From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Michlmayr Subject: Only 1 CPU on Jetson TX1 Date: Wed, 22 Mar 2017 17:11:31 -0700 Message-ID: <20170323001131.GA7507@jirafa.cyrius.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Vagrant Cascadian List-Id: linux-tegra@vger.kernel.org Vagrant Cascadian observed that only 1 CPU is activated on the Jetson TX1 development kit. I can confirm this with mainline Linux and u-boot from mainline (2016.11) or L4T (2016.03-00633-g3ef9cdb from R23.2). I see the following in dmesg: [ 0.000000] /cpus/cpu@1: missing enable-method property [ 0.000000] /cpus/cpu@2: missing enable-method property [ 0.000000] /cpus/cpu@3: missing enable-method property [ 0.052643] Tegra Revision: A02 SKU: 23 CPU Process: 0 SoC Process: -22 [ 0.053149] EFI services will not be available. [ 0.053316] Brought up 1 CPUs [ 0.053325] SMP: Total of 1 processors activated. [ 0.053341] CPU: All CPU(s) started at EL2 -- Martin Michlmayr http://www.cyrius.com/