From patchwork Mon Apr 24 16:08:37 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Fitzgerald X-Patchwork-Id: 9696705 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4979A603F3 for ; Mon, 24 Apr 2017 16:11:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3955E28179 for ; Mon, 24 Apr 2017 16:11:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2D8C42835B; Mon, 24 Apr 2017 16:11:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 93DCE28179 for ; Mon, 24 Apr 2017 16:11:37 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 771B5267368; Mon, 24 Apr 2017 18:09:12 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 9419E266DF2; Mon, 24 Apr 2017 18:09:10 +0200 (CEST) Received: from mx0b-001ae601.pphosted.com (mx0b-001ae601.pphosted.com [67.231.152.168]) by alsa0.perex.cz (Postfix) with ESMTP id 9776C266DE0 for ; Mon, 24 Apr 2017 18:08:53 +0200 (CEST) Received: from pps.filterd (m0077474.ppops.net [127.0.0.1]) by mx0b-001ae601.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v3OG4PHb028095; Mon, 24 Apr 2017 11:08:52 -0500 Authentication-Results: ppops.net; spf=none smtp.mailfrom=rf@opensource.wolfsonmicro.com Received: from mail1.cirrus.com (mail1.cirrus.com [141.131.3.20]) by mx0b-001ae601.pphosted.com with ESMTP id 2a03kme4qj-1; Mon, 24 Apr 2017 11:08:52 -0500 Received: from EX17.ad.cirrus.com (unknown [172.20.9.81]) by mail1.cirrus.com (Postfix) with ESMTP id DAD026121AC4; Mon, 24 Apr 2017 11:08:51 -0500 (CDT) Received: from imbe.wolfsonmicro.main (198.61.95.81) by EX17.ad.cirrus.com (172.20.9.81) with Microsoft SMTP Server id 14.3.301.0; Mon, 24 Apr 2017 17:08:46 +0100 Received: from rf-debian.ad.cirrus.com (rf-debian.ad.cirrus.com [198.90.223.7]) by imbe.wolfsonmicro.main (8.14.4/8.14.4) with ESMTP id v3OG7tRa026794; Mon, 24 Apr 2017 17:07:57 +0100 From: Richard Fitzgerald To: , , , , , , Date: Mon, 24 Apr 2017 17:08:37 +0100 Message-ID: <1493050124-5970-12-git-send-email-rf@opensource.wolfsonmicro.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1493050124-5970-1-git-send-email-rf@opensource.wolfsonmicro.com> References: <1493050124-5970-1-git-send-email-rf@opensource.wolfsonmicro.com> MIME-Version: 1.0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000 definitions=main-1704240276 Cc: linux-gpio@vger.kernel.org, alsa-devel@alsa-project.org, patches@opensource.wolfsonmicro.com, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [alsa-devel] [PATCH v2 11/18] dt-bindings: pinctrl: Add bindings for Cirrus Logic Madera codecs X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP This is the binding description of the pinctrl driver for Cirru Logic Madera codecs. The binding uses the generic pinctrl binding so the main purpose here is to describe the device-specific names for groups and functions. Signed-off-by: Richard Fitzgerald Reviewed-by: Linus Walleij Acked-by: Rob Herring --- Changes since V1: - split out from main pinctrl patch into a separate patch - fixed typo in pinctrl-names property description .../bindings/pinctrl/cirrus,madera-pinctrl.txt | 102 +++++++++++++++++++++ 1 file changed, 102 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/cirrus,madera-pinctrl.txt diff --git a/Documentation/devicetree/bindings/pinctrl/cirrus,madera-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/cirrus,madera-pinctrl.txt new file mode 100644 index 0000000..0de91b5 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/cirrus,madera-pinctrl.txt @@ -0,0 +1,102 @@ +Cirrus Logic Madera class audio codecs pinctrl driver + +The Cirrus Logic Madera codecs provide a number of GPIO functions for +interfacing to external hardware and to provide logic outputs to other devices. +Certain groups of GPIO pins also have an alternate function, normally as an +audio interface. + +The set of available GPIOs, functions and alternate function groups differs +between codecs so refer to the datasheet for the codec for further information +on what is supported on that device. + +The root node for this driver must be a subnode of the parent MFD driver node. +It contains one subnode that is a container for an arbitrary number of subnodes +to configure each pin or function group. + +See also + the core bindings for the parent MFD driver: + Documentation/devicetree/bindings/mfd/madera.txt + + the generic pinmix bindings: + Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt + +Required properties of parent mfd node: + - pinctrl-names : must be "default" + - pinctrl-0 : a phandle to the node containing the configuration subnodes + +Required properties of pinctrl subnode: + - compatible : must be "cirrus,madera-pinctrl" + +Required properties of configuration subnodes: + - groups : name of one pin group to configure. One of: + aif1, aif2, aif3, aif4, mif1, mif2, mif3, pdmspk1, pdmspk2, + dmic4, dmic5, dmic6, + gpio1, gpio2, ..., gpio40 + The gpioN groups select the single pin of this name for configuration + +Optional properties of configuration subnodes: + Any configuration option not explicitly listed in the dts will be left at + chip default setting. + + - function : name of function to assign to this group. One of: + aif1, aif2, aif3, aif4, mif1, mif2, mif3, pdmspk1, pdmspk2, + dmic3, dmic4, dmic5, dmic6, + io, dsp-gpio, irq1, irq2, + fll1-clk, fll1-lock, fll2-clk, fll2-lock, fll3-clk, fll3-lock, + fllao-clk, fllao-lock, + opclk, opclk-async, pwm1, pwm2, spdif, + asrc1-in1-lock, asrc1-in2-lock, asrc2-in1-lock, asrc2-in2-lock, + spkl-short-circuit, spkr-short-circuit, spk-shutdown, + spk-overheat-shutdown, spk-overheat-warn, + timer1-sts, timer2-sts, timer3-sts, timer4-sts, timer5-sts, timer6-sts, + timer7-sts, timer8-sts, + log1-fifo-ne, log2-fifo-ne, log3-fifo-ne, log4-fifo-ne, log5-fifo-ne, + log6-fifo-ne, log7-fifo-ne, log8-fifo-ne, + + - bias-disable : disable pull-up and pull-down + - bias-bus-hold : enable buskeeper + - bias-pull-up : output is pulled-up + - bias-pull-down : output is pulled-down + - drive-push-pull : CMOS output + - drive-open-drain : open-drain output + - drive-strength : drive strength in mA. Valid values are 4 or 8 + - input-schmitt-enable : enable schmitt-trigger mode + - input-schmitt-disable : disable schmitt-trigger mode + - input-debounce : A value of 0 disables debounce, a value !=0 enables + debounce + - output-low : set the pin to output mode with low level + - output-high : set the pin to output mode with high level + +Example: + +cs47l85@0 { + compatible = "cirrus,cs47l85"; + + pinctrl-names = "default"; + pinctrl-0 = <&cs47l85_gpio_defaults>; + + pinctrl { + compatible = "cirrus,madera-pinctrl"; + + cs47l85_gpio_defaults: defaults { + aif1 { + groups = "aif1"; + function = "aif1"; + bias-bus-hold; + }; + + aif2 { + groups = "aif2"; + function = "aif2"; + bias-bus-hold; + }; + + opclk { + groups = "gpio1"; + function = "opclk"; + bias-pull-up; + drive-strength = <8>; + }; + }; + }; +};