From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Nelson Subject: Re: [PATCH RFC 0/6] ASoC: sgtl5000: fix use of regulators and internal LDO Date: Fri, 06 Mar 2015 16:31:28 -0700 Message-ID: <54FA38D0.1060203@boundarydevices.com> References: <1424991273-10081-1-git-send-email-eric.nelson@boundarydevices.com> <54FA2F03.2060804@boundarydevices.com> <20150306225337.GH8656@n2100.arm.linux.org.uk> <54FA3122.9050805@boundarydevices.com> <54FA3542.1010402@boundarydevices.com> <20150306232429.GI8656@n2100.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-pa0-f41.google.com (mail-pa0-f41.google.com [209.85.220.41]) by alsa0.perex.cz (Postfix) with ESMTP id F3C6A26609F for ; Sat, 7 Mar 2015 00:31:33 +0100 (CET) Received: by paceu11 with SMTP id eu11so41307262pac.1 for ; Fri, 06 Mar 2015 15:31:32 -0800 (PST) In-Reply-To: <20150306232429.GI8656@n2100.arm.linux.org.uk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Russell King - ARM Linux Cc: fabio.estevam@freescale.com, alsa-devel@alsa-project.org, lars@metafoo.de, tiwai@suse.de, lgirdwood@gmail.com, broonie@kernel.org, jean-michel.hautbois@vodalys.com, troy.kisky@boundarydevices.com List-Id: alsa-devel@alsa-project.org Hi Russell, On 03/06/2015 04:24 PM, Russell King - ARM Linux wrote: > On Fri, Mar 06, 2015 at 04:16:18PM -0700, Eric Nelson wrote: >> Hi Russell, >> >> >> >> I'm not sure why the code above is needed though. >> >> Do you know what sequence of events causes this to fail? > > All that I remember is that as the mainline code stood in 3.19 etc, > the SGTL5k would be partially detected and then I2C communication > with it was lost. Probing the pins with a scope showed that it had > basically lost power. > > The patch above is over a year old now, and I don't remember much > more detail than that. > > I'm not going to be physically in a state where I can look at it for > about a week and a bit, sorry. > No worries. I appreciate the feedback.