Received: by 2002:a25:824b:0:0:0:0:0 with SMTP id d11csp8414160ybn; Tue, 1 Oct 2019 07:48:34 -0700 (PDT) X-Google-Smtp-Source: APXvYqyljrkAWK7pQz0s9SQUS08rZ6Zk3DZH2ELEwXXq1pvZVNoIGzMGnlazJKocGcGrq+6bkXXd X-Received: by 2002:a17:906:f204:: with SMTP id gt4mr24381804ejb.299.1569941314392; Tue, 01 Oct 2019 07:48:34 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1569941314; cv=none; d=google.com; s=arc-20160816; b=U/3CuTMJ9SbX4iVXWnFWlx20K0Jw1SKyQoejxjqmUWNE2zmqlIkWihwd61DLOb5XVL r4ulESxAC5kGyGxx+NM03Jj4qTdUPAN1AYFMdJ3BM1Ooo8vtopbnW7z63b9YkqOsvRuR tP1w944qIzdRLcQXaC0REztN0dCM5Bu7bMZ5O5HB04H4iSWWP9SiJUraLDeoAaZ51BEh kxWEGyFh37fwnXz0ANCR7oNwpw3F7Ot33TgmFynMMRi/z8XNl0/LQkt7aJdwSm0NxeAK eHvO5UpYfXACpl9JPugubtau57V5eIt8tBDjZdd9GTFaMWii/z//OR8j3Yah2SP5TAia aIIQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=MbUa04KuNgItVwY5USdZ6TyEdh7Ae9N8Gs4WWEOl86M=; b=TCmAZP8cPdU5WzY8kFpzjKATccxxgKAxsw7lAPSXkAVeHeETG6dpzchXq7NrmfPDDG rLQfRC6WZiEXfbwd2F4umsoBtVYZOaM7iIC+2FdQYts1FeCQezAZVxn4N+xUnRSz3Kia KnX6KG38KA5Qei4tOy7YOc0FJRXStoMiwxCjBfI3FqOiISZtleKDnUvkjHCegsB65dTb TY9WoW/S2gH3i/L/HwNTcMPqudNuPQwTqOovRvjDXQpG7Cf18X3VEAqFIMfK7/7ijWb5 UpPTTT+aCDGH1V1LHXujdq6xU6ftDKoFNeOKte0lF+ioFHumBGmeFXt9G3mGWd78fWvq QpAw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=uFmKGT1b; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id g5si10182580edb.324.2019.10.01.07.48.09; Tue, 01 Oct 2019 07:48:34 -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=pass header.i=@kernel.org header.s=default header.b=uFmKGT1b; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389065AbfJAOpP (ORCPT + 99 others); Tue, 1 Oct 2019 10:45:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:57798 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727051AbfJAOpP (ORCPT ); Tue, 1 Oct 2019 10:45:15 -0400 Received: from localhost (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C4F9520842; Tue, 1 Oct 2019 14:45:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569941115; bh=MbUa04KuNgItVwY5USdZ6TyEdh7Ae9N8Gs4WWEOl86M=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=uFmKGT1bGiYOjq9NeOF6ZlszpMGlsbIQP4oklizKksH/InvFpuvFnOy4k0wabtFDW EqN1M0DIAr0OMno+B4E6NmjoP+uDU2LQHX8AG8EWDe/er+gUhiF5mnlanLkBXk6/aQ AbfIJ9LTT2c0htND9zDy2ebgWId43mIb+VYq8iqk= Date: Tue, 1 Oct 2019 10:45:13 -0400 From: Sasha Levin To: Mark Brown Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, Jiaxin Yu Subject: Re: [PATCH AUTOSEL 5.3 087/203] ASoC: mediatek: mt6358: add delay after dmic clock on Message-ID: <20191001144513.GW8171@sasha-vm> References: <20190922184350.30563-1-sashal@kernel.org> <20190922184350.30563-87-sashal@kernel.org> <20190923182159.GV2036@sirena.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20190923182159.GV2036@sirena.org.uk> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Sep 23, 2019 at 11:21:59AM -0700, Mark Brown wrote: >On Sun, Sep 22, 2019 at 02:41:53PM -0400, Sasha Levin wrote: >> From: Jiaxin Yu >> >> [ Upstream commit ccb1fa21ef58a2ac15519bb878470762e967e8b3 ] >> >> Most dmics produce a high level when they receive clock. The difference >> between power-on and memory record time is about 10ms, but the dmic >> needs 50ms to output normal data. >> >> This commit add 100ms delay after SoC output clock so that we can cut >> off the pop noise at the beginning. > >This might mess up a production system, please don't backport it. >In general delays to eliminate pops and clicks that are part of >the PCM statup path (as opposed to DAPM) are not safe to >backport. Okay, I'll drop it, thanks. -- Thanks, Sasha