From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pierre-Louis Bossart Subject: Re: Applied "ASoC: Intel: add bytct-rt5651 machine driver" to the asoc tree Date: Tue, 31 May 2016 15:27:45 -0500 Message-ID: References: <1851514.XmzcdsvJt0@wks-pdc-gentoo> <1680237.irs5HCh7f7@wks-pdc-gentoo> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by alsa0.perex.cz (Postfix) with ESMTP id 041232651D1 for ; Tue, 31 May 2016 22:27:48 +0200 (CEST) In-Reply-To: <1680237.irs5HCh7f7@wks-pdc-gentoo> 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: Pietro Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org the changes look ok > > But I still have the same problem: Audio plays slowly. > > > > It seems the DSP is clocked at 19.2, but the system is still clocked for > 25, and these changes doesn't seem to have effects... no, CHT doesn't have a 25 MHz clock at all so that's just not physically possible. Can you try: - tracing to make sure you are actually on a CHT device - pastebin dmesg somewhere - sudo cat /sys/bus/acpi/devices/10EC5651:01/status - enabling DSP loopbacks to see if the DSP consumes data at the right rate. look at the UCM file and change cset "name='pcm1_out mix 0 pcm0_in Switch' off" to on if you record and loopback on USB output this should play at the right speed.