From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Michlmayr Subject: Re: tegra-devfreq hangs TK1 with R21.4 u-boot Date: Sun, 12 Jun 2016 10:31:06 -0700 Message-ID: <20160612173106.GA31522@jirafa.cyrius.com> References: <20160612034541.GA31426@jirafa.cyrius.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Shreshtha Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-tegra@vger.kernel.org * Shreshtha [2016-06-12 17:15]: > > I noticed that the Jetson TK1 hangs during boot (when/before mounting > > the SD disk) when CONFIG_ARM_TEGRA_DEVFREQ=y is set and when u-boot > > from R21.4 is used (2014.10-rc2). > > I cannot find CONFIG_ARM_TEGRA_DEVFREQ in r21.4 codeline. With default > "tegra12_defconfig", CONFIG_PM_DEVFREQ is getting enabled. > > Can you please share some more details about CONFIG_ARM_TEGRA_DEVFREQ, which > file it complies and if it is really present in code or pulled from other git. Sorry for not being clear. I'm talking about the mainline kernel from kernel.org: drivers/devfreq/Makefile:obj-$(CONFIG_ARM_TEGRA_DEVFREQ) += tegra-devfreq.o Booting a mainline kernel with tegra-devfreq enabled will hang my machine during bootup when I use the u-boot from R21.4 (which I believe is the latest provided by NVIDIA). -- Martin Michlmayr http://www.cyrius.com/