 clock-names:
30 items:
31 - const: pixel
32 - const: hdmi
33
34 ddc:
35 $ref: /schemas/types.yaml#/definitions/phandle
36 description: >
37 Phandle of the I2C controller used for DDC EDID probing
38
39 hpd-gpios:
40 maxItems: 1
41 description: >
42 The GPIO pin for the HDMI hotplug detect (if it doesn't appear
43 as an interrupt/status bit in the HDMI controller itself)
44
45 dmas:
46 maxItems: 1
47 description: >
48 Should contain one entry pointing to the DMA channel used to
49 transfer audio data.
50
51 dma-names:
52 const: audio-rx
53
54 power-domains:
55 maxItems: 1
56
57 required:
58 - compatible
59 - reg
60 - interrupts
61 - clocks
62 - ddc
63
64 additionalProperties: false
65
66 examples:
67 - |
68 #include <dt-bindings/clock/bcm2835.h>
69 #include <dt-bindings/gpio/gpio.h>
70
71 hdmi: hdmi@7e902000 {
72 compatible = "brcm,bcm2835-hdmi";
73 reg = <0x7e902000 0x600>,
74 <0x7e808000 0x100>;
75 interrupts = <2 8>, <2 9>;
76 ddc = <&i2c2>;
77 hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
78 clocks = <&clocks BCM2835_PLLH_PIX>,
79 <&clocks BCM2835_CLOCK_HSM>;
80 clock-names = "pixel", "hdmi";
81 };
82
83 ...
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