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 X-Spam-Level: X-Spam-Status: No, score=-14.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B08C8C07E96 for ; Tue, 13 Jul 2021 22:14:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 93DC86101B for ; Tue, 13 Jul 2021 22:14:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236545AbhGMWR1 (ORCPT ); Tue, 13 Jul 2021 18:17:27 -0400 Received: from mail-io1-f47.google.com ([209.85.166.47]:40868 "EHLO mail-io1-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235973AbhGMWR0 (ORCPT ); Tue, 13 Jul 2021 18:17:26 -0400 Received: by mail-io1-f47.google.com with SMTP id l5so29153647iok.7; Tue, 13 Jul 2021 15:14:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=RpU6tfEd13P9yTBdvZdhGhlLt5ObHps/ZkeBp0WE0QA=; b=WzXeyk5idb10YtXdVHcIc1VFDKztbKiJGOynvqU1W1eoZTo/butXACmF284sv4DI48 eEwfKgpEfBS6I0v3cqn1jJLULunHHjce+a7Ofk3hT/K0zjAi0xmvT051NFq0KchJ4CIA lM3Zf2pKPLalVxwFxVTXBL5LiYTzdJI5+PbbGOa7xhqYUWlmfFLojkG+pSYnYEoTMx/g pWYcyKbDmYhJ6Lum09iTLX3Kv0rsxUvy29HZNqcuBXGU58HLPBk2M5e9JA16dgdVEXA+ AF4lfz91XM/IVhV8piqR0CLG6k689wHgW/rVDED5q7FKbfV7CtgdIDdhZSiN5LxBhhpb hRNw== X-Gm-Message-State: AOAM532LCx6VxbzZ9giri8b1OwtLA2zZvoB+2eP5feqOdlpXVd4H6DXN Lac1A+UficgaxJp6HZ8vYw== X-Google-Smtp-Source: ABdhPJzuVTo5lRZxqxJXVtSulqUkfqAXPBFkEEpwR+JcZEG4LgbqZ7v6QYhqAItUH3hRjVsS4lroTA== X-Received: by 2002:a05:6638:3882:: with SMTP id b2mr6002780jav.15.1626214475237; Tue, 13 Jul 2021 15:14:35 -0700 (PDT) Received: from robh.at.kernel.org ([64.188.179.248]) by smtp.gmail.com with ESMTPSA id z22sm73610iog.13.2021.07.13.15.14.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Jul 2021 15:14:34 -0700 (PDT) Received: (nullmailer pid 941748 invoked by uid 1000); Tue, 13 Jul 2021 22:14:31 -0000 Date: Tue, 13 Jul 2021 16:14:31 -0600 From: Rob Herring To: Billy Tsai Cc: lee.jones@linaro.org, joel@jms.id.au, andrew@aj.id.au, thierry.reding@gmail.com, u.kleine-koenig@pengutronix.de, p.zabel@pengutronix.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org, BMC-SW@aspeedtech.com Subject: Re: [v9 1/2] dt-bindings: Add bindings for aspeed pwm-tach. Message-ID: <20210713221431.GA936073@robh.at.kernel.org> References: <20210709065217.6153-1-billy_tsai@aspeedtech.com> <20210709065217.6153-2-billy_tsai@aspeedtech.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210709065217.6153-2-billy_tsai@aspeedtech.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 09, 2021 at 02:52:16PM +0800, Billy Tsai wrote: > This patch adds device binding for aspeed pwm-tach device which is a > multi-function device include pwm and tach function and pwm/tach device > bindings which should be the child-node of pwm-tach device. I'll say it again, the fan control h/w needs some common bindings for describing fans and fan connections to pwm and tach. I'm not going to sign off on more fan bindings just doing their own thing. > > Signed-off-by: Billy Tsai > --- > .../bindings/hwmon/aspeed,ast2600-tach.yaml | 69 +++++++++++++++ > .../bindings/mfd/aspeed,ast2600-pwm-tach.yaml | 87 +++++++++++++++++++ > .../bindings/pwm/aspeed,ast2600-pwm.yaml | 64 ++++++++++++++ > 3 files changed, 220 insertions(+) > create mode 100644 Documentation/devicetree/bindings/hwmon/aspeed,ast2600-tach.yaml > create mode 100644 Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml > create mode 100644 Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml > > diff --git a/Documentation/devicetree/bindings/hwmon/aspeed,ast2600-tach.yaml b/Documentation/devicetree/bindings/hwmon/aspeed,ast2600-tach.yaml > new file mode 100644 > index 000000000000..a08471f96a61 > --- /dev/null > +++ b/Documentation/devicetree/bindings/hwmon/aspeed,ast2600-tach.yaml > @@ -0,0 +1,69 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +# Copyright (C) 2021 Aspeed, Inc. > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/hwmon/aspeed,ast2600-tach.