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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/input/iqs269a.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: Azoteq IQS269A Capacitive Touch Controller maintainers: - Jeff LaBundy <jeff@labundy.com> description: | The Azoteq IQS269A is an 8-channel capacitive touch controller that features additional Hall-effect and inductive sensing capabilities. Link to datasheet: https://www.azoteq.com/ properties: compatible: const: azoteq,iqs269a reg: maxItems: 1 interrupts: maxItems: 1 "#address-cells": const: 1 "#size-cells": const: 0 azoteq,hall-enable: type: boolean description: Enables Hall-effect sensing on channels 6 and 7. In this case, keycodes assigned to channel 6 are ignored and keycodes assigned to channel 7 are interpreted as switch codes. Refer to the datasheet for requirements im- posed on channels 6 and 7 by Hall-effect sensing. azoteq,suspend-mode: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2, 3] default: 0 description: | Specifies the power mode during suspend as follows: 0: Automatic (same as normal runtime, i.e. suspend/resume disabled) 1: Low power (all sensing at a reduced reporting rate) 2: Ultra-low power (channel 0 proximity sensing) 3: Halt (no sensing) azoteq,clk-div: type: boolean description: Divides the device's core clock by a factor of 4. azoteq,ulp-update: $ref: /schemas/types.yaml#/definitions/uint32 minimum: 0 maximum: 7 default: 3 description: Specifies the ultra-low-power mode update rate. azoteq,reseed-offset: type: boolean description: Applies an 8-count offset to all long-term averages upon either ATI or reseed events. azoteq,filt-str-lp-lta: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2, 3] default: 0 description: Specifies the long-term average filter strength during low-power mode. azoteq,filt-str-lp-cnt: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2, 3] default: 0 description: Specifies the raw count filter strength during low-power mode. azoteq,filt-str-np-lta: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2, 3] default: 0 description: Specifies the long-term average filter strength during normal-power mode. azoteq,filt-str-np-cnt: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2, 3] default: 0 description: Specifies the raw count filter strength during normal-power mode. azoteq,rate-np-ms: minimum: 0 maximum: 255 default: 16 description: Specifies the report rate (in ms) during normal-power mode. azoteq,rate-lp-ms: minimum: 0 maximum: 255 default: 160 description: Specifies the report rate (in ms) during low-power mode. azoteq,rate-ulp-ms: multipleOf: 16 minimum: 0 maximum: 4080 default: 160 description: Specifies the report rate (in ms) during ultra-low-power mode. azoteq,timeout-pwr-ms: multipleOf: 512 minimum: 0 maximum: 130560 default: 2560 description: Specifies the length of time (in ms) to wait for an event during normal- power mode before transitioning to low-power mode. azoteq,timeout-lta-ms: multipleOf: 512 minimum: 0 maximum: 130560 default: 32768 description: Specifies the length of time (in ms) to wait before resetting the long- term average of all channels. Specify the maximum timeout to disable it altogether. azoteq,ati-band-disable: type: boolean description: Disables the ATI band check. azoteq,ati-lp-only: type: boolean description: Limits automatic ATI to low-power mode. azoteq,ati-band-tighten: type: boolean description: Tightens the ATI band from 1/8 to 1/16 of the desired target. azoteq,filt-disable: type: boolean description: Disables all raw count filtering. azoteq,gpio3-select: $ref: /schemas/types.yaml#/definitions/uint32 minimum: 0 maximum: 7 default: 0 description: Selects the channel for which the GPIO3 pin represents touch state. azoteq,dual-direction: type: boolean description: Specifies that long-term averages are to freeze in the presence of either increasing or decreasing counts, thereby permitting events to be reported in either direction. azoteq,tx-freq: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2, 3] default: 0 