xref: /linux/Documentation/devicetree/bindings/display/mediatek/mediatek,ovl-2l.yaml (revision 6e7fd890f1d6ac83805409e9c346240de2705584) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/display/mediatek/mediatek,ovl-2l.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Mediatek display overlay 2 layer
8
9maintainers:
10  - Chun-Kuang Hu <chunkuang.hu@kernel.org>
11  - Philipp Zabel <p.zabel@pengutronix.de>
12
13description: |
14  Mediatek display overlay 2 layer, namely OVL-2L, provides 2 more layer
15  for OVL.
16  OVL-2L device node must be siblings to the central MMSYS_CONFIG node.
17  For a description of the MMSYS_CONFIG binding, see
18  Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
19  for details.
20
21properties:
22  compatible:
23    oneOf:
24      - enum:
25          - mediatek,mt8183-disp-ovl-2l
26          - mediatek,mt8192-disp-ovl-2l
27      - items:
28          - enum:
29              - mediatek,mt8186-disp-ovl-2l
30          - const: mediatek,mt8192-disp-ovl-2l
31
32  reg:
33    maxItems: 1
34
35  interrupts:
36    maxItems: 1
37
38  power-domains:
39    description: A phandle and PM domain specifier as defined by bindings of
40      the power controller specified by phandle. See
41      Documentation/devicetree/bindings/power/power-domain.yaml for details.
42
43  clocks:
44    items:
45      - description: OVL-2L Clock
46
47  iommus:
48    description:
49      This property should point to the respective IOMMU block with master port as argument,
50      see Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml for details.
51
52  mediatek,gce-client-reg:
53    description: The register of client driver can be configured by gce with
54      4 arguments defined in this property, such as phandle of gce, subsys id,
55      register offset and size. Each GCE subsys id is mapping to a client
56      defined in the header include/dt-bindings/gce/<chip>-gce.h.
57    $ref: /schemas/types.yaml#/definitions/phandle-array
58    maxItems: 1
59
60required:
61  - compatible
62  - reg
63  - interrupts
64  - power-domains
65  - clocks
66  - iommus
67
68additionalProperties: false
69
70examples:
71  - |
72    #include <dt-bindings/interrupt-controller/arm-gic.h>
73    #include <dt-bindings/clock/mt8183-clk.h>
74    #include <dt-bindings/power/mt8183-power.h>
75    #include <dt-bindings/gce/mt8183-gce.h>
76    #include <dt-bindings/memory/mt8183-larb-port.h>
77
78    soc {
79        #address-cells = <2>;
80        #size-cells = <2>;
81
82        ovl_2l0: ovl@14009000 {
83            compatible = "mediatek,mt8183-disp-ovl-2l";
84            reg = <0 0x14009000 0 0x1000>;
85            interrupts = <GIC_SPI 226 IRQ_TYPE_LEVEL_LOW>;
86            power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
87            clocks = <&mmsys CLK_MM_DISP_OVL0_2L>;
88            iommus = <&iommu M4U_PORT_DISP_2L_OVL0_LARB0>;
89            mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x9000 0x1000>;
90        };
91    };
92