atmel,at91rm9200-tcb.yaml (5453B)
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: "http://devicetree.org/schemas/soc/microchip/atmel,at91rm9200-tcb.yaml#" 5$schema: "http://devicetree.org/meta-schemas/core.yaml#" 6 7title: Atmel Timer Counter Block 8 9maintainers: 10 - Alexandre Belloni <alexandre.belloni@bootlin.com> 11 12description: | 13 The Atmel (now Microchip) SoCs have timers named Timer Counter Block. Each 14 timer has three channels with two counters each. 15 16properties: 17 compatible: 18 items: 19 - enum: 20 - atmel,at91rm9200-tcb 21 - atmel,at91sam9x5-tcb 22 - atmel,sama5d2-tcb 23 - const: simple-mfd 24 - const: syscon 25 26 reg: 27 maxItems: 1 28 29 interrupts: 30 description: 31 List of interrupts. One interrupt per TCB channel if available or one 32 interrupt for the TC block 33 minItems: 1 34 maxItems: 3 35 36 clock-names: 37 description: 38 List of clock names. Always includes t0_clk and slow clk. Also includes 39 t1_clk and t2_clk if a clock per channel is available. 40 minItems: 2 41 maxItems: 4 42 43 clocks: 44 minItems: 2 45 maxItems: 4 46 47 '#address-cells': 48 const: 1 49 50 '#size-cells': 51 const: 0 52 53patternProperties: 54 "^timer@[0-2]$": 55 description: The timer block channels that are used as timers or counters. 56 type: object 57 properties: 58 compatible: 59 items: 60 - enum: 61 - atmel,tcb-timer 62 - atmel,tcb-pwm 63 - microchip,tcb-capture 64 reg: 65 description: 66 List of channels to use for this particular timer. In Microchip TCB capture 67 mode channels are registered as a counter devices, for the qdec mode TCB0's 68 channel <0> and <1> are required. 69 70 minItems: 1 71 maxItems: 3 72 required: 73 - compatible 74 - reg 75 76 "^pwm@[0-2]$": 77 description: The timer block channels that are used as PWMs. 78 $ref: ../../pwm/pwm.yaml# 79 type: object 80 properties: 81 compatible: 82 const: atmel,tcb-pwm 83 reg: 84 description: 85 TCB channel to use for this PWM. 86 enum: [ 0, 1, 2 ] 87 88 "#pwm-cells": 89 description: 90 The only third cell flag supported by this binding is 91 PWM_POLARITY_INVERTED. 92 const: 3 93 94 required: 95 - compatible 96 - reg 97 - "#pwm-cells" 98 99 additionalProperties: false 100 101 102allOf: 103 - if: 104 properties: 105 compatible: 106 contains: 107 const: atmel,sama5d2-tcb 108 then: 109 properties: 110 clocks: 111 minItems: 3 112 maxItems: 3 113 clock-names: 114 items: 115 - const: t0_clk 116 - const: gclk 117 - const: slow_clk 118 else: 119 properties: 120 clocks: 121 minItems: 2 122 maxItems: 4 123 clock-names: 124 oneOf: 125 - items: 126 - const: t0_clk 127 - const: slow_clk 128 - items: 129 - const: t0_clk 130 - const: t1_clk 131 - const: t2_clk 132 - const: slow_clk 133 134required: 135 - compatible 136 - reg 137 - interrupts 138 - clocks 139 - clock-names 140 - '#address-cells' 141 - '#size-cells' 142 143additionalProperties: false 144 145examples: 146 - | 147 /* One interrupt per TC block: */ 148 tcb0: timer@fff7c000 { 149 compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon"; 150 #address-cells = <1>; 151 #size-cells = <0>; 152 reg = <0xfff7c000 0x100>; 153 interrupts = <18 4>; 154 clocks = <&tcb0_clk>, <&clk32k>; 155 clock-names = "t0_clk", "slow_clk"; 156 157 timer@0 { 158 compatible = "atmel,tcb-timer"; 159 reg = <0>, <1>; 160 }; 161 162 timer@2 { 163 compatible = "atmel,tcb-timer"; 164 reg = <2>; 165 }; 166 }; 167 168 /* One interrupt per TC channel in a TC block: */ 169 tcb1: timer@fffdc000 { 170 compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon"; 171 #address-cells = <1>; 172 #size-cells = <0>; 173 reg = <0xfffdc000 0x100>; 174 interrupts = <26 4>, <27 4>, <28 4>; 175 clocks = <&tcb1_clk>, <&clk32k>; 176 clock-names = "t0_clk", "slow_clk"; 177 178 timer@0 { 179 compatible = "atmel,tcb-timer"; 180 reg = <0>; 181 }; 182 183 timer@1 { 184 compatible = "atmel,tcb-timer"; 185 reg = <1>; 186 }; 187 188 pwm@2 { 189 compatible = "atmel,tcb-pwm"; 190 reg = <2>; 191 #pwm-cells = <3>; 192 }; 193 }; 194 /* TCB0 Capture with QDEC: */ 195 timer@f800c000 { 196 compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon"; 197 #address-cells = <1>; 198 #size-cells = <0>; 199 reg = <0xfff7c000 0x100>; 200 interrupts = <18 4>; 201 clocks = <&tcb0_clk>, <&clk32k>; 202 clock-names = "t0_clk", "slow_clk"; 203 204 timer@0 { 205 compatible = "microchip,tcb-capture"; 206 reg = <0>, <1>; 207 }; 208 209 timer@2 { 210 compatible = "atmel,tcb-timer"; 211 reg = <2>; 212 }; 213 };