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Aspeed Ast2600 Tach controller > + > +maintainers: > + - Billy Tsai > + > +description: | > + The Aspeed Tach controller can support upto 16 fan input. > + This module is part of the ast2600-pwm-tach multi-function device. For more > + details see ../mfd/aspeed,ast2600-pwm-tach.yaml. > + > +properties: > + compatible: > + enum: > + - aspeed,ast2600-tach > + > + "#address-cells": > + const: 1 > + > + "#size-cells": > + const: 0 > + > + pinctrl-0: true > + > + pinctrl-names: > + const: default > + > +required: > + - compatible > + - "#address-cells" > + - "#size-cells" > + > +additionalProperties: > + type: object > + properties: > + reg: > + description: > + The tach channel used for this fan. > + maxItems: 1 > + > + aspeed,min-rpm: > + description: > + define the minimal revolutions per minute of the measure fan > + used to calculate the sample period of tach > + default: 1000 > + > + aspeed,pulse-pr: > + description: > + Value specifying the number of pulses per revolution of the > + monitored FAN. > + default: 2 > + > + aspeed,tach-div: > + description: > + define the tachometer clock divider as an integer. Formula of > + tach clock = clock source / (2^tach-div)^2 > + minimum: 0 > + maximum: 15 > + # The value that should be used if the property is not present > + default: 5 > + > + required: > + - reg > diff --git a/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml b/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml > new file mode 100644 > index 000000000000..ab49aff1928a > --- /dev/null > +++ b/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml > @@ -0,0 +1,87 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +# Copyright (C) 2021 Aspeed, Inc. > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/mfd/aspeed,ast2600-pwm-tach.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: PWM Tach controller Device Tree Bindings > + > +description: | > + The PWM Tach controller is represented as a multi-function device which > + includes: > + PWM > + Tach > + > +maintainers: > + - Billy Tsai > + > +properties: > + compatible: > + items: > + - enum: > + - aspeed,ast2600-pwm-tach > + - const: syscon > + - const: simple-mfd > + > + reg: > + maxItems: 1 > + > + clocks: > + maxItems: 1 > + > + resets: > + maxItems: 1 > + > +required: > + - compatible > + - reg > + - clocks > + - resets > + > +patternProperties: > + "^pwm(@[0-9a-f]+)?$": > + $ref: ../pwm/aspeed,ast2600-pwm.yaml > + > + "^tach(@[0-9a-f]+)?$": > + $ref: ../hwmon/aspeed,ast2600-tach.yaml > + > +additionalProperties: false > + > +examples: > + - | > + #include > + pwm_tach: pwm_tach@1e610000 { > + compatible = "aspeed,ast2600-pwm-tach", "syscon", "simple-mfd"; > + reg = <0x1e610000 0x100>; > + clocks = <&syscon ASPEED_CLK_AHB>; > + resets = <&syscon ASPEED_RESET_PWM>; > + > + pwm: pwm { > + compatible = "aspeed,ast2600-pwm"; > + #address-cells = <1>; > + #size-cells = <0>; > + #pwm-cells = <3>; > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_pwm0_default>; > + pwm-ch@0 { > + reg = <0>; > + aspeed,wdt-reload-enable; > + aspeed,wdt-reload-duty-point = <32>; > + }; > + }; > + > + tach: tach { > + compatible = "aspeed,ast2600-tach"; > + #address-cells = <1>; > + #size-cells = <0>; > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_tach0_default>; > + tach-ch@0 { > + reg = <0>; > + aspeed,min-rpm = <1000>; > + aspeed,pulse-pr = <2>; > + aspeed,tach-div = <5>; > + }; > + }; > + }; > diff --git a/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml b/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml > new file mode 100644 > index 000000000000..f501f8a769df > --- /dev/null > +++ b/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml > @@ -0,0 +1,64 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +# Copyright (C) 2021 Aspeed, Inc. > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/pwm/aspeed,ast2600-pwm.