1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/clock/mediatek,mt7621-sysc.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: MT7621 Clock Device Tree Bindings 8 9maintainers: 10 - Sergio Paracuellos <sergio.paracuellos@gmail.com> 11 12description: | 13 The MT7621 has a PLL controller from where the cpu clock is provided 14 as well as derived clocks for the bus and the peripherals. It also 15 can gate SoC device clocks. 16 17 Each clock is assigned an identifier and client nodes use this identifier 18 to specify the clock which they consume. 19 20 All these identifiers could be found in: 21 [1]: <include/dt-bindings/clock/mt7621-clk.h>. 22 23 The clocks are provided inside a system controller node. 24 25 This node is also a reset provider for all the peripherals. 26 27 Reset related bits are defined in: 28 [2]: <include/dt-bindings/reset/mt7621-reset.h>. 29 30properties: 31 compatible: 32 items: 33 - const: mediatek,mt7621-sysc 34 - const: syscon 35 36 reg: 37 maxItems: 1 38 39 "#clock-cells": 40 description: 41 The first cell indicates the clock number, see [1] for available 42 clocks. 43 const: 1 44 45 "#reset-cells": 46 description: 47 The first cell indicates the reset bit within the register, see 48 [2] for available resets. 49 const: 1 50 51 ralink,memctl: 52 $ref: /schemas/types.yaml#/definitions/phandle 53 description: 54 phandle of syscon used to control memory registers 55 56 clock-output-names: 57 maxItems: 8 58 59required: 60 - compatible 61 - reg 62 - '#clock-cells' 63 - ralink,memctl 64 65additionalProperties: false 66 67examples: 68 - | 69 #include <dt-bindings/clock/mt7621-clk.h> 70 71 sysc: sysc@0 { 72 compatible = "mediatek,mt7621-sysc", "syscon"; 73 reg = <0x0 0x100>; 74 #clock-cells = <1>; 75 #reset-cells = <1>; 76 ralink,memctl = <&memc>; 77 clock-output-names = "xtal", "cpu", "bus", 78 "50m", "125m", "150m", 79 "250m", "270m"; 80 }; 81