linux-kernel - Re: [PATCH v2 0/8] Raspberry Pi 2 support.

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Date:	Fri, 18 Dec 2015 11:55:21 +0100
From:	Alexander Aring <alex.aring@...il.com>
To:	Eric Anholt <eric@...olt.net>
Cc:	linux-rpi-kernel@...ts.infradead.org,
	Mark Rutland <mark.rutland@....com>,
	devicetree@...r.kernel.org,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Florian Fainelli <f.fainelli@...il.com>,
	Jason Cooper <jason@...edaemon.net>,
	Scott Branden <sbranden@...adcom.com>,
	Marc Zyngier <marc.zyngier@....com>,
	Ray Jui <rjui@...adcom.com>, linux-kernel@...r.kernel.org,
	Rob Herring <robh+dt@...nel.org>,
	bcm-kernel-feedback-list@...adcom.com,
	Kumar Gala <galak@...eaurora.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 0/8] Raspberry Pi 2 support.

On Fri, Dec 18, 2015 at 11:08:26AM +0100, Alexander Aring wrote:
> Hi Eric,
> 
> On Wed, Dec 16, 2015 at 03:55:07PM -0800, Eric Anholt wrote:
> > This is a major rewrite of the previous Raspberry Pi 2 submission.
> > SMP support is now included, and the DT includes are cleaned up to
> > avoid massive duplication.
> > 
> > The branch (based on 4.4-rc5, to get the USB regression fixes) can be
> > found at:
> > 
> > https://github.com/anholt/linux/tree/bcm2836-4.4
> > 
> 
> thanks. :-)
> 
> I tried it via booting with the RPi firmware and your branch, but it
> doesn't boot on my side:
> 
> I get:
> 
> Uncompressing Linux... done, booting the kernel.
> [    0.000000] Booting Linux on physical CPU 0x0
> [    0.000000] Initializing cgroup subsys cpuset
> [    0.000000] Initializing cgroup subsys cpu
> [    0.000000] Initializing cgroup subsys cpuacct
> [    0.000000] Linux version 4.4.0-rc5+ (alex@...ga) (gcc version 4.9.2 (OSELAS.Toolchain-2014.12.1) ) #989 Fri Dec 18 10:54:40 CET 2015
> [    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c53c7d
> [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
> [    0.000000] Machine model: Raspberry Pi 2 Model B Rev 1.1
> [    0.000000] bootconsole [earlycon0] enabled
> [    0.000000] Truncating RAM at 0x00000000-0x3e000000 to -0x30000000
> [    0.000000] Consider using a HIGHMEM enabled kernel.
> [    0.000000] Memory policy: Data cache writeback
> [    0.000000] BUG: mapping for 0x3f201000 at 0xf0201000 out of vmalloc space
> [    0.000000] ------------[ cut here ]------------
> [    0.000000] WARNING: CPU: 0 PID: 0 at arch/arm/kernel/devtree.c:149 arm_dt_init_cpu_maps+0x100/0x1a4()
> [    0.000000] DT /cpu 2 nodes greater than max cores 1, capping them
> [    0.000000] Modules linked in:
> [    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.4.0-rc5+ #989
> [    0.000000] Hardware name: BCM2835

Because this, I thought I boot with the wrong devicetree. But then I saw
[0].

Can this not set to BCM2836 when I include "bcm2836.dtsi" and BCM2835,
when I include "bcm2835.dtsi"?

- Alex

https://github.com/anholt/linux/blob/bcm2836-4.4/arch/arm/boot/dts/bcm283x.dtsi#L12
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