tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/display/st,stm32-ltdc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: STMicroelectronics STM32 lcd-tft display controller
8
9maintainers:
10 - Philippe Cornu <philippe.cornu@foss.st.com>
11 - Yannick Fertre <yannick.fertre@foss.st.com>
12
13properties:
14 compatible:
15 enum:
16 - st,stm32-ltdc
17 - st,stm32mp251-ltdc
18 - st,stm32mp255-ltdc
19
20 reg:
21 maxItems: 1
22
23 interrupts:
24 items:
25 - description: events interrupt line.
26 - description: errors interrupt line.
27 minItems: 1
28
29 clocks:
30 minItems: 1
31 maxItems: 4
32
33 clock-names:
34 items:
35 - const: lcd
36 - const: bus
37 - const: ref
38 - const: lvds
39 minItems: 1
40
41 resets:
42 maxItems: 1
43
44 access-controllers:
45 maxItems: 1
46
47 port:
48 $ref: /schemas/graph.yaml#/properties/port
49 description: |
50 Video port for DPI RGB output.
51 ltdc has one video port with up to 2 endpoints:
52 - for external dpi rgb panel or bridge, using gpios.
53 - for internal dpi input of the MIPI DSI host controller.
54 Note: These 2 endpoints cannot be activated simultaneously.
55
56required:
57 - compatible
58 - reg
59 - interrupts
60 - clocks
61 - clock-names
62 - resets
63 - port
64
65allOf:
66 - if:
67 properties:
68 compatible:
69 contains:
70 enum:
71 - st,stm32-ltdc
72 then:
73 properties:
74 clocks:
75 maxItems: 1
76 clock-names:
77 maxItems: 1
78 - if:
79 properties:
80 compatible:
81 contains:
82 enum:
83 - st,stm32mp251-ltdc
84 then:
85 properties:
86 clocks:
87 minItems: 2
88 maxItems: 2
89 clock-names:
90 minItems: 2
91 maxItems: 2
92 - if:
93 properties:
94 compatible:
95 contains:
96 enum:
97 - st,stm32mp255-ltdc
98 then:
99 properties:
100 clocks:
101 minItems: 4
102 clock-names:
103 minItems: 4
104
105additionalProperties: false
106
107examples:
108 - |
109 #include <dt-bindings/interrupt-controller/arm-gic.h>
110 #include <dt-bindings/clock/stm32mp1-clks.h>
111 #include <dt-bindings/reset/stm32mp1-resets.h>
112 ltdc: display-controller@40016800 {
113 compatible = "st,stm32-ltdc";
114 reg = <0x5a001000 0x400>;
115 interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>,
116 <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
117 clocks = <&rcc LTDC_PX>;
118 clock-names = "lcd";
119 resets = <&rcc LTDC_R>;
120
121 port {
122 ltdc_out_dsi: endpoint {
123 remote-endpoint = <&dsi_in>;
124 };
125 };
126 };
127
128...