From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id 9AF95E007CD; Thu, 22 Jan 2015 11:05:16 -0800 (PST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low * trust * [209.85.192.174 listed in list.dnswl.org] * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] Received: from mail-pd0-f174.google.com (mail-pd0-f174.google.com [209.85.192.174]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 64E39E005B4 for ; Thu, 22 Jan 2015 11:05:12 -0800 (PST) Received: by mail-pd0-f174.google.com with SMTP id ft15so3320321pdb.5 for ; Thu, 22 Jan 2015 11:05:12 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:date:from:user-agent:mime-version:to :subject:references:in-reply-to:content-type :content-transfer-encoding; bh=EZozc8n55UqJcEsRzWdcWKdYQfE8HCJvkyh5kHndlaU=; b=VUHrFtnVorx7DPr1SjEC0Fg+F3XpYU1xx2NM2lU1dVHBJ037UY6Ppn5gkhElpwqho6 E/CHQgiSWJfy0johz37XHVSi8MEzYOHUtJ8RsSCugiYnt3fvxGLla64ZIiK5EaFjuTsI tl1RHjr8KtpvxNAhAT4RijFNEe1ingw0UDEhyWkTkRum7x55OPrrom5hvv+cHtRzGpsO 21uA8UTq+tjXWh8HCIvBoWfJ6zQKVlyEyR2mFXr4WribYkF4EKJyzsnItprzE3oEQWeR qTl9Xz1p5WNm5h+wWnEB4wzZwOIxY+y2YgnINSwr/lCzMun5HSwr7dXKexGnxNdnUarV b8gw== X-Gm-Message-State: ALoCoQkoCiUJk9BEqyvTf2Q+HRcSXKLvjHvdVHAZFzW3JOl51Tej16sr4PfeGIKLJBTcMPhAsyUU X-Received: by 10.68.68.167 with SMTP id x7mr4732472pbt.23.1421953512261; Thu, 22 Jan 2015 11:05:12 -0800 (PST) Received: from [192.168.0.139] (wsip-70-184-93-199.ph.ph.cox.net. [70.184.93.199]) by mx.google.com with ESMTPSA id fz15sm6751387pdb.71.2015.01.22.11.05.10 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 22 Jan 2015 11:05:11 -0800 (PST) Message-ID: <54C149E5.6040303@boundarydevices.com> Date: Thu, 22 Jan 2015 12:05:09 -0700 From: Eric Nelson User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 MIME-Version: 1.0 To: Gary Thomas , Nikolay Dimitrov , meta-freescale@yoctoproject.org References: <54BED2E8.70901@mail.bg> <54BEF411.9080503@mail.bg> <54BF0F40.6030407@mail.bg> <54C03C72.3050502@mail.bg> <54C0F9FE.6020208@mlbassoc.com> <54C14241.4090805@mail.bg> <54C1430A.6050303@mlbassoc.com> In-Reply-To: <54C1430A.6050303@mlbassoc.com> Subject: Re: Audio glitch with SGTL5000 X-BeenThere: meta-freescale@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Usage and development list for the meta-fsl-* layers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Jan 2015 19:05:16 -0000 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit On 01/22/2015 11:35 AM, Gary Thomas wrote: > On 2015-01-22 11:32, Nikolay Dimitrov wrote: >> Hi Gary, >> >> On 01/22/2015 03:24 PM, Gary Thomas wrote: >>> Are you using headphone or line-out? >>> >>> My i.MX6 boards all suffer from this annoying pop - it would be great >>> to get to the bottom of this. >> >> Before applying my ugly fix, I can hear the glitch on both outputs, >> but need to warn you that my headphones test is flawed, as the >> SGTL5000 codec on my board is improperly >> connected to the headphones (audio output is only 2-wire DC-decoupled >> instead of using 3-wire cap-less output with virtual ground). >> >> Are you looking for a fix for line-out, headphones, both? Also, which >> kernel are you using? > > Currently, only headphones. > > I'm using linux-boundary/3.10.31 > Which has the SMALL_POP fix applied: https://github.com/boundarydevices/linux-imx6/commit/983ce7a