mtk,scp.yaml (2722B)
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/remoteproc/mtk,scp.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Mediatek SCP Bindings 8 9maintainers: 10 - Tinghan Shen <tinghan.shen@mediatek.com> 11 12description: 13 This binding provides support for ARM Cortex M4 Co-processor found on some 14 Mediatek SoCs. 15 16properties: 17 compatible: 18 enum: 19 - mediatek,mt8183-scp 20 - mediatek,mt8186-scp 21 - mediatek,mt8192-scp 22 - mediatek,mt8195-scp 23 24 reg: 25 description: 26 Should contain the address ranges for memory regions SRAM, CFG, and, 27 on some platforms, L1TCM. 28 minItems: 2 29 maxItems: 3 30 31 reg-names: 32 minItems: 2 33 items: 34 - const: sram 35 - const: cfg 36 - const: l1tcm 37 38 clocks: 39 description: 40 Clock for co-processor (see ../clock/clock-bindings.txt). 41 Required by mt8183 and mt8192. 42 maxItems: 1 43 44 clock-names: 45 const: main 46 47 interrupts: 48 maxItems: 1 49 50 firmware-name: 51 $ref: /schemas/types.yaml#/definitions/string 52 description: 53 If present, name (or relative path) of the file within the 54 firmware search path containing the firmware image used when 55 initializing SCP. 56 57 memory-region: 58 maxItems: 1 59 60required: 61 - compatible 62 - reg 63 - reg-names 64 65allOf: 66 - if: 67 properties: 68 compatible: 69 enum: 70 - mediatek,mt8183-scp 71 - mediatek,mt8192-scp 72 then: 73 required: 74 - clocks 75 - clock-names 76 77 - if: 78 properties: 79 compatible: 80 enum: 81 - mediatek,mt8183-scp 82 - mediatek,mt8186-scp 83 then: 84 properties: 85 reg: 86 maxItems: 2 87 reg-names: 88 maxItems: 2 89 90additionalProperties: 91 type: object 92 description: 93 Subnodes of the SCP represent rpmsg devices. The names of the devices 94 are not important. The properties of these nodes are defined by the 95 individual bindings for the rpmsg devices. 96 properties: 97 mediatek,rpmsg-name: 98 $ref: /schemas/types.yaml#/definitions/string-array 99 description: 100 Contains the name for the rpmsg device. Used to match 101 the subnode to rpmsg device announced by SCP. 102 103 required: 104 - mediatek,rpmsg-name 105 106examples: 107 - | 108 #include <dt-bindings/clock/mt8192-clk.h> 109 110 scp@10500000 { 111 compatible = "mediatek,mt8192-scp"; 112 reg = <0x10500000 0x80000>, 113 <0x10700000 0x8000>, 114 <0x10720000 0xe0000>; 115 reg-names = "sram", "cfg", "l1tcm"; 116 clocks = <&infracfg CLK_INFRA_SCPSYS>; 117 clock-names = "main"; 118 119 cros_ec { 120 mediatek,rpmsg-name = "cros-ec-rpmsg"; 121 }; 122 };