From patchwork Thu Jan 3 14:05:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 10747349 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 58CF01880 for ; Thu, 3 Jan 2019 14:13:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 49F4B2873A for ; Thu, 3 Jan 2019 14:13:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4849B2874C; Thu, 3 Jan 2019 14:13:11 +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=-2.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,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 45A19287C2 for ; Thu, 3 Jan 2019 14:13:10 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 122DF267C26; Thu, 3 Jan 2019 15:04:13 +0100 (CET) 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 A95FC267C09; Thu, 3 Jan 2019 15:04:06 +0100 (CET) Received: from lelv0143.ext.ti.com (lelv0143.ext.ti.com [198.47.23.248]) by alsa0.perex.cz (Postfix) with ESMTP id 10956267BDE for ; Thu, 3 Jan 2019 15:04:03 +0100 (CET) Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id x03E411M105836; Thu, 3 Jan 2019 08:04:01 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1546524241; bh=G1VelCFHk487LDZk3rSTti0A+x1tj4BJ75Uu/m/XSgE=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=cYPPBzg6oTPn15k/pwUcvZa9ZQ2IN7P5twUmFe3t0LCeDfEojufiVjaRkaz6ds1aX tjh+NxoesRNtdqxZt6VF2wITA5iDW749Nvhfszj6DBM15Q244nRR/Ua7StPVgtAWzv YiVKZpJnrr+vFwqfGVKhTNjFWQJtPOXg5bWt3l4g= Received: from DLEE110.ent.ti.com (dlee110.ent.ti.com [157.170.170.21]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x03E40OD020771 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 3 Jan 2019 08:04:00 -0600 Received: from DLEE105.ent.ti.com (157.170.170.35) by DLEE110.ent.ti.com (157.170.170.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Thu, 3 Jan 2019 08:04:00 -0600 Received: from dflp33.itg.ti.com (10.64.6.16) by DLEE105.ent.ti.com (157.170.170.35) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1591.10 via Frontend Transport; Thu, 3 Jan 2019 08:04:00 -0600 Received: from feketebors.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id x03E3rlO021111; Thu, 3 Jan 2019 08:03:58 -0600 From: Peter Ujfalusi To: , Date: Thu, 3 Jan 2019 16:05:51 +0200 Message-ID: <20190103140552.29809-3-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190103140552.29809-1-peter.ujfalusi@ti.com> References: <20190103140552.29809-1-peter.ujfalusi@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, jsarha@ti.com, robh+dt@kernel.org, misael.lopez@ti.com Subject: [alsa-devel] [PATCH 2/3] bindings: sound: davinci-mcasp: Document GPIO support 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 McASP pins can be used as GPIO, add optional section to enable GPIO support for McASP. Signed-off-by: Peter Ujfalusi --- .../bindings/sound/davinci-mcasp-audio.txt | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt index b279b6072bd5..a58f79f5345c 100644 --- a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt +++ b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt @@ -45,6 +45,23 @@ Optional properties: - fck_parent : Should contain a valid clock name which will be used as parent for the McASP fck +Optional GPIO support: +If any McASP pin need to be used as GPIO then the McASP node must have: +... + gpio-controller + #gpio-cells = <2>; +... + +When requesting a GPIO, the first parameter is the PIN index in McASP_P* +registers. +For example to request the AXR2 pin of mcasp8: +function-gpios = <&mcasp8 2 0>; + +Or to request the ACLKR pin of mcasp8: +function-gpios = <&mcasp8 29 0>; + +For generic gpio information, please refer to bindings/gpio/gpio.txt + Example: mcasp0: mcasp0@1d00000 {