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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 88205108B8E9 for ; Fri, 20 Mar 2026 10:33:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=qsI+2W7F3CfaJSOjQ36WDkdbEuej6AfQp4Tx6/klAiY=; b=cuCGdclCKmABLRqUgVZRouHz5T XgRdzeMlThn+cgCfEnStF8M1QlMjlByW0ivaz4rj9q2pkiAq9cqzyXMe7y0o6ICSm0QgH0iYmvpVE Or1jqD2WUBrPemtyYDnYxe37AhNmzP75gei/NzsZMEdkbae/CU0NX1g/z4S5ed8ZNJNthW6UamMe/ o8I3AnsJ87zMKP192k0RwYlP1YsvG2fCideB16bzAIZJz1rBZj5kMzANyK3OQKHBBRDGU5ClakV0X 6nmsg2tC3SqUyT96ujgBkpXulfmZmaWL1V/xTOkwaqvz4cGVY12dcmajWZ+RuRtstYxAS8Mr1vmgD FR7mfw8w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w3XAi-0000000Cbww-1j8N; Fri, 20 Mar 2026 10:33:40 +0000 Received: from mgamail.intel.com ([192.198.163.12]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1w3XAg-0000000Cbwb-2Hsm for linux-arm-kernel@lists.infradead.org; Fri, 20 Mar 2026 10:33:39 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774002818; x=1805538818; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=LSQf6TghFoqm6GEMOdcWK6utgEtFgdJISULngartkrk=; b=fafL0n679MTDdG/6XnZtjfVHpzjc3CPDCdDhNhD3P1li6Sr1H39F28cU tNM+EX866RuRnJA5WoPcAmr+gW+izninI4tZtet7DSg8eusgztHPtkP/0 72lX40xNtr002s8p/DSOXbVV9wMYx2vic9R3Wf0ZUU+kAjTPNDBvIu610 B26+iWLnZWNoLoAo2XX8PhZgfnIz46F6zyx5/FlY9xCBIYy0zZpeoJT4G /ZnwnfikH2OzroDzpJszYuw6s4vQsGv+gqQyPvgRDqsegqLRzN8VjX+23 1mVpnK45Sm+HFnTEaspVeT6e/sRz600vJbtNni9bwjRm7bxLijbozZtZP g==; X-CSE-ConnectionGUID: ZYm/NCJESWW19ezVgNWfQA== X-CSE-MsgGUID: 4s46OcJHRQGMZa3kIF/FoQ== X-IronPort-AV: E=McAfee;i="6800,10657,11734"; a="78989471" X-IronPort-AV: E=Sophos;i="6.23,130,1770624000"; d="scan'208";a="78989471" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Mar 2026 03:33:38 -0700 X-CSE-ConnectionGUID: FEilcUbeSraVdBth6Vgygw== X-CSE-MsgGUID: 5JXG02puThGdgHPVUyvk/w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,130,1770624000"; d="scan'208";a="222340475" Received: from egrumbac-mobl6.ger.corp.intel.com (HELO localhost) ([10.245.245.40]) by orviesa006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Mar 2026 03:33:35 -0700 Date: Fri, 20 Mar 2026 12:33:32 +0200 From: Andy Shevchenko To: Billy Tsai Cc: Jonathan Cameron , David Lechner , Nuno =?iso-8859-1?Q?S=E1?= , Andy Shevchenko , Joel Stanley , Andrew Jeffery , linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, morris_mao@aspeedtech.com Subject: Re: [PATCH v3 4/4] iio: adc: aspeed: Reserve battery sensing channel for on-demand use Message-ID: References: <20260320-adc-v3-0-bc0eac04ef7c@aspeedtech.com> <20260320-adc-v3-4-bc0eac04ef7c@aspeedtech.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260320-adc-v3-4-bc0eac04ef7c@aspeedtech.com> Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260320_033338_594938_E3CE39D5 X-CRM114-Status: GOOD ( 10.23 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Mar 20, 2026 at 01:46:38PM +0800, Billy Tsai wrote: > For controllers with battery sensing capability (AST2600/AST2700), the > last channel uses a different circuit design optimized for battery > voltage measurement. This channel should not be enabled by default > along with other channels to avoid potential interference and power > efficiency issues. > This ensures optimal power efficiency for normal ADC operations while > maintaining full functionality when battery sensing is needed. ... > + /* > + * After enable a new channel need to wait some time for ADC stable Missed period at the end. And you probably wanted to say "...for ADC to stabilize." > + * Experiment result is 1ms. > + */ > + fsleep(1000); > + } -- With Best Regards, Andy Shevchenko