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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E23DBC433F5 for ; Mon, 21 Feb 2022 12:55:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358378AbiBUM4D (ORCPT ); Mon, 21 Feb 2022 07:56:03 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:52190 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233385AbiBUM4C (ORCPT ); Mon, 21 Feb 2022 07:56:02 -0500 Received: from lelv0142.ext.ti.com (lelv0142.ext.ti.com [198.47.23.249]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DC3531C10F; Mon, 21 Feb 2022 04:55:39 -0800 (PST) Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 21LCtNQl071574; Mon, 21 Feb 2022 06:55:23 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1645448123; bh=Ldesc9E9S6OV1ULQBDllRREpqpso1MX11dz5s4qIfkE=; h=Date:From:To:CC:Subject:References:In-Reply-To; b=bN3yr06kwogpyXgikL5UHPTiPSSyPuoFfAMjZFdF0kxOpZU1h3oeDpIezYGXghR75 HP5cueo8zogJ5n4Sptor4c0ktOsbf6t2FR5kReY4TjpineJZfnf0golZj90l0HbGze EZgzEQGZohwP8/Z3J/yWSFDWrbYL3BDLK/DDVRd4= Received: from DFLE101.ent.ti.com (dfle101.ent.ti.com [10.64.6.22]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 21LCtMlw059858 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 21 Feb 2022 06:55:22 -0600 Received: from DFLE111.ent.ti.com (10.64.6.32) by DFLE101.ent.ti.com (10.64.6.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Mon, 21 Feb 2022 06:55:22 -0600 Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Mon, 21 Feb 2022 06:55:22 -0600 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 21LCtM5f038962; Mon, 21 Feb 2022 06:55:22 -0600 Date: Mon, 21 Feb 2022 06:55:22 -0600 From: Nishanth Menon To: Drew Fustini CC: =?iso-8859-1?Q?Beno=EEt?= Cousson , Bjorn Andersson , Dave Gerlach , , Keerthy , , , , , Mathieu Poirier , Rob Herring , Santosh Shilimkar , Tony Lindgren , , Subject: Re: [PATCH 02/11] dt-bindings: wkup_m3_ipc: Add vtt toggling bindings Message-ID: <20220221125522.l3tntb6i7yjxp6vb@flattered> References: <20220219215328.485660-1-dfustini@baylibre.com> <20220219215328.485660-3-dfustini@baylibre.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20220219215328.485660-3-dfustini@baylibre.com> User-Agent: NeoMutt/20171215 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 13:53-20220219, Drew Fustini wrote: > From: Dave Gerlach > > Add description of the wkup_m3_ipc DT properties that can be used to > toggle VTT regulator during low power mode transitions. > > Signed-off-by: Dave Gerlach > Signed-off-by: Drew Fustini > --- > .../bindings/soc/ti/wkup_m3_ipc.txt | 34 +++++++++++++++++++ NAK. no more txt files please. convert to yaml prior to adding features. > 1 file changed, 34 insertions(+) > > diff --git a/Documentation/devicetree/bindings/soc/ti/wkup_m3_ipc.txt b/Documentation/devicetree/bindings/soc/ti/wkup_m3_ipc.txt > index 401550487ed6..4cdbb60fd0d0 100644 > --- a/Documentation/devicetree/bindings/soc/ti/wkup_m3_ipc.txt > +++ b/Documentation/devicetree/bindings/soc/ti/wkup_m3_ipc.txt > @@ -55,3 +55,37 @@ Example: > ... > }; > }; > + > +Support for VTT Toggle > +================================== > +In order to enable the support for VTT toggle during Suspend/Resume > +sequence needed by some boards (like AM335x EVM-SK & AM437x GP EVM), > +the below DT properties are required. It is possible to toggle VTT > +using one of two methods depending on the SoC being used, either > +GPIO0 toggle (AM335x and AM437x), or any GPIO with DS_PAD_CONFIG > +bits in the control module (AM437x only). > + > +VTT Toggle using GPIO0 > +---------------------------------- > +Supported by: AM335x and AM437x > +Used on: AM335x EVM-SK > + > +Optional properties: > +- ti,needs-vtt-toggle: Indicates that the boards requires VTT toggling > + during suspend/resume. > +- ti,vtt-gpio-pin: Specifies the GPIO0 pin used for VTT toggle. > + > +Important Note: > +- Here it is assumed that VTT Toggle will be done using a pin on GPIO-0 Instance. > + It will not work on any other GPIO using the above properties, regardless of > + which part is being used. > + > +Example: > + wkup_m3_ipc: wkup_m3_ipc@1324 { > + compatible = "ti,am3352-wkup-m3-ipc"; > + ... > + ... > + ti,needs-vtt-toggle; > + ti,vtt-gpio-pin = <7>; > + ... > + }; > -- > 2.32.0 > -- Regards, Nishanth Menon Key (0xDDB5849D1736249D)/Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D