From patchwork Wed Aug 21 03:07:42 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiubo Li X-Patchwork-Id: 2847408 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 4FEE09F271 for ; Wed, 21 Aug 2013 03:13:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6A0A02045B for ; Wed, 21 Aug 2013 03:13:19 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5E43D2046B for ; Wed, 21 Aug 2013 03:13:18 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VByq9-0006L2-DX; Wed, 21 Aug 2013 03:12:10 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VBypn-0005xz-LS; Wed, 21 Aug 2013 03:11:47 +0000 Received: from mail-db9lp0248.outbound.messaging.microsoft.com ([213.199.154.248] helo=db9outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VBypG-0005tf-Tc for linux-arm-kernel@lists.infradead.org; Wed, 21 Aug 2013 03:11:16 +0000 Received: from mail167-db9-R.bigfish.com (10.174.16.250) by DB9EHSOBE001.bigfish.com (10.174.14.64) with Microsoft SMTP Server id 14.1.225.22; Wed, 21 Aug 2013 03:10:52 +0000 Received: from mail167-db9 (localhost [127.0.0.1]) by mail167-db9-R.bigfish.com (Postfix) with ESMTP id 2195D1001E9; Wed, 21 Aug 2013 03:10:52 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zzzz1f42h208ch1ee6h1de0h1fdah2073h1202h1e76h1d1ah1d2ah1fc6hzz1de098h8275bh1de097hz2dh2a8h839he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e23h1fe8h1ff5h1155h) Received: from mail167-db9 (localhost.localdomain [127.0.0.1]) by mail167-db9 (MessageSwitch) id 1377054650245396_31443; Wed, 21 Aug 2013 03:10:50 +0000 (UTC) Received: from DB9EHSMHS017.bigfish.com (unknown [10.174.16.230]) by mail167-db9.bigfish.com (Postfix) with ESMTP id 2B4033C0059; Wed, 21 Aug 2013 03:10:50 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by DB9EHSMHS017.bigfish.com (10.174.14.27) with Microsoft SMTP Server (TLS) id 14.16.227.3; Wed, 21 Aug 2013 03:10:49 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-003.039d.mgd.msft.net (10.84.1.16) with Microsoft SMTP Server (TLS) id 14.3.146.2; Wed, 21 Aug 2013 03:10:48 +0000 Received: from rock.am.freescale.net (rock.ap.freescale.net [10.193.20.106]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id r7L3AIvi026822; Tue, 20 Aug 2013 20:10:43 -0700 From: Xiubo Li To: , Subject: [PATCH 4/4] Documentation: Add device tree bindings for Freescale FTM PWM Date: Wed, 21 Aug 2013 11:07:42 +0800 Message-ID: <1377054462-6283-5-git-send-email-Li.Xiubo@freescale.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1377054462-6283-1-git-send-email-Li.Xiubo@freescale.com> References: <1377054462-6283-1-git-send-email-Li.Xiubo@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130820_231115_225998_24481158 X-CRM114-Status: UNSURE ( 9.84 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.9 (-) Cc: mark.rutland@arm.com, linux-pwm@vger.kernel.org, linux@arm.linux.org.uk, ian.campbell@citrix.com, pawel.moll@arm.com, swarren@wwwdotorg.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, rob.herring@calxeda.com, devicetree@vger.kernel.org, rob@landley.net, grant.likely@linaro.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-7.0 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Xiubo Li --- .../devicetree/bindings/pwm/fsl-ftm-pwm.txt | 52 ++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 Documentation/devicetree/bindings/pwm/fsl-ftm-pwm.txt diff --git a/Documentation/devicetree/bindings/pwm/fsl-ftm-pwm.txt b/Documentation/devicetree/bindings/pwm/fsl-ftm-pwm.txt new file mode 100644 index 0000000..698965b --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/fsl-ftm-pwm.txt @@ -0,0 +1,52 @@ +Freescale FTM PWM controller + +Required properties: +- compatible: should be "fsl,vf610-ftm-pwm" +- reg: physical base address and length of the controller's registers +- #pwm-cells: Should be 3. Number of cells being used to specify PWM property. + First cell specifies the per-chip channel index of the PWM to use, the + second cell is the period in nanoseconds and bit 0 in the third cell is + used to encode the polarity of PWM output. Set bit 0 of the third in PWM + specifier to 1 for inverse polarity & set to 0 for normal polarity. +- fsl,pwm-clk-ps: the ftm0 pwm clock's prescaler, divide-by 2^n(n = 0 ~ 7). +- fsl,pwm-cpwm: Center-Aligned PWM (CPWM) mode. +- fsl,pwm-number: the number of PWM devices, and is must equal to the number + of "fsl,pwm-channels". +- fsl,pwm-channels: the channels' order which is be used for pwm in ftm0 + module, and they must be one or some of 0 ~ 7, because the ftm0 only has + 8 channels can be used. +- for very channel, the revlatived the pinctrl should be at least two state + {"enN", "dsN"}, which "en" means "enable", "ds" means "disable" and "N" + means the order of the channel. + +Example: + +pwm0: pwm@40038000 { + compatible = "fsl,vf610-ftm-pwm"; + reg = <0x40038000 0x1000>; + #pwm-cells = <3>; + pinctrl-names = "en0", "ds0", "en3", "ds3"; + pinctrl-0 = <&pinctrl_pwm0_ch0_en>; + pinctrl-1 = <&pinctrl_pwm0_ch0_ds>; + pinctrl-2 = <&pinctrl_pwm0_ch3_en>; + pinctrl-3 = <&pinctrl_pwm0_ch3_ds>; + fsl,pwm-clk-ps = <7>; + fsl,pwm-cpwm = <0>; + fsl,pwm-number = <2>; + fsl,pwm-channels = <0 3>; + ... + }; + +leds { + compatible = "pwm-leds"; + led { + label = "fsl_led"; + pwms = <&pwm0 0 10000000 0>; + max-brightness = <127>; + }; + backlight { + label = "fsl_backlight"; + pwms = <&pwm0 3 10000000 1>; + max-brightness = <100>; + }; +};