From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH v6 1/2] pwm: sifive: Add DT documentation for SiFive PWM Controller Date: Wed, 13 Feb 2019 14:37:52 -0600 Message-ID: <20190213203752.GA18326@bogus> References: <1550049978-20705-1-git-send-email-yash.shah@sifive.com> <1550049978-20705-2-git-send-email-yash.shah@sifive.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1550049978-20705-2-git-send-email-yash.shah@sifive.com> Sender: linux-kernel-owner@vger.kernel.org To: Yash Shah Cc: palmer@sifive.com, linux-pwm@vger.kernel.org, linux-riscv@lists.infradead.org, thierry.reding@gmail.com, mark.rutland@arm.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, sachin.ghadi@sifive.com, paul.walmsley@sifive.com List-Id: linux-pwm@vger.kernel.org On Wed, Feb 13, 2019 at 02:56:17PM +0530, Yash Shah wrote: > DT documentation for PWM controller added. > > Signed-off-by: Wesley W. Terpstra > [Atish: Compatible string update] > Signed-off-by: Atish Patra > Signed-off-by: Yash Shah > --- > .../devicetree/bindings/pwm/pwm-sifive.txt | 30 ++++++++++++++++++++++ > 1 file changed, 30 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pwm/pwm-sifive.txt > > diff --git a/Documentation/devicetree/bindings/pwm/pwm-sifive.txt b/Documentation/devicetree/bindings/pwm/pwm-sifive.txt > new file mode 100644 > index 0000000..3b9c64c > --- /dev/null > +++ b/Documentation/devicetree/bindings/pwm/pwm-sifive.txt > @@ -0,0 +1,30 @@ > +SiFive PWM controller > + > +Unlike most other PWM controllers, the SiFive PWM controller currently only > +supports one period for all channels in the PWM. All PWMs need to run at > +the same period. The period also has significant restrictions on the values > +it can achieve, which the driver rounds to the nearest achievable period. > +PWM RTL that corresponds to the IP block version numbers can be found > +here: > + > +https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices/pwm > + > +Required properties: > +- compatible: Should be "sifive,$socname-pwm" and "sifive,pwmX". > + Please refer to sifive-blocks-ip-versioning.txt for details. Please specify what soc and IP version are used. Is sifive,pwm10 valid? > +- reg: physical base address and length of the controller's registers > +- clocks: Should contain a clock identifier for the PWM's parent clock. > +- #pwm-cells: Should be 3. See pwm.txt in this directory > + for a description of the cell format. > +- interrupts: one interrupt per PWM channel > + > +Examples: > + > +pwm: pwm@10020000 { > + compatible = "sifive,fu540-c000-pwm", "sifive,pwm0"; > + reg = <0x0 0x10020000 0x0 0x1000>; > + clocks = <&tlclk>; > + interrupt-parent = <&plic>; > + interrupts = <42 43 44 45>; > + #pwm-cells = <3>; > +}; > -- > 1.9.1 > 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=-13.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_MUTT 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 D4406C282D7 for ; Wed, 13 Feb 2019 20:37:59 +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 A50BC21872 for ; Wed, 13 Feb 2019 20:37:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="eXT8A9I7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A50BC21872 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-riscv-bounces+infradead-linux-riscv=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.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject: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=M2PPwHKn6nbcMEpwj8xZ5VonSrjDKH6QVi7hw9HTbrE=; b=eXT8A9I7186+NL RHt2SidJcYizMY+eJEXCbKsjFFNGst0Ii2hGXJsIvvwJzy03f7//lE70nDqdyv7jml5LHNeI5ykBM AON+DBww0REpRnd91wJF2Cav/udCyaJqKFkyLlxOyMnqPhw3328Ym85U7hwFBPDWFtb0Z5Hf7gpPD JH0r9VbefetPozPENchmrES+081smTeJ8QMgb2rvDsaf7me/IKZeP6zJPzXuYlgDdGKm9of8B4658 ftvUmiC976R3qLLvV1OsVFfJ8gv0TThIBBy3b8/oRq+XeAeyVXTLgpROA9bbMbwoGuOQtl2k214k7 ipuRZT0gOhE+0a7dGKrQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gu1I4-0004mR-Ne; Wed, 13 Feb 2019 20:37:56 +0000 Received: from mail-ot1-f66.google.com ([209.85.210.66]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gu1I1-0004k9-PG