From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 83BB3C433FE for ; Thu, 17 Mar 2022 00:58:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354768AbiCQA7h (ORCPT ); Wed, 16 Mar 2022 20:59:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51528 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345483AbiCQA7e (ORCPT ); Wed, 16 Mar 2022 20:59:34 -0400 Received: from mail-pf1-x42c.google.com (mail-pf1-x42c.google.com [IPv6:2607:f8b0:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D987F13CCD for ; Wed, 16 Mar 2022 17:58:18 -0700 (PDT) Received: by mail-pf1-x42c.google.com with SMTP id l8so5569691pfu.1 for ; Wed, 16 Mar 2022 17:58:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=iVaSiMrGUBcuxr+BXheMhCpTwOTEdY3UKmynqOZB7GE=; b=laiMa1UGEj7YbxyVRZ7aUO9i2EcvkGLOGcVqw5do55ZZ0ighV06QEkme6Dd7iBf3nF qSL3a1C7XNtfO27iCLFd13f3TDzDZJC9+J7gM6ug1YOavfLB/h5sFsrmO/JLPkOXn7vM FkrYbi7f5hydijrpe6WfdHplPq9VFdm15W61Y= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=iVaSiMrGUBcuxr+BXheMhCpTwOTEdY3UKmynqOZB7GE=; b=Pmj3ggZ8lypqTLQQrg3tBS9DQg7bCrBP6v740p9PhA00v1olLvgtuhos/l2XuukaRm eW8YyJvHvnnevZMSUkBuSDMUguVYe4RlLzNmGZ6ekJ9UmjnRyvtyHe+XNMtOVVsybPwN tVkAVBZSt7AAhtDfU9944bmKYWpqBHvqm219ptZkI/p/vowynZaO/5GCc6+EPcFcBWuJ yF1Tu4rBv4Fl7KMNhPaoF1qP+m9XSCizXL7poOQcDsJUwGcZ+RyYzFQmUDJB70OOv9B7 shvRPCaM96qYT1uJAA1Yv7ueYkl5NUZCrtEPxnXmWqq6Zqu488l/LWdjOhQVwj+hob7E JiRA== X-Gm-Message-State: AOAM533u++quR+R/fNWhaDAwOh9eg5xkXJhagTtoC8loJyg4XBmWxQCm G/SrWF0SVeI/nsAGYfasNLPyzQ== X-Google-Smtp-Source: ABdhPJw5GSVzk93O9AbsNKLeH45njGoSIqITsaIK4AQ+v4ZD3t8POB/0cPylVtYlqcqNRymomj4wGw== X-Received: by 2002:a05:6a00:1146:b0:4c9:ede0:725a with SMTP id b6-20020a056a00114600b004c9ede0725amr2144828pfm.35.1647478698387; Wed, 16 Mar 2022 17:58:18 -0700 (PDT) Received: from smtp.gmail.com ([2620:15c:202:201:dec5:e3f8:cbd7:f5a7]) by smtp.gmail.com with ESMTPSA id l20-20020a056a00141400b004f65cedfb09sm4433445pfu.48.2022.03.16.17.58.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Mar 2022 17:58:18 -0700 (PDT) From: Stephen Boyd To: Benson Leung Cc: linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, Rob Herring , devicetree@vger.kernel.org, Guenter Roeck , Douglas Anderson , Craig Hesling , Tom Hughes , Alexandru M Stan , Tzung-Bi Shih Subject: [PATCH v2 1/3] dt-bindings: chrome: Add ChromeOS fingerprint binding Date: Wed, 16 Mar 2022 17:58:12 -0700 Message-Id: <20220317005814.2496302-2-swboyd@chromium.org> X-Mailer: git-send-email 2.35.1.723.g4982287a31-goog In-Reply-To: <20220317005814.2496302-1-swboyd@chromium.org> References: <20220317005814.2496302-1-swboyd@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a binding to describe the fingerprint processor found on Chromebooks with a fingerprint sensor. Cc: Rob Herring Cc: Cc: Guenter Roeck Cc: Douglas Anderson Cc: Craig Hesling Cc: Tom Hughes Cc: Alexandru M Stan Cc: Tzung-Bi Shih Signed-off-by: Stephen Boyd --- .../bindings/chrome/google,cros-ec-fp.yaml | 85 +++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 Documentation/devicetree/bindings/chrome/google,cros-ec-fp.yaml diff --git a/Documentation/devicetree/bindings/chrome/google,cros-ec-fp.yaml b/Documentation/devicetree/bindings/chrome/google,cros-ec-fp.yaml new file mode 100644 index 000000000000..ba4212e6b583 --- /dev/null +++ b/Documentation/devicetree/bindings/chrome/google,cros-ec-fp.yaml @@ -0,0 +1,85 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/chrome/google,cros-ec-fp.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ChromeOS Embedded Fingerprint Controller + +description: + Google's ChromeOS embedded fingerprint controller is a device which + implements fingerprint functionality such as unlocking a Chromebook + without typing a password. + +maintainers: + - Tom Hughes + +properties: + compatible: + const: google,cros-ec-fp + + reg: + maxItems: 1 + + spi-max-frequency: + maximum: 3000000 + + interrupts: + maxItems: 1 + + reset-gpios: true + boot0-gpios: + maxItems: 1 + description: Assert for bootloader mode. + + vdd-supply: true + + google,cros-ec-spi-pre-delay: + description: + This property specifies the delay in usecs between the + assertion of the CS and the first clock pulse. + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + - default: 0 + - minimum: 0 + + google,cros-ec-spi-msg-delay: + description: + This property specifies the delay in usecs between messages. + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + - default: 0 + - minimum: 0 + +required: + - compatible + - reg + - interrupts + - reset-gpios + - boot0-gpios + - vdd-supply + - spi-max-frequency + +additionalProperties: false + +examples: + - | + #include + #include + spi { + #address-cells = <0x1>; + #size-cells = <0x0>; + ec@0 { + compatible = "google,cros-ec-fp"; + reg = <0>; + interrupt-parent = <&gpio_controller>; + interrupts = <4 IRQ_TYPE_LEVEL_LOW>; + spi-max-frequency = <3000000>; + google,cros-ec-spi-msg-delay = <37>; + google,cros-ec-spi-pre-delay = <5>; + reset-gpios = <&gpio_controller 5 GPIO_ACTIVE_LOW>; + boot0-gpios = <&gpio_controller 10 GPIO_ACTIVE_HIGH>; + vdd-supply = <&pp3300_fp_mcu>; + }; + }; +... -- https://chromeos.dev