xref: /freebsd/sys/contrib/device-tree/Bindings/display/mediatek/mediatek,mdp-rdma.yaml (revision b97ee269eae3cbaf35c18f51a459aea581c2a7dc) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/display/mediatek/mediatek,mdp-rdma.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: MediaTek MDP RDMA
8
9maintainers:
10  - Chun-Kuang Hu <chunkuang.hu@kernel.org>
11  - Philipp Zabel <p.zabel@pengutronix.de>
12
13description:
14  The MediaTek MDP RDMA stands for Read Direct Memory Access.
15  It provides real time data to the back-end panel driver, such as DSI,
16  DPI and DP_INTF.
17  It contains one line buffer to store the sufficient pixel data.
18  RDMA device node must be siblings to the central MMSYS_CONFIG node.
19  For a description of the MMSYS_CONFIG binding, see
20  Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml for details.
21
22properties:
23  compatible:
24    const: mediatek,mt8195-vdo1-rdma
25
26  reg:
27    maxItems: 1
28
29  interrupts:
30    maxItems: 1
31
32  power-domains:
33    maxItems: 1
34
35  clocks:
36    items:
37      - description: RDMA Clock
38
39  iommus:
40    maxItems: 1
41
42  mediatek,gce-client-reg:
43    description:
44      The register of display function block to be set by gce. There are 4 arguments,
45      such as gce node, subsys id, offset and register size. The subsys id that is
46      mapping to the register of display function blocks is defined in the gce header
47      include/dt-bindings/gce/<chip>-gce.h of each chips.
48    $ref: /schemas/types.yaml#/definitions/phandle-array
49    items:
50      items:
51        - description: phandle of GCE
52        - description: GCE subsys id
53        - description: register offset
54        - description: register size
55    maxItems: 1
56
57required:
58  - compatible
59  - reg
60  - power-domains
61  - clocks
62  - iommus
63  - mediatek,gce-client-reg
64
65additionalProperties: false
66
67examples:
68  - |
69    #include <dt-bindings/interrupt-controller/arm-gic.h>
70    #include <dt-bindings/clock/mt8195-clk.h>
71    #include <dt-bindings/power/mt8195-power.h>
72    #include <dt-bindings/gce/mt8195-gce.h>
73    #include <dt-bindings/memory/mt8195-memory-port.h>
74
75    soc {
76        #address-cells = <2>;
77        #size-cells = <2>;
78
79        rdma@1c104000 {
80            compatible = "mediatek,mt8195-vdo1-rdma";
81            reg = <0 0x1c104000 0 0x1000>;
82            interrupts = <GIC_SPI 495 IRQ_TYPE_LEVEL_HIGH 0>;
83            clocks = <&vdosys1 CLK_VDO1_MDP_RDMA0>;
84            power-domains = <&spm MT8195_POWER_DOMAIN_VDOSYS1>;
85            iommus = <&iommu_vdo M4U_PORT_L2_MDP_RDMA0>;
86            mediatek,gce-client-reg = <&gce0 SUBSYS_1c10XXXX 0x4000 0x1000>;
87        };
88    };
89