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From: Martin Michlmayr <tbm-R+vWnYXSFMfQT0dZR+AlfA@public.gmane.org>
To: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Vagrant Cascadian <vagrant-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
Subject: Only 3.5 GB RAM on Jetson TX1
Date: Wed, 22 Mar 2017 17:13:57 -0700	[thread overview]
Message-ID: <20170323001357.GA7546@jirafa.cyrius.com> (raw)

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/

             reply	other threads:[~2017-03-23  0:13 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-23  0:13 Martin Michlmayr [this message]
     [not found] ` <20170323001357.GA7546-IRMp5PtgtdoigzW5ZibpNwC/G2K4zDHf@public.gmane.org>
2017-03-23 16:24   ` Only 3.5 GB RAM on Jetson TX1 Stephen Warren
     [not found]     ` <8453cf91-0b27-9968-59b8-7b697e8cd1f8-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2017-03-23 16:33       ` Stephen Warren
2017-03-24 19:55       ` Ralf Ramsauer
     [not found]         ` <b61c05f6-a088-a2c1-b512-fc7b3fca618e-ex4EvEgDZR1o7HI0AxOeTKwczVv4G7md@public.gmane.org>
2017-03-24 20:12           ` Stephen Warren

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