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Aspeed Ast2600 PWM controller > + > +maintainers: > + - Billy Tsai > + > +description: | > + The Aspeed PWM controller can support upto 16 PWM outputs. > + This module is part of the ast2600-pwm-tach multi-function device. For more > + details see ../mfd/aspeed,ast2600-pwm-tach.yaml. > + > +properties: > + compatible: > + enum: > + - aspeed,ast2600-pwm > + > + "#pwm-cells": > + const: 3 > + > + "#address-cells": > + const: 1 > + > + "#size-cells": > + const: 0 > + > + pinctrl-0: true > + > + pinctrl-names: > + const: default > + > +required: > + - compatible > + - "#pwm-cells" > + - "#address-cells" > + - "#size-cells" > + > +additionalProperties: > + description: Set extend properties for each pwm channel. > + type: object > + properties: > + reg: > + description: > + The pwm channel index. > + maxItems: 1 > + > + aspeed,wdt-reload-enable: > + type: boolean > + description: > + Enable the function of wdt reset reload duty point. > + > + aspeed,wdt-reload-duty-point: > + description: > + Define the duty point after wdt reset, 0 = 100% > + minimum: 0 > + maximum: 255 > + > + required: > + - reg > -- > 2.25.1 > > 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 X-Spam-Level: X-Spam-Status: No, score=-14.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 455F2C07E95 for ; Tue, 13 Jul 2021 22:16:24 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 125BB6101B for ; Tue, 13 Jul 2021 22:16:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 125BB6101B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=GN6buLqrY2QI23R2pvjma4LCF4tzPx+zpmMtUJfPcIQ=; b=wDMm/XjTRzoyLK AU9o99L82xE72j67QDcBFNkj7xyeLxpNfxUTwYw4daSp4D1E0/tS8gl+9ySQK/KAEiuxAsAXINqnF ThaAJSBD73ucQxnbhNmRGxeSYJfL3Titdbp6WjLSPdbXQEiw/731s5I2NTOfE3xZ0+vWiZQ0WB/F2 yl0foVIEVDXps0zRU84lIDvMroFrv6mSUT/8MY2xgNpAkdBbodX+Z2FEyOyjJhZQNYv7oXEX9SyJs 99Qpfr0KtjWExlexUlZ8MTWH6O23pDhHmXjBzwfcWrpfWFH2z6wEQ5xSkGb7zsYPr9jK/d2nfWtW0 O1KQ+SyxlBrt/mjlWGHA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m3Qfo-00BRcL-Hn; Tue, 13 Jul 2021 22:14:40 +0000 Received: from mail-io1-f50.google.com ([209.85.166.50]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m3Qfk-00BRbb-2r for linux-arm-kernel@lists.infradead.org; Tue, 13 Jul 2021 22:14:38 +0000 Received: by mail-io1-f50.google.com with SMTP id u7so29141511ion.3 for ; Tue, 13 Jul 2021 15:14:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=RpU6tfEd13P9yTBdvZdhGhlLt5ObHps/ZkeBp0WE0QA=; b=FvAZCLapnjUKzLHS7Xo5YjtFz1294UUct+D2rBrb4MA4aFWW1MYEmH/9QUrRUAcjSn BXNBweon4X93GX58+damJ4vJo1c7vpZdPB1GLphlVgNUk8iYnW/DjweMsR0jbxDdoIwU AGloXNYAszhscibi9vqXOZWgUlepHgkl0Mgzp89e6015g//rc2MLs9X6zS5JJT4hmZuf 2FOWxOSrew34HsxEUMUGE13c77TkuirD7PHiv0+tShDL+jX8/shYxmKJSwt8fjvdsWBs pjGflFVA2i6TJG5gcQx+00hAJBc/FI8rYnpfNoXBbnMefJwJPvlMFMbolXXFGFRIGaBN Zyag== X-Gm-Message-State: AOAM531LHnO4fkhiJNHD2yQfjSP79c9X+HpYtmosYr6kItydh9zqXs+i fywi0hTt3O//VkhWWTe1cw== X-Google-Smtp-Source: ABdhPJzuVTo5lRZxqxJXVtSulqUkfqAXPBFkEEpwR+JcZEG4LgbqZ7v6QYhqAItUH3hRjVsS4lroTA== X-Received: by 2002:a05:6638:3882:: with SMTP id b2mr6002780jav.15.1626214475237; Tue, 13 Jul 2021 15:14:35 -0700 (PDT) Received: from robh.at.kernel.org ([64.188.179.248]) by smtp.gmail.com with ESMTPSA id z22sm73610iog.13.2021.07.13.15.14.