1*df9d235cSBilly Tsai# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2*df9d235cSBilly Tsai# Copyright (C) 2023 Aspeed, Inc. 3*df9d235cSBilly Tsai%YAML 1.2 4*df9d235cSBilly Tsai--- 5*df9d235cSBilly Tsai$id: http://devicetree.org/schemas/hwmon/aspeed,g6-pwm-tach.yaml# 6*df9d235cSBilly Tsai$schema: http://devicetree.org/meta-schemas/core.yaml# 7*df9d235cSBilly Tsai 8*df9d235cSBilly Tsaititle: ASPEED G6 PWM and Fan Tach controller 9*df9d235cSBilly Tsai 10*df9d235cSBilly Tsaimaintainers: 11*df9d235cSBilly Tsai - Billy Tsai <billy_tsai@aspeedtech.com> 12*df9d235cSBilly Tsai 13*df9d235cSBilly Tsaidescription: | 14*df9d235cSBilly Tsai The ASPEED PWM controller can support up to 16 PWM outputs. 15*df9d235cSBilly Tsai The ASPEED Fan Tacho controller can support up to 16 fan tach input. 16*df9d235cSBilly Tsai They are independent hardware blocks, which are different from the 17*df9d235cSBilly Tsai previous version of the ASPEED chip. 18*df9d235cSBilly Tsai 19*df9d235cSBilly Tsaiproperties: 20*df9d235cSBilly Tsai compatible: 21*df9d235cSBilly Tsai enum: 22*df9d235cSBilly Tsai - aspeed,ast2600-pwm-tach 23*df9d235cSBilly Tsai 24*df9d235cSBilly Tsai reg: 25*df9d235cSBilly Tsai maxItems: 1 26*df9d235cSBilly Tsai 27*df9d235cSBilly Tsai clocks: 28*df9d235cSBilly Tsai maxItems: 1 29*df9d235cSBilly Tsai 30*df9d235cSBilly Tsai resets: 31*df9d235cSBilly Tsai maxItems: 1 32*df9d235cSBilly Tsai 33*df9d235cSBilly Tsai "#pwm-cells": 34*df9d235cSBilly Tsai const: 3 35*df9d235cSBilly Tsai 36*df9d235cSBilly TsaipatternProperties: 37*df9d235cSBilly Tsai "^fan-[0-9]+$": 38*df9d235cSBilly Tsai $ref: fan-common.yaml# 39*df9d235cSBilly Tsai unevaluatedProperties: false 40*df9d235cSBilly Tsai required: 41*df9d235cSBilly Tsai - tach-ch 42*df9d235cSBilly Tsai 43*df9d235cSBilly Tsairequired: 44*df9d235cSBilly Tsai - reg 45*df9d235cSBilly Tsai - clocks 46*df9d235cSBilly Tsai - resets 47*df9d235cSBilly Tsai - "#pwm-cells" 48*df9d235cSBilly Tsai - compatible 49*df9d235cSBilly Tsai 50*df9d235cSBilly TsaiadditionalProperties: false 51*df9d235cSBilly Tsai 52*df9d235cSBilly Tsaiexamples: 53*df9d235cSBilly Tsai - | 54*df9d235cSBilly Tsai #include <dt-bindings/clock/aspeed-clock.h> 55*df9d235cSBilly Tsai pwm_tach: pwm-tach-controller@1e610000 { 56*df9d235cSBilly Tsai compatible = "aspeed,ast2600-pwm-tach"; 57*df9d235cSBilly Tsai reg = <0x1e610000 0x100>; 58*df9d235cSBilly Tsai clocks = <&syscon ASPEED_CLK_AHB>; 59*df9d235cSBilly Tsai resets = <&syscon ASPEED_RESET_PWM>; 60*df9d235cSBilly Tsai #pwm-cells = <3>; 61*df9d235cSBilly Tsai 62*df9d235cSBilly Tsai fan-0 { 63*df9d235cSBilly Tsai tach-ch = /bits/ 8 <0x0>; 64*df9d235cSBilly Tsai pwms = <&pwm_tach 0 40000 0>; 65*df9d235cSBilly Tsai }; 66*df9d235cSBilly Tsai 67*df9d235cSBilly Tsai fan-1 { 68*df9d235cSBilly Tsai tach-ch = /bits/ 8 <0x1 0x2>; 69*df9d235cSBilly Tsai pwms = <&pwm_tach 1 40000 0>; 70*df9d235cSBilly Tsai }; 71*df9d235cSBilly Tsai }; 72