| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | # Copyright (c) 2020 MediaTek Inc. |
| 3 | %YAML 1.2 |
| 4 | --- |
| 5 | $id: http://devicetree.org/schemas/memory-controllers/mediatek,smi-larb.yaml# |
| 6 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 7 | |
| 8 | title: SMI (Smart Multimedia Interface) Local Arbiter |
| 9 | |
| 10 | maintainers: |
| 11 | - Yong Wu <yong.wu@mediatek.com> |
| 12 | |
| 13 | description: | |
| 14 | The hardware block diagram please check bindings/iommu/mediatek,iommu.yaml |
| 15 | |
| 16 | properties: |
| 17 | compatible: |
| 18 | oneOf: |
| 19 | - enum: |
| 20 | - mediatek,mt2701-smi-larb |
| 21 | - mediatek,mt2712-smi-larb |
| 22 | - mediatek,mt6779-smi-larb |
| 23 | - mediatek,mt6795-smi-larb |
| 24 | - mediatek,mt8167-smi-larb |
| 25 | - mediatek,mt8173-smi-larb |
| 26 | - mediatek,mt8183-smi-larb |
| 27 | - mediatek,mt8186-smi-larb |
| 28 | - mediatek,mt8188-smi-larb |
| 29 | - mediatek,mt8192-smi-larb |
| 30 | - mediatek,mt8195-smi-larb |
| 31 | |
| 32 | - description: for mt7623 |
| 33 | items: |
| 34 | - const: mediatek,mt7623-smi-larb |
| 35 | - const: mediatek,mt2701-smi-larb |
| 36 | |
| 37 | - items: |
| 38 | - const: mediatek,mt8365-smi-larb |
| 39 | - const: mediatek,mt8186-smi-larb |
| 40 | |
| 41 | reg: |
| 42 | maxItems: 1 |
| 43 | |
| 44 | clocks: |
| 45 | description: | |
| 46 | apb and smi are mandatory. gals(global async local sync) is optional. |
| 47 | minItems: 2 |
| 48 | items: |
| 49 | - description: apb is Advanced Peripheral Bus clock, It's the clock for |
| 50 | setting the register. |
| 51 | - description: smi is the clock for transfer data and command. |
| 52 | - description: the clock for gals. |
| 53 | |
| 54 | clock-names: |
| 55 | minItems: 2 |
| 56 | maxItems: 3 |
| 57 | |
| 58 | power-domains: |
| 59 | maxItems: 1 |
| 60 | |
| 61 | mediatek,smi: |
| 62 | $ref: /schemas/types.yaml#/definitions/phandle |
| 63 | description: a phandle to the smi_common node. |
| 64 | |
| 65 | mediatek,larb-id: |
| 66 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 67 | minimum: 0 |
| 68 | maximum: 31 |
| 69 | description: the hardware id of this larb. It's only required when this |
| 70 | hardware id is not consecutive from its M4U point of view. |
| 71 | |
| 72 | required: |
| 73 | - compatible |
| 74 | - reg |
| 75 | - clocks |
| 76 | - clock-names |
| 77 | - power-domains |
| 78 | |
| 79 | allOf: |
| 80 | - if: # HW has gals |
| 81 | properties: |
| 82 | compatible: |
| 83 | enum: |
| 84 | - mediatek,mt8183-smi-larb |
| 85 | - mediatek,mt8186-smi-larb |
| 86 | - mediatek,mt8188-smi-larb |
| 87 | - mediatek,mt8195-smi-larb |
| 88 | |
| 89 | then: |
| 90 | properties: |
| 91 | clocks: |
| 92 | minItems: 2 |
| 93 | maxItems: 3 |
| 94 | clock-names: |
| 95 | minItems: 2 |
| 96 | items: |
| 97 | - const: apb |
| 98 | - const: smi |
| 99 | - const: gals |
| 100 | |
| 101 | else: |
| 102 | properties: |
| 103 | clocks: |
| 104 | minItems: 2 |
| 105 | maxItems: 2 |
| 106 | clock-names: |
| 107 | items: |
| 108 | - const: apb |
| 109 | - const: smi |
| 110 | |
| 111 | - if: |
| 112 | properties: |
| 113 | compatible: |
| 114 | contains: |
| 115 | enum: |
| 116 | - mediatek,mt2701-smi-larb |
| 117 | - mediatek,mt2712-smi-larb |
| 118 | - mediatek,mt6779-smi-larb |
| 119 | - mediatek,mt8186-smi-larb |
| 120 | - mediatek,mt8188-smi-larb |
| 121 | - mediatek,mt8192-smi-larb |
| 122 | - mediatek,mt8195-smi-larb |
| 123 | |
| 124 | then: |
| 125 | required: |
| 126 | - mediatek,larb-id |
| 127 | |
| 128 | additionalProperties: false |
| 129 | |
| 130 | examples: |
| 131 | - |+ |
| 132 | #include <dt-bindings/clock/mt8173-clk.h> |
| 133 | #include <dt-bindings/power/mt8173-power.h> |
| 134 | |
| 135 | larb1: larb@16010000 { |
| 136 | compatible = "mediatek,mt8173-smi-larb"; |
| 137 | reg = <0x16010000 0x1000>; |
| 138 | mediatek,smi = <&smi_common>; |
| 139 | power-domains = <&scpsys MT8173_POWER_DOMAIN_VDEC>; |
| 140 | clocks = <&vdecsys CLK_VDEC_CKEN>, |
| 141 | <&vdecsys CLK_VDEC_LARB_CKEN>; |
| 142 | clock-names = "apb", "smi"; |
| 143 | }; |