From: Jarkko Nikula Subject: Re: ALSA with linux-omap Date: Fri, 16 Jan 2009 09:37:53 +0200 Message-ID: <20090116093753.314559ab.jarkko.nikula@nokia.com> References: <496FE1C9.509@balister.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.nokia.com ([192.100.105.134]:23089 "EHLO mgw-mx09.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753501AbZAPHiy (ORCPT ); Fri, 16 Jan 2009 02:38:54 -0500 In-Reply-To: <496FE1C9.509@balister.org> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: ext Philip Balister Cc: "linux-omap@vger.kernel.org" On Thu, 15 Jan 2009 18:24:25 -0700 "ext Philip Balister" wrote: > cat /dev/random > /dev/dsp make a brief soft sound, then stops. Ctrl-c > and you can hear a pop a few seconds later. > This sounds like digital audio link between cpu and codec is working but DMA stalls after transmitting one ALSA period or buffer. What's your HW? And probably you are using ASoC on OMAP. I.e. CONFIG_SND_SOC & CONFIG_SND_OMAP_SOC? > Does this make any sense to anyone? The non pm kernels have been working > great. > I'm also curious to know since unfortunately I haven't investigated yet how well ASoC OMAP drivers co-operate with the dynamic PM. Jarkko