1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 # Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
5 $id: http://devicetree.org/schemas/mfd/ti,j721e-system-controller.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: TI J721e System Controller Registers R/W Device Tree Bindings
11 This represents the Control Module registers (CTRL_MMR0) on the SoC.
12 System controller node represents a register region containing a set
13 of miscellaneous registers. The registers are not cohesive enough to
14 represent as any specific type of device. The typical use-case is
15 for some other node's driver, or platform-specific code, to acquire
16 a reference to the syscon node (e.g. by phandle, node path, or
17 search using a specific compatible value), interrogate the node (or
18 associated OS driver) to determine the location of the registers,
19 and access the registers directly.
22 - Kishon Vijay Abraham I <kishon@ti.com>
23 - Roger Quadros <rogerq@kernel.org>
29 - ti,j721e-system-controller
46 "^mux-controller@[0-9a-f]+$":
49 This is the SERDES lane control mux.
58 additionalProperties: false
62 scm_conf: scm-conf@100000 {
63 compatible = "ti,j721e-system-controller", "syscon", "simple-mfd";
64 reg = <0x00100000 0x1c000>;
69 serdes_ln_ctrl: mux-controller@4080 {
70 compatible = "mmio-mux";
71 reg = <0x00004080 0x50>;
73 #mux-control-cells = <1>;
75 <0x4080 0x3>, <0x4084 0x3>, /* SERDES0 lane0/1 select */
76 <0x4090 0x3>, <0x4094 0x3>, /* SERDES1 lane0/1 select */
77 <0x40a0 0x3>, <0x40a4 0x3>, /* SERDES2 lane0/1 select */
78 <0x40b0 0x3>, <0x40b4 0x3>, /* SERDES3 lane0/1 select */
79 <0x40c0 0x3>, <0x40c4 0x3>, <0x40c8 0x3>, <0x40cc 0x3>;
80 /* SERDES4 lane0/1/2/3 select */