From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Hilman Subject: Re: Beagleboard xM crashes when being set to 800MHz with smartreflex on linux-omap-3.6-rc6 Date: Mon, 01 Oct 2012 17:00:25 -0700 Message-ID: <87391xbv52.fsf@deeprootsystems.com> References: <5448984682E7954C9BFF27F747A9C6CA56E38E@dolphin.TIGRIS.local> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-pb0-f46.google.com ([209.85.160.46]:64516 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757723Ab2JBAA1 (ORCPT ); Mon, 1 Oct 2012 20:00:27 -0400 Received: by pbbrr4 with SMTP id rr4so8234597pbb.19 for ; Mon, 01 Oct 2012 17:00:27 -0700 (PDT) In-Reply-To: <5448984682E7954C9BFF27F747A9C6CA56E38E@dolphin.TIGRIS.local> (Maximilian Schwerin's message of "Fri, 21 Sep 2012 08:45:16 +0200") Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Maximilian Schwerin Cc: linux-omap@vger.kernel.org "Maximilian Schwerin" writes: > Hi, > > I've just built a linux-omap kernel at 3.6-rc6 using omap2plus_defconfig > as basis for the kernel config. > > When I enable smartreflex and switch to 800MHz via > > echo 1 > /sys/kernel/debug/smartreflex/smartreflex_core/autocomp > echo 1 > /sys/kernel/debug/smartreflex/smartreflex_mpu_iva/autocomp > cpufreq-set -f 800MHz > > the board crashes. If I switch to 800MHz and enable smartreflex later > nothing happens. This used to work in my 3.3 based kernel. SmartReflex is kwown to be unstable in mainline and there are several errata that still need fixing for it to be stable. I strongly recommend you simply leave SR disabled. Kevin