description: | Specifies the inductive sensing excitation frequency as follows (paren- thesized numbers represent the frequency if 'azoteq,clk-div' is present): 0: 16 MHz (4 MHz) 1: 8 MHz (2 MHz) 2: 4 MHz (1 MHz) 3: 2 MHz (500 kHz) azoteq,global-cap-increase: type: boolean description: Increases the global capacitance adder from 0.5 pF to 1.5 pF. azoteq,reseed-select: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2, 3] default: 0 description: | Specifies the event(s) that prompt the device to reseed (i.e. reset the long-term average) of an associated channel as follows: 0: None 1: Proximity 2: Proximity or touch 3: Proximity, touch or deep touch azoteq,tracking-enable: type: boolean description: Enables all associated channels to track their respective reference channels. azoteq,filt-str-slider: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2, 3] default: 1 description: Specifies the slider coordinate filter strength. patternProperties: "^channel@[0-7]$": type: object description: Represents a single sensing channel. A channel is active if defined and inactive otherwise. properties: reg: minimum: 0 maximum: 7 description: Index of the channel. azoteq,reseed-disable: type: boolean description: Prevents the channel from being reseeded if the long-term average timeout (defined in 'azoteq,timeout-lta') expires. azoteq,blocking-enable: type: boolean description: Specifies that the channel is a blocking channel. azoteq,slider0-select: type: boolean description: Specifies that the channel participates in slider 0. azoteq,slider1-select: type: boolean description: Specifies that the channel participates in slider 1. azoteq,rx-enable: $ref: /schemas/types.yaml#/definitions/uint32-array minItems: 1 maxItems: 8 items: minimum: 0 maximum: 7 description: Specifies the CRX pin(s) associated with the channel. By default, only the CRX pin corresponding to the channel's index is enabled (e.g. CRX0 for channel 0). azoteq,tx-enable: $ref: /schemas/types.yaml#/definitions/uint32-array minItems: 1 maxItems: 8 items: minimum: 0 maximum: 7 default: [0, 1, 2, 3, 4, 5, 6, 7] description: Specifies the TX pin(s) associated with the channel. azoteq,meas-cap-decrease: type: boolean description: Decreases the internal measurement capacitance from 60 pF to 15 pF. azoteq,rx-float-inactive: type: boolean description: Floats any inactive CRX pins instead of grounding them. azoteq,local-cap-size: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2] default: 0 description: | Specifies the capacitance to be added to the channel as follows: 0: None 1: Global adder (based on 'azoteq,global-cap-increase') 2: Global adder + 0.5 pF azoteq,invert-enable: type: boolean description: Inverts the polarity of the states reported for proximity, touch and deep-touch events relative to their respective thresholds. azoteq,proj-bias: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2, 3] default: 2 description: | Specifies the bias current applied during projected-capacitance sensing as follows: 0: 2.5 uA 1: 5 uA 2: 10 uA 3: 20 uA azoteq,sense-mode: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 9, 14, 15] default: 0 description: | Specifies the channel's sensing mode as follows: 0: Self capacitance 1: Projected capacitance 9: Self or mutual inductance 14: Hall effect 15: Temperature azoteq,sense-freq: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2, 3] default: 1 description: | Specifies the channel's sensing frequency as follows (parenthesized numbers represent the frequency if 'azoteq,clk-div' is present): 0: 4 MHz (1 MHz) 1: 2 MHz (500 kHz) 2: 1 MHz (250 kHz) 3: 500 kHz (125 kHz) azoteq,static-enable: type: boolean description: Enables the static front-end for the channel. azoteq,ati-mode: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2, 3] default: 3 description: | Specifies the channel's ATI mode as follows: 0: Disabled 1: Semi-partial 2: Partial 3: Full azoteq,ati-base: $ref: /schemas/types.yaml#/definitions/uint32 enum: [75, 100, 150, 200] default: 100 description: Specifies the channel's ATI base. azoteq,ati-target: $ref: /schemas/types.yaml#/definitions/uint32 multipleOf: 32 minimum: 0 maximum: 2016 default: 512 description: Specifies the channel's ATI target. azoteq,assoc-select: $ref: /schemas/types.yaml#/definitions/uint32-array minItems: 1 maxItems: 8 items: minimum: 0 maximum: 7 description: Specifies the associated channels for which the channel serves as a reference channel. By default, no channels are selected. azoteq,assoc-weight: $ref: /schemas/types.yaml#/definitions/uint32 minimum: 0 maximum: 255 default: 0 description: Specifies the channel's impact weight if it acts as an associated channel (0 = 0% impact, 255 = 200% impact). patternProperties: "^event-prox(-alt)?$": type: object $ref: input.yaml# description: Represents a proximity event reported by the channel in response to a decrease in counts. Node names suffixed with '-alt' instead corre- spond to an increase in counts. By default, the long-term average tracks an increase in counts such that only events corresponding to a decrease in counts are reported (refer to the datasheet for more information). Specify 'azoteq,dual-direction' to freeze the long-term average when the counts increase or decrease such that events of either direction can be reported. Alternatively, specify 'azoteq,invert-enable' to in- vert the polarity of the states reported by the channel. Complementary events (e.g. event-touch and event-touch-alt) can both be present and specify different key or switch codes, but not differ- ent thresholds or hysteresis (if applicable). properties: azoteq,thresh: $ref: /schemas/types.yaml#/definitions/uint32 minimum: 0 maximum: 255 default: 10 description: Specifies the threshold for the event. linux,code: true additionalProperties: false "^event-touch(-alt)?$": type: object $ref: input.yaml# description: Represents a touch event reported by the channel. properties: azoteq,thresh: $ref: /schemas/types.yaml#/definitions/uint32 minimum: 0 maximum: 255 default: 8 description: Specifies the threshold for the event. azoteq,hyst: $ref: /schemas/types.yaml#/definitions/uint32 minimum: 0 maximum: 15 default: 4 description: Specifies the hysteresis for the event. linux,code: true additionalProperties: false "^event-deep(-alt)?$": type: object $ref: input.yaml# description: Represents a deep-touch event reported by the channel. properties: azoteq,thresh: $ref: /schemas/types.yaml#/definitions/uint32 minimum: 0 maximum: 255 default: 26 description: Specifies the threshold for the event. azoteq,hyst: $ref: /schemas/types.yaml#/definitions/uint32 minimum: 0 maximum: 15 default: 0 description: Specifies the hysteresis for the event. linux,code: true additionalProperties: false required: - reg additionalProperties: false required: - compatible - reg - interrupts - "#address-cells" - "#size-cells" additionalProperties: false examples: - | #include <dt-bindings/input/input.h> #include <dt-bindings/interrupt-controller/irq.h> i2c { #address-cells = <1>; #size-cells = <0>; touch@44 { #address-cells = <1>; #size-cells = <0>; compatible = "azoteq,iqs269a"; reg = <0x44>; interrupt-parent = <&gpio>; interrupts = <17 IRQ_TYPE_LEVEL_LOW>; azoteq,hall-enable; azoteq,suspend-mode = <2>; channel@0 { reg = <0x0>; event-prox { linux,code = <KEY_POWER>; }; }; channel@1 { reg = <0x1>; azoteq,slider0-select; }; channel@2 { reg = <0x2>; azoteq,slider0-select; }; channel@3 { reg = <0x3>; azoteq,slider0-select; }; channel@4 { reg = <0x4>; azoteq,slider0-select; }; channel@5 { reg = <0x5>; azoteq,slider0-select; }; channel@6 { reg = <0x6>; azoteq,invert-enable; azoteq,static-enable; azoteq,reseed-disable; azoteq,rx-enable = <0>; azoteq,sense-freq = <0x0>; azoteq,sense-mode = <0xE>; azoteq,ati-mode = <0x0>; azoteq,ati-base = <200>; azoteq,ati-target = <320>; }; channel@7 { reg = <0x7>; azoteq,invert-enable; azoteq,static-enable; azoteq,reseed-disable; azoteq,rx-enable = <0>, <6>; azoteq,sense-freq = <0x0>; azoteq,sense-mode = <0xE>; azoteq,ati-mode = <0x3>; azoteq,ati-base = <200>; azoteq,ati-target = <320>; event-touch { linux,code = <SW_LID>; }; }; }; }; ... |