for linux-riscv@lists.infradead.org; Wed, 13 Feb 2019 20:37:55 +0000 Received: by mail-ot1-f66.google.com with SMTP id z19so6694650otm.2 for ; Wed, 13 Feb 2019 12:37:53 -0800 (PST) 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:user-agent; bh=3voqcrjL3lddC/ozmniVT3xEKHp7odJOLdH6cCVc9Zg=; b=bLnmqeuRX9DSZKz1wW/GD7C8+R0HduNfhpbdr1LCzu3vzHRwS3UD7rJfwqMZXmLntz CxWQy2z42/DfSHo386aIS+aBWVeWYVTBxHoVOwLZX/nDaEfpX54/9/bLKvnGSLPhpb+B rkeEWiAVlZ9vZY3l41tQNoysVbWi2df9O+q3MvNiMHyGUKyxQrxvYdInbJgdPk/Vrf+Y R26U0H13uhBw43xfHJXLFqKjiOtI6i+e0566kZX91uRtuVGU4O966RWyG3iSyv+nc+hG fAaWUdqHAPScO7ZxMLEetXbXoxj14jaxZbxGCqlnF+4Fw3E39Sa1ikOIE7HWYJyE0UtY YJuQ== X-Gm-Message-State: AHQUAuZgJgzfpkLI7f3mldfM/Zw2YGolcgDttMDK13TqzxOgC2PLLjNu ObXKa9dHlPvpi3bmAQsyJA== X-Google-Smtp-Source: AHgI3IbjNfHeTqSx3HupP3ww1rN82H76GaY3sbAyX1kKWLiOrdJcRlW9FD+RN4RDGZUt+dvIqM+puA== X-Received: by 2002:aca:e5c9:: with SMTP id c192mr30475oih.118.1550090272993; Wed, 13 Feb 2019 12:37:52 -0800 (PST) Received: from localhost (24-155-109-49.dyn.grandenetworks.net. [24.155.109.49]) by smtp.gmail.com with ESMTPSA id r203sm136372oih.11.2019.02.13.12.37.52 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 13 Feb 2019 12:37:52 -0800 (PST) Date: Wed, 13 Feb 2019 14:37:52 -0600 From: Rob Herring To: Yash Shah Subject: Re: [PATCH v6 1/2] pwm: sifive: Add DT documentation for SiFive PWM Controller Message-ID: <20190213203752.GA18326@bogus> References: <1550049978-20705-1-git-send-email-yash.shah@sifive.com> <1550049978-20705-2-git-send-email-yash.shah@sifive.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1550049978-20705-2-git-send-email-yash.shah@sifive.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190213_123753_815872_D220992A X-CRM114-Status: GOOD ( 17.18 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, palmer@sifive.com, linux-kernel@vger.kernel.org, sachin.ghadi@sifive.com, thierry.reding@gmail.com, paul.walmsley@sifive.com, linux-riscv@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org On Wed, Feb 13, 2019 at 02:56:17PM +0530, Yash Shah wrote: > DT documentation for PWM controller added. > > Signed-off-by: Wesley W. Terpstra > [Atish: Compatible string update] > Signed-off-by: Atish Patra > Signed-off-by: Yash Shah > --- > .../devicetree/bindings/pwm/pwm-sifive.txt | 30 ++++++++++++++++++++++ > 1 file changed, 30 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pwm/pwm-sifive.txt > > diff --git a/Documentation/devicetree/bindings/pwm/pwm-sifive.txt b/Documentation/devicetree/bindings/pwm/pwm-sifive.txt > new file mode 100644 > index 0000000..3b9c64c > --- /dev/null > +++ b/Documentation/devicetree/bindings/pwm/pwm-sifive.txt > @@ -0,0 +1,30 @@ > +SiFive PWM controller > + > +Unlike most other PWM controllers, the SiFive PWM controller currently only > +supports one period for all channels in the PWM. All PWMs need to run at > +the same period. The period also has significant restrictions on the values > +it can achieve, which the driver rounds to the nearest achievable period. > +PWM RTL that corresponds to the IP block version numbers can be found > +here: > + > +https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices/pwm > + > +Required properties: > +- compatible: Should be "sifive,$socname-pwm" and "sifive,pwmX". > + Please refer to sifive-blocks-ip-versioning.txt for details. Please specify what soc and IP version are used. Is sifive,pwm10 valid? > +- reg: physical base address and length of the controller's registers > +- clocks: Should contain a clock identifier for the PWM's parent clock. > +- #pwm-cells: Should be 3. See pwm.txt in this directory > + for a description of the cell format. > +- interrupts: one interrupt per PWM channel > + > +Examples: > + > +pwm: pwm@10020000 { > + compatible = "sifive,fu540-c000-pwm", "sifive,pwm0"; > + reg = <0x0 0x10020000 0x0 0x1000>; > + clocks = <&tlclk>; > + interrupt-parent = <&plic>; > + interrupts = <42 43 44 45>; > + #pwm-cells = <3>; > +}; > -- > 1.9.1 > _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv