From patchwork Wed Apr 26 11:21:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linus Walleij X-Patchwork-Id: 1774051 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=AL84eNVX; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4Q5xK9343yz23vF for ; Wed, 26 Apr 2023 21:21:49 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240560AbjDZLVr (ORCPT ); Wed, 26 Apr 2023 07:21:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60874 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240580AbjDZLVo (ORCPT ); Wed, 26 Apr 2023 07:21:44 -0400 Received: from mail-lf1-x12f.google.com (mail-lf1-x12f.google.com [IPv6:2a00:1450:4864:20::12f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7EC425275 for ; Wed, 26 Apr 2023 04:21:43 -0700 (PDT) Received: by mail-lf1-x12f.google.com with SMTP id 2adb3069b0e04-4edcdfa8638so7606627e87.2 for ; Wed, 26 Apr 2023 04:21:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1682508102; x=1685100102; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=Zyn3pWh1I5zYmXKJZnDWojm/WjqJCfT4hRVyzg3c8zM=; b=AL84eNVXhM+h+pb78WkGyas5/MFVD8cGu6qX5aqC4mJg0AkPLmvvlXEdas3556gk2k qgaMsEvIrooQhgFM3M7P9FzkTxd2YEACMufo5FCNMh00HhP6zjXxMmwDeLIOt3jiueLT Yu9lCfLko3eN+3viE/7nYNe7N2QHjNY92YXAd04avgqgUFB/iLT0/AIJvNtd9PqWwlO4 3acOv6iSujIymNCpbCeIV7vw17pulTz/J4/VP1+G6MbDYsI8aVl96IIfSSSdSBtHcYxU Fdn746aHI6yb5toQrKjt/6rcntmx4ojALZ5fCg1gXc50hq3+OLTtoGD/b2OfsB+E1Hcj V6Hw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682508102; x=1685100102; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Zyn3pWh1I5zYmXKJZnDWojm/WjqJCfT4hRVyzg3c8zM=; b=ZKisdiHjI8tJ4YVDjhTp9CifvU8SsLipe/L+GaUdrXDLbGn+R5d/vyExAOsMCP01nE Hx52E/LGnQuocAoiXg432uzX/hcfshJpN3gq4MInvY9oXTu2xupuBR1ZXTKQp9+T8xbJ 1JeuJLOFv6xQkzzBBvlru9Ogcn6wcl2WTSJMQiiltvhYTmy2HiMdVQY2c+5OZHKzZW2W 3JDicq7URKX5qyzn4C/rH2w4+JSsXxhXksNtQ4koj8pGnnAmHeb7Uf7CfnNMMlR7SM6R rIibSs8T3AD+/OqhDYiOXOgO1MPkM+gd7KThFyZpHhC42kFmPU0RTXzFbTthoecgRgi4 MsRw== X-Gm-Message-State: AAQBX9dLTOFXM2VlPMrKz645miLJ97kQFWfSCnYky9zhk2L3Kn4sU+hp 7bsaFr7jJuN1hRqZH4GVM/cbgQ== X-Google-Smtp-Source: AKy350YhOl8LLm54rt/4YgIe3Ha5QTCl8gyTtf7aqKuYUiXyHktmWRGMYpRDOSjHD+nKNyCmwHspJg== X-Received: by 2002:a19:ae0d:0:b0:4ef:d4d7:a9f4 with SMTP id f13-20020a19ae0d000000b004efd4d7a9f4mr4140058lfc.19.1682508101728; Wed, 26 Apr 2023 04:21:41 -0700 (PDT) Received: from [127.0.1.1] ([85.235.12.238]) by smtp.gmail.com with ESMTPSA id u28-20020a056512041c00b004ec84d24818sm2453237lfk.282.2023.04.26.04.21.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Apr 2023 04:21:41 -0700 (PDT) From: Linus Walleij Date: Wed, 26 Apr 2023 13:21:38 +0200 Subject: [PATCH v2 1/2] dt-bindings: gpio: Add STMPE YAML DT schema MIME-Version: 1.0 Message-Id: <20230426-stmpe-dt-bindings-v2-1-2f85a1fffcda@linaro.org> References: <20230426-stmpe-dt-bindings-v2-0-2f85a1fffcda@linaro.org> In-Reply-To: <20230426-stmpe-dt-bindings-v2-0-2f85a1fffcda@linaro.org> To: Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , Maxime Coquelin , Alexandre Torgue , Dmitry Torokhov , Lee Jones , Philippe Schenker , Stefan Agner , Marek Vasut , Steffen Trumtrar Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, Linus Walleij X-Mailer: b4 0.12.1 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org This adds a schema for the STMPE GPIO that while it is used a lot in the kernel tree is anyway missing its bindings. Signed-off-by: Linus Walleij --- ChangeLog v1->v2: - New patch split off from the MFD patch. --- .../devicetree/bindings/gpio/st,stmpe-gpio.yaml | 60 ++++++++++++++++++++++ 1 file changed, 60 insertions(+) diff --git a/Documentation/devicetree/bindings/gpio/st,stmpe-gpio.yaml b/Documentation/devicetree/bindings/gpio/st,stmpe-gpio.yaml new file mode 100644 index 000000000000..6e991ebbdf77 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/st,stmpe-gpio.yaml @@ -0,0 +1,60 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/st,stmpe-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: STMicroelectonics Port Expander (STMPE) GPIO Block + +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. These bindings pertain to the + GPIO portions of these expanders. + +maintainers: + - Linus Walleij + +properties: + compatible: + const: st,stmpe-gpio + + "#gpio-cells": + const: 2 + + "#interrupt-cells": + const: 2 + + gpio-controller: true + + interrupt-controller: true + + st,norequest-mask: + description: A bitmask of GPIO lines that cannot be requested because for + for example not being connected to anything on the system + $ref: /schemas/types.yaml#/definitions/uint32 + +patternProperties: + "^.+-hog(-[0-9]+)?$": + type: object + + properties: + gpio-hog: true + gpios: true + input: true + output-high: true + output-low: true + line-name: true + + required: + - gpio-hog + - gpios + +additionalProperties: false + +required: + - compatible + - "#gpio-cells" + - "#interrupt-cells" + - gpio-controller + - interrupt-controller From patchwork Wed Apr 26 11:21:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linus Walleij X-Patchwork-Id: 1774052 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Reference the existing schema for the ADC, just define the other subnode schemas directly in the MFD schema. Add two examples so we have examples covering both the simple GPIO expander and the more complex with ADC and touchscreen. Some in-tree users do not follow the naming conventions for nodes so these DTS files need to be augmented to use proper node names like "adc", "pwm", "gpio", "keyboard-controller" etc before the bindings take effect on them. Signed-off-by: Linus Walleij Reviewed-by: Rob Herring Acked-by: Dmitry Torokhov --- ChangeLog v1->v2: - Split off the GPIO bindings to their own schema, as the old bindings didn't even have any GPIO bindings. Put the GPIO schema before this schema so we can use GPIO in the examples. - Drop nodename and pattern as STMPE is not a generic name. - Add maxItems to the resets. - Make wakeup-source just :true, as it is a generic property. - Move unevaluatedProperties for subnodes right before properties as requested. - Name devices "port-expander" in the examples. - Use lowercase hex in line init. --- .../devicetree/bindings/input/stmpe-keypad.txt | 41 --- .../bindings/input/touchscreen/stmpe.txt | 108 -------- .../devicetree/bindings/mfd/st,stmpe.yaml | 298 +++++++++++++++++++++ Documentation/devicetree/bindings/mfd/stmpe.txt | 42 --- 4 files changed, 298 insertions(+), 191 deletions(-) diff --git a/Documentation/devicetree/bindings/input/stmpe-keypad.txt b/Documentation/devicetree/bindings/input/stmpe-keypad.txt deleted file mode 100644 index 12bb771d66d4..000000000000 --- a/Documentation/devicetree/bindings/input/stmpe-keypad.txt +++ /dev/null @@ -1,41 +0,0 @@ -* STMPE Keypad - -Required properties: - - compatible : "st,stmpe-keypad" - - linux,keymap : See ./matrix-keymap.txt - -Optional properties: - - debounce-interval : Debouncing interval time in milliseconds - - st,scan-count : Scanning cycles elapsed before key data is updated - - st,no-autorepeat : If specified device will not autorepeat - - keypad,num-rows : See ./matrix-keymap.txt - - keypad,num-columns : See ./matrix-keymap.txt - -Example: - - stmpe_keypad { - compatible = "st,stmpe-keypad"; - - debounce-interval = <64>; - st,scan-count = <8>; - st,no-autorepeat; - - linux,keymap = <0x205006b - 0x4010074 - 0x3050072 - 0x1030004 - 0x502006a - 0x500000a - 0x5008b - 0x706001c - 0x405000b - 0x6070003 - 0x3040067 - 0x303006c - 0x60400e7 - 0x602009e - 0x4020073 - 0x5050002 - 0x4030069 - 0x3020008>; - }; diff --git a/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt b/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt deleted file mode 100644 index 238b51555c04..000000000000 --- a/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt +++ /dev/null @@ -1,108 +0,0 @@ -STMPE Touchscreen ----------------- - -Required properties: - - compatible: "st,stmpe-ts" - -Optional properties: -- st,ave-ctrl : Sample average control - 0 -> 1 sample - 1 -> 2 samples - 2 -> 4 samples - 3 -> 8 samples -- st,touch-det-delay : Touch detect interrupt delay (recommended is 3) - 0 -> 10 us - 1 -> 50 us - 2 -> 100 us - 3 -> 500 us - 4 -> 1 ms - 5 -> 5 ms - 6 -> 10 ms - 7 -> 50 ms -- st,settling : Panel driver settling time (recommended is 2) - 0 -> 10 us - 1 -> 100 us - 2 -> 500 us - 3 -> 1 ms - 4 -> 5 ms - 5 -> 10 ms - 6 -> 50 ms - 7 -> 