From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Michlmayr Subject: Only 3.5 GB RAM on Jetson TX1 Date: Wed, 22 Mar 2017 17:13:57 -0700 Message-ID: <20170323001357.GA7546@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 3.5 GB RAM are available on the Jetson TX1 development kit. [ 0.000000] Memory: 3501036K/3670016K available (6780K kernel code, 1020K rwdata, 2164K rodata, 3264K init, 634K bss, 168980K reserved, 0K cma-reserved) Interestingly, even u-boot only shows 3.5 GB: DRAM: 3.5 GiB This is with mainline u-boot 2016.11 and R23.2 (2016.03-00633-g3ef9cdb). However, 2015.07-rc2-g78c8468 (from R23.1.1) shows: DRAM: 4 GiB but that u-boot doesn't boot mainline kernels (some DT errors). -- Martin Michlmayr http://www.cyrius.com/