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 8BF5EC4332F for ; Wed, 23 Nov 2022 11:06:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237573AbiKWLGZ (ORCPT ); Wed, 23 Nov 2022 06:06:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38812 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237567AbiKWLGE (ORCPT ); Wed, 23 Nov 2022 06:06:04 -0500 Received: from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com [185.132.182.106]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9BD55BBC; Wed, 23 Nov 2022 03:05:09 -0800 (PST) Received: from pps.filterd (m0288072.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2ANAapRm023568; Wed, 23 Nov 2022 12:04:43 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=message-id : date : mime-version : subject : to : cc : references : from : in-reply-to : content-type : content-transfer-encoding; s=selector1; bh=u0sShtivsgK/20XBxCveeAhPRdkeUJsHdC8lqu1cuGU=; b=Eg240EFQCP7w8o+l4HFuPIv4z4pgaDZZUT9YTRzpEYf5NNFxEr3HvWzQUb9IRNSCt8Uo CyXtcytbZhL7PM/FRT8YJ1n1XIkh6PpkeRJ95DIQMHnWp2d3f3357cqMszu2PAj9DVBT aKgSQmD6Z5Ij2vKyHvw87cOQcZA9SUyUyZJlF/U+jLmruAHiBEILu951zRkDUkXtiLMh xxzOv9E+D6kBXxGEWQOuL1Jr4hj/DKcdEI9uhfhC7xHLVOPVDQukR0GrcJnwCMqr6hmI TFd7fTNvMKtXgOPVWlq/ebzIY+57NHlKMR+nfHmT/WD61oUuB8z9QDziJV2jdg8hCTZl Lw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3m10c4e1wq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 23 Nov 2022 12:04:43 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 13458100034; Wed, 23 Nov 2022 12:04:38 +0100 (CET) Received: from Webmail-eu.st.com (shfdag1node2.st.com [10.75.129.70]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 0DD0421A229; Wed, 23 Nov 2022 12:04:38 +0100 (CET) Received: from [10.48.1.102] (10.48.1.102) by SHFDAG1NODE2.st.com (10.75.129.70) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.13; Wed, 23 Nov 2022 12:04:37 +0100 Message-ID: Date: Wed, 23 Nov 2022 12:04:36 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.2 Subject: Re: [PATCH 0/3] iio: adc: stm32: add smart calibration Content-Language: en-US To: Olivier Moysan , Jonathan Cameron , Lars-Peter Clausen , Maxime Coquelin , Alexandre Torgue CC: , , , References: <20221115103124.70074-1-olivier.moysan@foss.st.com> From: Fabrice Gasnier In-Reply-To: <20221115103124.70074-1-olivier.moysan@foss.st.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.48.1.102] X-ClientProxiedBy: EQNCAS1NODE3.st.com (10.75.129.80) To SHFDAG1NODE2.st.com (10.75.129.70) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-11-23_05,2022-11-23_01,2022-06-22_01 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org On 11/15/22 11:31, Olivier Moysan wrote: > Refine offset and linear calibration strategy for STM32MP15 and > STM32MP13 SoCs: > > - offset calibration > This calibration depends on factors such as temperature and voltage. > As it is not time consuming, it's worth doing it on each ADC > start, to get the best accuracy. There is no need to save these data. > > - linear calibration > This calibration is basically SoC dependent, so it can be done only once. > When this calibration has been performed at boot stage, the ADC kernel > driver can retrieve the calibration data from the ADC registers. > Otherwise, the linear calibration is performed once by the ADC driver. > The backup of these data, allows to restore them on successive ADC starts. > > Olivier Moysan (3): > iio: adc: stm32-adc: smart calibration support > iio: adc: stm32-adc: improve calibration error log > iio: adc: stm32-adc: add debugfs to read raw calibration result Hi Olivier, For the series, you can add my: Reviewed-by: Fabrice Gasnier Thanks, Fabrice > > drivers/iio/adc/stm32-adc-core.h | 1 + > drivers/iio/adc/stm32-adc.c | 135 ++++++++++++++++++------------- > 2 files changed, 78 insertions(+), 58 deletions(-) >