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Jul 2021 15:14:34 -0700 (PDT) Received: (nullmailer pid 941748 invoked by uid 1000); Tue, 13 Jul 2021 22:14:31 -0000 Date: Tue, 13 Jul 2021 16:14:31 -0600 From: Rob Herring To: Billy Tsai Cc: lee.jones@linaro.org, joel@jms.id.au, andrew@aj.id.au, thierry.reding@gmail.com, u.kleine-koenig@pengutronix.de, p.zabel@pengutronix.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org, BMC-SW@aspeedtech.com Subject: Re: [v9 1/2] dt-bindings: Add bindings for aspeed pwm-tach. Message-ID: <20210713221431.GA936073@robh.at.kernel.org> References: <20210709065217.6153-1-billy_tsai@aspeedtech.com> <20210709065217.6153-2-billy_tsai@aspeedtech.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210709065217.6153-2-billy_tsai@aspeedtech.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210713_151436_184168_0768FBA2 X-CRM114-Status: GOOD ( 25.10 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Jul 09, 2021 at 02:52:16PM +0800, Billy Tsai wrote: > This patch adds device binding for aspeed pwm-tach device which is a > multi-function device include pwm and tach function and pwm/tach device > bindings which should be the child-node of pwm-tach device. I'll say it again, the fan control h/w needs some common bindings for describing fans and fan connections to pwm and tach. I'm not going to sign off on more fan bindings just doing their own thing. > > Signed-off-by: Billy Tsai > --- > .../bindings/hwmon/aspeed,ast2600-tach.yaml | 69 +++++++++++++++ > .../bindings/mfd/aspeed,ast2600-pwm-tach.yaml | 87 +++++++++++++++++++ > .../bindings/pwm/aspeed,ast2600-pwm.yaml | 64 ++++++++++++++ > 3 files changed, 220 insertions(+) > create mode 100644 Documentation/devicetree/bindings/hwmon/aspeed,ast2600-tach.yaml > create mode 100644 Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml > create mode 100644 Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml > > diff --git a/Documentation/devicetree/bindings/hwmon/aspeed,ast2600-tach.yaml b/Documentation/devicetree/bindings/hwmon/aspeed,ast2600-tach.yaml > new file mode 100644 > index 000000000000..a08471f96a61 > --- /dev/null > +++ b/Documentation/devicetree/bindings/hwmon/aspeed,ast2600-tach.yaml > @@ -0,0 +1,69 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +# Copyright (C) 2021 Aspeed, Inc. > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/hwmon/aspeed,ast2600-tach.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Aspeed Ast2600 Tach controller > + > +maintainers: > + - Billy Tsai > + > +description: | > + The Aspeed Tach controller can support upto 16 fan input. > + This module is part of the ast2600-pwm-tach multi-function device. For more > + details see ../mfd/aspeed,ast2600-pwm-tach.yaml. > + > +properties: > + compatible: > + enum: > + - aspeed,ast2600-tach > + > + "#address-cells": > + const: 1 > + > + "#size-cells": > + const: 0 > + > + pinctrl-0: true > + > + pinctrl-names: > + const: default > + > +required: > + - compatible > + - "#address-cells" > + - "#size-cells" > + > +additionalProperties: > + type: object > + properties: > + reg: > + description: > + The tach channel used for this fan. > + maxItems: 1 > + > + aspeed,min-rpm: > + description: > + define the minimal revolutions per minute of the measure fan > + used to calculate the sample period of tach > + default: 1000 > + > + aspeed,pulse-pr: > + description: > + Value specifying the number of pulses per revolution of the > + monitored FAN. > + default: 2 > + > + aspeed,tach-div: > + description: > + define the tachometer clock divider as an integer. Formula of > + tach clock = clock source / (2^tach-div)^2 > + minimum: 0 > + maximum: 15 > + # The value that should be used if the property is not present > + default: 5 > + > + required: > + - reg > diff --git a/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml b/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml > new file mode 100644 > index 000000000000..ab49aff1928a > --- /dev/null > +++ b/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml > @@ -0,0 +1,87 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +# Copyright (C) 2021 Aspeed, Inc. > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/mfd/aspeed,ast2600-pwm-tach.