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[209.132.180.67]) by mx.google.com with ESMTP id v2-v6si21367207pge.105.2018.05.09.11.32.05; Wed, 09 May 2018 11:32:20 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=temperror (no key for signature) header.i=@micronovasrl.com header.s=dkim header.b=GgLzWC1I; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935535AbeEISbp (ORCPT + 99 others); Wed, 9 May 2018 14:31:45 -0400 Received: from mail.micronovasrl.com ([212.103.203.10]:59806 "EHLO mail.micronovasrl.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935435AbeEISbm (ORCPT ); Wed, 9 May 2018 14:31:42 -0400 Received: from mail.micronovasrl.com (mail.micronovasrl.com [127.0.0.1]) by mail.micronovasrl.com (Postfix) with ESMTP id 76474B00ADC for ; Wed, 9 May 2018 20:31:41 +0200 (CEST) Authentication-Results: mail.micronovasrl.com (amavisd-new); dkim=pass reason="pass (just generated, assumed good)" header.d=micronovasrl.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=micronovasrl.com; h=content-transfer-encoding:content-language:content-type :content-type:in-reply-to:mime-version:user-agent:date:date :message-id:from:from:references:to:subject:subject; s=dkim; t= 1525890700; x=1526754701; bh=Wo27QmymDRAwOSXd3wakNpnO0kqtZxm1ZkD 2O6TZNQc=; b=GgLzWC1ITpQbubM1WKP1VJepcHm+tDs8MGdBK/pymCwtH3j4hNT I2xjbb2aj8QntSEigdnwM+w8vPhuQiBmmAUFUam3D/Me3Sj5INp39E1QN2zqyqF/ AlLmqLe6jv5/3tPFMZQPnoHJyYpTHirKjRBMxTlqyU+alvyySWeqwPCQ= X-Virus-Scanned: Debian amavisd-new at mail.micronovasrl.com X-Spam-Flag: NO X-Spam-Score: -2.899 X-Spam-Level: X-Spam-Status: No, score=-2.899 tagged_above=-10 required=4.5 tests=[ALL_TRUSTED=-1, BAYES_00=-1.9, LOTS_OF_MONEY=0.001] autolearn=ham autolearn_force=no Received: from mail.micronovasrl.com ([127.0.0.1]) by mail.micronovasrl.com (mail.micronovasrl.com [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id qj8HpYIUstWX for ; Wed, 9 May 2018 20:31:40 +0200 (CEST) Received: from [192.168.2.71] (62-11-51-166.dialup.tiscali.it [62.11.51.166]) by mail.micronovasrl.com (Postfix) with ESMTPSA id DB346B002BB; Wed, 9 May 2018 20:31:39 +0200 (CEST) Subject: Re: [PATCH 3/4] rtc: ds1307: add calibration of_ for mt41txx chips. To: Alexandre Belloni Cc: a.zummo@towertech.it, robh+dt@kernel.org, mark.rutland@arm.com, linux-rtc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20180508145611.49072-1-giulio.benetti@micronovasrl.com> <20180508145611.49072-3-giulio.benetti@micronovasrl.com> <20180508191956.GP10960@piout.net> From: Giulio Benetti Message-ID: <4d1b1ead-9439-210e-f246-cb49219390f5@micronovasrl.com> Date: Wed, 9 May 2018 20:31:39 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <20180508191956.GP10960@piout.net> Content-Type: text/plain; charset=iso-8859-15; format=flowed Content-Language: it Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Alexandre, Il 08/05/2018 21:19, Alexandre Belloni ha scritto: > Hi, > > There is a sysfs interface for calibration, please use it. this is > especially useful since the calibration value probably depend on > temperature so it has to be updated dynamically to be really useful. > > See https://elixir.bootlin.com/linux/v4.16.7/source/Documentation/ABI/testing/sysfs-class-rtc#L68 > and https://elixir.bootlin.com/linux/v4.16.7/source/drivers/rtc/interface.c#L999 > Used sysfs now and just submitted V2 patchset. Thanks for pointing me those links. -- Giulio Benetti CTO MICRONOVA SRL Sede: Via A. Niedda 3 - 35010 Vigonza (PD) Tel. 049/8931563 - Fax 049/8931346 Cod.Fiscale - P.IVA 02663420285 Capitale Sociale ? 26.000 i.v. Iscritta al Reg. Imprese di Padova N. 02663420285 Numero R.E.A. 258642