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 reg: 34 maxItems: 1 35 36 "#address-cells": 37 const: 1 38 39 "#size-cells": 40 const: 1 41 42 ranges: true 43 44patternProperties: 45 # Optional children 46 "^serdes-ln-ctrl@[0-9a-f]+$": 47 type: object 48 description: | 49 This is the SERDES lane control mux. It should follow the bindings 50 specified in 51 Documentation/devicetree/bindings/mux/reg-mux.txt 52 53required: 54 - compatible 55 - reg 56 - "#address-cells" 57 - "#size-cells" 58 - ranges 59 60additionalProperties: false 61 62examples: 63 - | 64 scm_conf: scm-conf@100000 { 65 compatible = "ti,j721e-system-controller", "syscon", "simple-mfd"; 66 reg = <0x00100000 0x1c000>; 67 #address-cells = <1>; 68 #size-cells = <1>; 69 ranges; 70 71 serdes_ln_ctrl: serdes-ln-ctrl@4080 { 72 compatible = "mmio-mux"; 73 reg = <0x00004080 0x50>; 74 }; 75 }; 76... 77