From patchwork Wed Sep 6 13:20:36 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Fitzgerald X-Patchwork-Id: 810583 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3xnPNh2Cptz9t2R for ; Wed, 6 Sep 2017 23:21:08 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754562AbdIFNVG (ORCPT ); Wed, 6 Sep 2017 09:21:06 -0400 Received: from mx0a-001ae601.pphosted.com ([67.231.149.25]:40602 "EHLO mx0b-001ae601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754561AbdIFNU6 (ORCPT ); Wed, 6 Sep 2017 09:20:58 -0400 Received: from pps.filterd (m0077473.ppops.net [127.0.0.1]) by mx0a-001ae601.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v86DKknd000545; Wed, 6 Sep 2017 08:20:47 -0500 Authentication-Results: ppops.net; spf=none smtp.mailfrom=rf@opensource.wolfsonmicro.com Received: from mail4.cirrus.com ([87.246.98.35]) by mx0a-001ae601.pphosted.com with ESMTP id 2cqt20jwhv-1; Wed, 06 Sep 2017 08:20:46 -0500 Received: from EX17.ad.cirrus.com (unknown [172.20.9.81]) by mail4.cirrus.com (Postfix) with ESMTP id 714FE611CE86; Wed, 6 Sep 2017 08:20:44 -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; Wed, 6 Sep 2017 14:20:44 +0100 Received: from rf-debian.ad.cirrus.com (rf-debian.ad.cirrus.com [198.90.223.45]) by imbe.wolfsonmicro.main (8.14.4/8.14.4) with ESMTP id v86DKhDU032150; Wed, 6 Sep 2017 14:20:44 +0100 From: Richard Fitzgerald To: , , , , , , CC: , , , , Subject: [PATCH v5 10/17] pinctrl: madera: Add DT bindings for Cirrus Logic Madera codecs Date: Wed, 6 Sep 2017 14:20:36 +0100 Message-ID: <1504704043-8052-11-git-send-email-rf@opensource.wolfsonmicro.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1504704043-8052-1-git-send-email-rf@opensource.wolfsonmicro.com> References: <1504704043-8052-1-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=8.0.1-1707230000 definitions=main-1709060186 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org 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 Acked-by: Rob Herring --- No changes since V4 .../bindings/pinctrl/cirrus,madera-pinctrl.txt | 99 ++++++++++++++++++++++ 1 file changed, 99 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..b0e36cf --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/cirrus,madera-pinctrl.txt @@ -0,0 +1,99 @@ +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 properties for this driver exist within the parent MFD driver node. + +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 subnodes containing default + configurations + +Required subnodes: + One subnode is required to contain the default settings. It contains an + arbitrary number of configuration subnodes, one for each group or pin + configuration you want to apply as a default. + +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_defaults>; + + cs47l85_defaults: cs47l85-gpio-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>; + }; + }; +};