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: PWM Tach controller Device Tree Bindings > + > +description: | > + The PWM Tach controller is represented as a multi-function device which > + includes: > + PWM > + Tach > + > +maintainers: > + - Billy Tsai > + > +properties: > + compatible: > + items: > + - enum: > + - aspeed,ast2600-pwm-tach > + - const: syscon > + - const: simple-mfd > + > + reg: > + maxItems: 1 > + > + clocks: > + maxItems: 1 > + > + resets: > + maxItems: 1 > + > +required: > + - compatible > + - reg > + - clocks > + - resets > + > +patternProperties: > + "^pwm(@[0-9a-f]+)?$": > + $ref: ../pwm/aspeed,ast2600-pwm.yaml > + > + "^tach(@[0-9a-f]+)?$": > + $ref: ../hwmon/aspeed,ast2600-tach.yaml > + > +additionalProperties: false > + > +examples: > + - | > + #include > + pwm_tach: pwm_tach@1e610000 { > + compatible = "aspeed,ast2600-pwm-tach", "syscon", "simple-mfd"; > + reg = <0x1e610000 0x100>; > + clocks = <&syscon ASPEED_CLK_AHB>; > + resets = <&syscon ASPEED_RESET_PWM>; > + > + pwm: pwm { > + compatible = "aspeed,ast2600-pwm"; > + #address-cells = <1>; > + #size-cells = <0>; > + #pwm-cells = <3>; > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_pwm0_default>; > + pwm-ch@0 { > + reg = <0>; > + aspeed,wdt-reload-enable; > + aspeed,wdt-reload-duty-point = <32>; > + }; > + }; > + > + tach: tach { > + compatible = "aspeed,ast2600-tach"; > + #address-cells = <1>; > + #size-cells = <0>; > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_tach0_default>; > + tach-ch@0 { > + reg = <0>; > + aspeed,min-rpm = <1000>; > + aspeed,pulse-pr = <2>; > + aspeed,tach-div = <5>; > + }; > + }; > + }; > diff --git a/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml b/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml > new file mode 100644 > index 000000000000..f501f8a769df > --- /dev/null > +++ b/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml > @@ -0,0 +1,64 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +# Copyright (C) 2021 Aspeed, Inc. > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/pwm/aspeed,ast2600-pwm.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Aspeed Ast2600 PWM controller > + > +maintainers: > + - Billy Tsai > + > +description: | > + The Aspeed PWM controller can support upto 16 PWM outputs. > + This module is part of the ast2600-pwm-tach multi-function device. For more > + details see ../mfd/aspeed,ast2600-pwm-tach.yaml. > + > +properties: > + compatible: > + enum: > + - aspeed,ast2600-pwm > + > + "#pwm-cells": > + const: 3 > + > + "#address-cells": > + const: 1 > + > + "#size-cells": > + const: 0 > + > + pinctrl-0: true > + > + pinctrl-names: > + const: default > + > +required: > + - compatible > + - "#pwm-cells" > + - "#address-cells" > + - "#size-cells" > + > +additionalProperties: > + description: Set extend properties for each pwm channel. > + type: object > + properties: > + reg: > + description: > + The pwm channel index. > + maxItems: 1 > + > + aspeed,wdt-reload-enable: > + type: boolean > + description: > + Enable the function of wdt reset reload duty point. > + > + aspeed,wdt-reload-duty-point: > + description: > + Define the duty point after wdt reset, 0 = 100% > + minimum: 0 > + maximum: 255 > + > + required: > + - reg > -- > 2.25.1 > > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel