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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/mfd/st,stmpe.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: STMicroelectonics Port Expander (STMPE) description: STMicroelectronics Port Expander (STMPE) is a series of slow bus controllers for various expanded peripherals such as GPIO, keypad, touchscreen, ADC, PWM or rotator. It can contain one or several different peripherals connected to SPI or I2C. maintainers: - Linus Walleij <linus.walleij@linaro.org> allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml# properties: compatible: enum: - st,stmpe601 - st,stmpe801 - st,stmpe811 - st,stmpe1600 - st,stmpe1601 - st,stmpe2401 - st,stmpe2403 reg: maxItems: 1 interrupts: maxItems: 1 vcc-supply: true vio-supply: true reset-gpios: maxItems: 1 wakeup-source: true st,autosleep-timeout: $ref: /schemas/types.yaml#/definitions/uint32 enum: [ 4, 16, 32, 64, 128, 256, 512, 1024 ] description: Time idle before going to automatic sleep to save power st,sample-time: $ref: /schemas/types.yaml#/definitions/uint32 enum: [ 0, 1, 2, 3, 4, 5, 6 ] description: | Sample time per iteration 0 = 36 clock ticks 1 = 44 clock ticks 2 = 56 clock ticks 3 = 64 clock ticks 4 = 80 clock ticks - recommended 5 = 96 clock ticks 6 = 124 clock ticks st,mod-12b: $ref: /schemas/types.yaml#/definitions/uint32 enum: [ 0, 1 ] description: ADC bit mode 0 = 10bit ADC, 1 = 12bit ADC st,ref-sel: $ref: /schemas/types.yaml#/definitions/uint32 enum: [ 0, 1 ] description: ADC reference source 0 = internal, 1 = external st,adc-freq: $ref: /schemas/types.yaml#/definitions/uint32 enum: [ 0, 1, 2, 3 ] description: | ADC clock speed 0 = 1.625 MHz 1 = 3.25 MHz 2, 3 = 6.5 MHz adc: type: object $ref: /schemas/iio/adc/st,stmpe-adc.yaml# gpio: type: object $ref: /schemas/gpio/st,stmpe-gpio.yaml# keyboard-controller: type: object $ref: /schemas/input/matrix-keymap.yaml# unevaluatedProperties: false properties: compatible: const: st,stmpe-keypad debounce-interval: description: Debouncing interval in milliseconds $ref: /schemas/types.yaml#/definitions/uint32 st,no-autorepeat: description: If present, the keys will not autorepeat when pressed $ref: /schemas/types.yaml#/definitions/flag st,scan-count: description: Scanning cycles elapsed before key data is updated $ref: /schemas/types.yaml#/definitions/uint32 required: - compatible - linux,keymap pwm: type: object $ref: /schemas/pwm/pwm.yaml# unevaluatedProperties: false properties: compatible: const: st,stmpe-pwm "#pwm-cells": const: 2 touchscreen: type: object $ref: /schemas/input/touchscreen/touchscreen.yaml# unevaluatedProperties: false properties: compatible: const: st,stmpe-ts st,ave-ctrl: $ref: /schemas/types.yaml#/definitions/uint32 enum: [ 0, 1, 2, 3 ] description: | Sample average control 0 = 1 sample 1 = 2 samples 2 = 4 samples 3 = 8 samples st,touch-det-delay: $ref: /schemas/types.yaml#/definitions/uint32 enum: [ 0, 1, 2, 3, 4, 5, 6, 7 ] description: | Touch detection delay 0 = 10 us 1 = 50 us 2 = 100 us 3 = 500 us - recommended 4 = 1 ms 5 = 5 ms 6 = 10 ms 7 = 50 ms st,settling: $ref: /schemas/types.yaml#/definitions/uint32 enum: [ 0, 1, 2, 3, 4, 5, 6, 7 ] description: | Panel driver settling time 0 = 10 us 1 = 100 us 2 = 500 us - recommended 3 = 1 ms 4 = 5 ms 5 = 10 ms 6 = 50 ms 7 = 100 ms st,fraction-z: $ref: /schemas/types.yaml#/definitions/uint32 enum: [ 0, 1, 2, 3, 4, 5, 6, 7 ] description: Length of the fractional part in z, recommended is 7 (fraction-z ([0..7]) = Count of the fractional part) st,i-drive: $ref: /schemas/types.yaml#/definitions/uint32 enum: [ 0, 1 ] description: | current limit value of the touchscreen drivers 0 = 20 mA (typical 35 mA max) 1 = 50 mA (typical 80 mA max) required: - compatible additionalProperties: false required: - compatible - reg - interrupts examples: - | #include <dt-bindings/gpio/gpio.h> #include <dt-bindings/interrupt-controller/irq.h> #include <dt-bindings/input/input.h> i2c { #address-cells = <1>; #size-cells = <0>; port-expander@43 { compatible = "st,stmpe2401"; reg = <0x43>; reset-gpios = <&gpio 13 GPIO_ACTIVE_LOW>; interrupts = <26 IRQ_TYPE_EDGE_FALLING>; interrupt-parent = <&gpio>; vcc-supply = <&db8500_vsmps2_reg>; vio-supply = <&db8500_vsmps2_reg>; wakeup-source; st,autosleep-timeout = <1024>; gpio { compatible = "st,stmpe-gpio"; gpio-controller; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; st,norequest-mask = <0xf0f002>; }; keyboard-controller { compatible = "st,stmpe-keypad"; debounce-interval = <64>; st,scan-count = <8>; st,no-autorepeat; keypad,num-rows = <8>; keypad,num-columns = <8>; linux,keymap = < MATRIX_KEY(0x00, 0x00, KEY_1) MATRIX_KEY(0x00, 0x01, KEY_2) MATRIX_KEY(0x00, 0x02, KEY_3) MATRIX_KEY(0x00, 0x03, KEY_4) MATRIX_KEY(0x00, 0x04, KEY_5) MATRIX_KEY(0x00, 0x05, KEY_6) MATRIX_KEY(0x00, 0x06, KEY_7) MATRIX_KEY(0x00, 0x07, KEY_8) MATRIX_KEY(0x00, 0x08, KEY_9) MATRIX_KEY(0x00, 0x09, KEY_0) >; }; pwm { compatible = "st,stmpe-pwm"; #pwm-cells = <2>; }; }; port-expander@41 { compatible = "st,stmpe811"; reg = <0x41>; interrupts = <10 IRQ_TYPE_LEVEL_LOW>; interrupt-parent = <&gpio>; st,adc-freq = <1>; st,mod-12b = <1>; st,ref-sel = <0>; st,sample-time = <4>; adc { compatible = "st,stmpe-adc"; st,norequest-mask = <0x0f>; #io-channel-cells = <1>; }; gpio { compatible = "st,stmpe-gpio"; gpio-controller; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; }; pwm { compatible = "st,stmpe-pwm"; #pwm-cells = <2>; }; touchscreen { compatible = "st,stmpe-ts"; st,ave-ctrl = <3>; st,touch-det-delay = <5>; st,settling = <3>; st,fraction-z = <7>; st,i-drive = <1>; }; }; }; ... |