linux-kernel - Re: [PATCH v5 1/6] ARM: cygnus: Initial support for Broadcom Cygnus SoC

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Message-ID: <5447E56D.6000006@broadcom.com>
Date:	Wed, 22 Oct 2014 10:12:13 -0700
From:	Scott Branden <sbranden@...adcom.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	Christian Daudt <bcm@...thebug.org>,
	Matt Porter <mporter@...aro.org>,
	Russell King <linux@....linux.org.uk>,
	<bcm-kernel-feedback-list@...adcom.com>,
	Mike Turquette <mturquette@...aro.org>,
	Alex Elder <elder@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	"Kumar Gala" <galak@...eaurora.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Joe Perches <joe@...ches.com>,
	"Mauro Carvalho Chehab" <m.chehab@...sung.com>,
	Antti Palosaari <crope@....fi>,
	JD Zheng <jdzheng@...adcom.com>, Ray Jui <rjui@...adcom.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	Jonathan Richardson <jonathar@...adcom.com>
Subject: Re: [PATCH v5 1/6] ARM: cygnus: Initial support for Broadcom Cygnus
 SoC

On 14-10-22 01:22 AM, Arnd Bergmann wrote:
> On Tuesday 21 October 2014 17:11:08 Scott Branden wrote:
>> OK, I will remove the "iProc SoC based Machine types".  This was
>> grouping all iProc based SoCs under one menu and parallels what the
>> existing "Broadcom Mobile Soc Support" menu does.
>>
>> I can create another patch removing the "Broadcom Mobile SoC Support"
>> menu if the ARM Maintainer now want all Broadcom devices are supposed to
>> be contained in a single level?
>
> Sounds good, I missed that other menu going in.
I will add another patch to my set to correct this.
>
> It can make sense to add 'comment' statements if you want to separate the
> families.
Thanks - I will add this to my patchset.
>
> I also noticed that there are a few configuration options that at first
> seem pointless: ARCH_BCM_MOBILE_L2_CACHE and ARCH_BCM_MOBILE_SMP. I wonder
> if it ever makes sense to disable these when the common options (CACHE_L2X0
> and SMP) are enabled for another SoC. I'd normally like to see these as
> hidden options that are always on whenever the core support for those
> features is enabled, to avoid confusing users as well as bugs from the
> combinatorial explosion.
I can clean up all but ARCH_BCM_MOBILE_L2_CACHE.  This one is 
intertwined with SMC support and it looks like they want the option to 
turn on and off this feature.  This L2/Trustzone support will need to be 
cleaned up at a later time.  I heard Russell King says the PL310 cache 
code will be changing again soon.  When I add PL310 Trustzone support 
for the Cygnus SoC I can have a look at cleaning it up for the 
Mobile/Kona base SoCs at the same time.
>
> 	Arnd
>

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