100 ms -- st,fraction-z : Length of the fractional part in z (recommended is 7) - (fraction-z ([0..7]) = Count of the fractional part) -- st,i-drive : current limit value of the touchscreen drivers - 0 -> 20 mA (typical 35mA max) - 1 -> 50 mA (typical 80 mA max) - -Optional properties common with MFD (deprecated): - - st,sample-time : ADC conversion time in number of clock. - 0 -> 36 clocks - 1 -> 44 clocks - 2 -> 56 clocks - 3 -> 64 clocks - 4 -> 80 clocks (recommended) - 5 -> 96 clocks - 6 -> 124 clocks - - st,mod-12b : ADC Bit mode - 0 -> 10bit ADC - 1 -> 12bit ADC - - st,ref-sel : ADC reference source - 0 -> internal - 1 -> external - - st,adc-freq : ADC Clock speed - 0 -> 1.625 MHz - 1 -> 3.25 MHz - 2 || 3 -> 6.5 MHz - -Node should be child node of stmpe node to which it belongs. - -Note that common ADC settings of stmpe_touchscreen (child) will take precedence -over the settings done in MFD. - -Example: - -stmpe811@41 { - compatible = "st,stmpe811"; - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_touch_int>; - #address-cells = <1>; - #size-cells = <0>; - reg = <0x41>; - interrupts = <10 IRQ_TYPE_LEVEL_LOW>; - interrupt-parent = <&gpio4>; - interrupt-controller; - id = <0>; - blocks = <0x5>; - irq-trigger = <0x1>; - /* Common ADC settings */ - /* 3.25 MHz ADC clock speed */ - st,adc-freq = <1>; - /* 12-bit ADC */ - st,mod-12b = <1>; - /* internal ADC reference */ - st,ref-sel = <0>; - /* ADC converstion time: 80 clocks */ - st,sample-time = <4>; - - stmpe_touchscreen { - compatible = "st,stmpe-ts"; - reg = <0>; - /* 8 sample average control */ - st,ave-ctrl = <3>; - /* 5 ms touch detect interrupt delay */ - st,touch-det-delay = <5>; - /* 1 ms panel driver settling time */ - st,settling = <3>; - /* 7 length fractional part in z */ - st,fraction-z = <7>; - /* - * 50 mA typical 80 mA max touchscreen drivers - * current limit value - */ - st,i-drive = <1>; - }; - stmpe_adc { - compatible = "st,stmpe-adc"; - st,norequest-mask = <0x0F>; - }; -}; diff --git a/Documentation/devicetree/bindings/mfd/st,stmpe.yaml b/Documentation/devicetree/bindings/mfd/st,stmpe.yaml new file mode 100644 index 000000000000..dd24ae2d5fb4 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/st,stmpe.yaml @@ -0,0 +1,298 @@ +# 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 + +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 + + required: + - compatible + - "#pwm-cells" + + 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 + #include + #include + 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>; + }; + }; + }; +... diff --git a/Documentation/devicetree/bindings/mfd/stmpe.txt b/Documentation/devicetree/bindings/mfd/stmpe.txt deleted file mode 100644 index d4408a417193..000000000000 --- a/Documentation/devicetree/bindings/mfd/stmpe.txt +++ /dev/null @@ -1,42 +0,0 @@ -* ST Microelectronics STMPE Multi-Functional Device - -STMPE is an MFD device which may expose the following inbuilt devices: gpio, -keypad, touchscreen, adc, pwm, rotator. - -Required properties: - - compatible : "st,stmpe[610|801|811|1600|1601|2401|2403]" - - reg : I2C/SPI address of the device - -Optional properties: - - interrupts : The interrupt outputs from the controller - - interrupt-controller : Marks the device node as an interrupt controller - - wakeup-source : Marks the input device as wakable - - st,autosleep-timeout : Valid entries (ms); 4, 16, 32, 64, 128, 256, 512 and 1024 - - irq-gpio : If present, which GPIO to use for event IRQ - -Optional properties for devices with touch and ADC (STMPE811|STMPE610): - - st,sample-time : ADC conversion time in number of clock. - 0 -> 36 clocks 4 -> 80 clocks (recommended) - 1 -> 44 clocks 5 -> 96 clocks - 2 -> 56 clocks 6 -> 124 clocks - 3 -> 64 clocks - - st,mod-12b : ADC Bit mode - 0 -> 10bit ADC 1 -> 12bit ADC - - st,ref-sel : ADC reference source - 0 -> internal 1 -> external - - st,adc-freq : ADC Clock speed - 0 -> 1.625 MHz 2 || 3 -> 6.5 MHz - 1 -> 3.25 MHz - -Example: - - stmpe1601: stmpe1601@40 { - compatible = "st,stmpe1601"; - reg = <0x40>; - interrupts = <26 0x4>; - interrupt-parent = <&gpio6>; - interrupt-controller; - - wakeup-source; - st,autosleep-timeout = <1024>; - };