baikal,bt1-axi.yaml (2532B)
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2# Copyright (C) 2020 BAIKAL ELECTRONICS, JSC 3%YAML 1.2 4--- 5$id: http://devicetree.org/schemas/bus/baikal,bt1-axi.yaml# 6$schema: http://devicetree.org/meta-schemas/core.yaml# 7 8title: Baikal-T1 AXI-bus 9 10maintainers: 11 - Serge Semin <fancer.lancer@gmail.com> 12 13description: | 14 AXI3-bus is the main communication bus of Baikal-T1 SoC connecting all 15 high-speed peripheral IP-cores with RAM controller and with MIPS P5600 16 cores. Traffic arbitration is done by means of DW AXI Interconnect (so 17 called AXI Main Interconnect) routing IO requests from one block to 18 another: from CPU to SoC peripherals and between some SoC peripherals 19 (mostly between peripheral devices and RAM, but also between DMA and 20 some peripherals). In case of any protocol error, device not responding 21 an IRQ is raised and a faulty situation is reported to the AXI EHB 22 (Errors Handler Block) embedded on top of the DW AXI Interconnect and 23 accessible by means of the Baikal-T1 System Controller. 24 25allOf: 26 - $ref: /schemas/simple-bus.yaml# 27 28properties: 29 compatible: 30 contains: 31 const: baikal,bt1-axi 32 33 reg: 34 minItems: 1 35 items: 36 - description: Synopsys DesignWare AXI Interconnect QoS registers 37 - description: AXI EHB MMIO system controller registers 38 39 reg-names: 40 minItems: 1 41 items: 42 - const: qos 43 - const: ehb 44 45 '#interconnect-cells': 46 const: 1 47 48 syscon: 49 $ref: /schemas/types.yaml#/definitions/phandle 50 description: Phandle to the Baikal-T1 System Controller DT node 51 52 interrupts: 53 maxItems: 1 54 55 clocks: 56 items: 57 - description: Main Interconnect uplink reference clock 58 59 clock-names: 60 items: 61 - const: aclk 62 63 resets: 64 items: 65 - description: Main Interconnect reset line 66 67 reset-names: 68 items: 69 - const: arst 70 71unevaluatedProperties: false 72 73required: 74 - compatible 75 - reg 76 - reg-names 77 - syscon 78 - interrupts 79 - clocks 80 - clock-names 81 82examples: 83 - | 84 #include <dt-bindings/interrupt-controller/mips-gic.h> 85 86 bus@1f05a000 { 87 compatible = "baikal,bt1-axi", "simple-bus"; 88 reg = <0x1f05a000 0x1000>, 89 <0x1f04d110 0x8>; 90 reg-names = "qos", "ehb"; 91 #address-cells = <1>; 92 #size-cells = <1>; 93 #interconnect-cells = <1>; 94 95 syscon = <&syscon>; 96 97 ranges; 98 99 interrupts = <GIC_SHARED 127 IRQ_TYPE_LEVEL_HIGH>; 100 101 clocks = <&ccu_axi 0>; 102 clock-names = "aclk"; 103 104 resets = <&ccu_axi 0>; 105 reset-names = "arst"; 106 }; 107...