1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2# Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/ 3%YAML 1.2 4--- 5$id: http://devicetree.org/schemas/mfd/ti,j721e-system-controller.yaml# 6$schema: http://devicetree.org/meta-schemas/core.yaml# 7 8title: TI J721e System Controller Registers R/W Device Tree Bindings 9 10description: | 11 This represents the Control Module registers (CTRL_MMR0) on the SoC. 12 System controller node represents a register region containing a set 13 of miscellaneous registers. The registers are not cohesive enough to 14 represent as any specific type of device. The typical use-case is 15 for some other node's driver, or platform-specific code, to acquire 16 a reference to the syscon node (e.g. by phandle, node path, or 17 search using a specific compatible value), interrogate the node (or 18 associated OS driver) to determine the location of the registers, 19 and access the registers directly. 20 21maintainers: 22 - Kishon Vijay Abraham I <kishon@ti.com> 23 - Roger Quadros <rogerq@ti.com 24 25properties: 26 compatible: 27 items: 28 - enum: 29 - ti,j721e-system-controller 30 - const: syscon 31 - const: simple-mfd 32 33 "#address-cells": 34 const: 1 35 36 "#size-cells": 37 const: 1 38 39 ranges: true 40 41# Optional children 42 43 "^serdes-ln-ctrl@[0-9a-f]+$": 44 type: object 45 description: | 46 This is the SERDES lane control mux. It should follow the bindings 47 specified in 48 Documentation/devicetree/bindings/mux/reg-mux.txt 49 50required: 51 - compatible 52 - reg 53 - "#address-cells" 54 - "#size-cells" 55 - ranges 56 57unevaluatedProperties: false 58 59examples: 60 - | 61 scm_conf: scm-conf@100000 { 62 compatible = "ti,j721e-system-controller", "syscon", "simple-mfd"; 63 reg = <0x00100000 0x1c000>; 64 #address-cells = <1>; 65 #size-cells = <1>; 66 ranges; 67 68 serdes_ln_ctrl: serdes-ln-ctrl@4080 { 69 compatible = "mmio-mux"; 70 reg = <0x00004080 0x50>; 71 }; 72 }; 73... 74