| Tom Rini | 93743d2 | 2024-04-01 09:08:13 -0400 | [diff] [blame^] | 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,padding.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: MediaTek Display Padding |
| 8 | |
| 9 | maintainers: |
| 10 | - Chun-Kuang Hu <chunkuang.hu@kernel.org> |
| 11 | - Philipp Zabel <p.zabel@pengutronix.de> |
| 12 | |
| 13 | description: |
| 14 | Padding provides ability to add pixels to width and height of a layer with |
| 15 | specified colors. Due to hardware design, Mixer in VDOSYS1 requires |
| 16 | width of a layer to be 2-pixel-align, or 4-pixel-align when ETHDR is enabled, |
| 17 | we need Padding to deal with odd width. |
| 18 | Please notice that even if the Padding is in bypass mode, settings in |
| 19 | register must be cleared to 0, or undefined behaviors could happen. |
| 20 | |
| 21 | properties: |
| 22 | compatible: |
| 23 | enum: |
| 24 | - mediatek,mt8188-disp-padding |
| 25 | - mediatek,mt8195-mdp3-padding |
| 26 | |
| 27 | reg: |
| 28 | maxItems: 1 |
| 29 | |
| 30 | power-domains: |
| 31 | maxItems: 1 |
| 32 | |
| 33 | clocks: |
| 34 | items: |
| 35 | - description: Padding's clocks |
| 36 | |
| 37 | mediatek,gce-client-reg: |
| 38 | description: |
| 39 | GCE (Global Command Engine) is a multi-core micro processor that helps |
| 40 | its clients to execute commands without interrupting CPU. This property |
| 41 | describes GCE client's information that is composed by 4 fields. |
| 42 | 1. Phandle of the GCE (there may be several GCE processors) |
| 43 | 2. Sub-system ID defined in the dt-binding like a user ID |
| 44 | (Please refer to include/dt-bindings/gce/<chip>-gce.h) |
| 45 | 3. Offset from base address of the subsys you are at |
| 46 | 4. Size of the register the client needs |
| 47 | $ref: /schemas/types.yaml#/definitions/phandle-array |
| 48 | items: |
| 49 | items: |
| 50 | - description: Phandle of the GCE |
| 51 | - description: Subsys ID defined in the dt-binding |
| 52 | - description: Offset from base address of the subsys |
| 53 | - description: Size of register |
| 54 | maxItems: 1 |
| 55 | |
| 56 | required: |
| 57 | - compatible |
| 58 | - reg |
| 59 | - power-domains |
| 60 | - clocks |
| 61 | - mediatek,gce-client-reg |
| 62 | |
| 63 | additionalProperties: false |
| 64 | |
| 65 | examples: |
| 66 | - | |
| 67 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 68 | #include <dt-bindings/clock/mediatek,mt8188-clk.h> |
| 69 | #include <dt-bindings/power/mediatek,mt8188-power.h> |
| 70 | #include <dt-bindings/gce/mt8195-gce.h> |
| 71 | |
| 72 | soc { |
| 73 | #address-cells = <2>; |
| 74 | #size-cells = <2>; |
| 75 | |
| 76 | padding0: padding@1c11d000 { |
| 77 | compatible = "mediatek,mt8188-disp-padding"; |
| 78 | reg = <0 0x1c11d000 0 0x1000>; |
| 79 | clocks = <&vdosys1 CLK_VDO1_PADDING0>; |
| 80 | power-domains = <&spm MT8188_POWER_DOMAIN_VDOSYS1>; |
| 81 | mediatek,gce-client-reg = <&gce0 SUBSYS_1c11XXXX 0xd000 0x1000>; |
| 82 | }; |
| 83 | }; |