linux-kernel - Re: [PATCH v4 1/5] dt-bindings: add SMP enable-method for Broadcom NSP

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Message-ID: <5660B1B5.5000702@gmail.com>
Date:	Thu, 03 Dec 2015 13:18:45 -0800
From:	Florian Fainelli <f.fainelli@...il.com>
To:	Kapil Hali <kapilh@...adcom.com>, Rob Herring <robh@...nel.org>
CC:	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Ray Jui <rjui@...adcom.com>,
	Scott Branden <sbranden@...adcom.com>,
	Jon Mason <jonmason@...adcom.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Gregory Fong <gregory.0xf0@...il.com>,
	Lee Jones <lee@...nel.org>, Hauke Mehrtens <hauke@...ke-m.de>,
	Kever Yang <kever.yang@...k-chips.com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Olof Johansson <olof@...om.net>,
	Paul Walmsley <paul@...an.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Chen-Yu Tsai <wens@...e.org>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	bcm-kernel-feedback-list@...adcom.com
Subject: Re: [PATCH v4 1/5] dt-bindings: add SMP enable-method for Broadcom
 NSP

On 02/12/15 08:06, Kapil Hali wrote:
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/arm/bcm/brcm,nsp-cpu-method.txt
>>> @@ -0,0 +1,39 @@
>>> +Broadcom Northstar Plus SoC CPU Enable Method
>>> +---------------------------------------------
>>> +This binding defines the enable method used for starting secondary
>>> +CPUs in the following Broadcom SoCs:
>>> +  BCM58522, BCM58525, BCM58535, BCM58622, BCM58623, BCM58625, BCM88312
>>> +
>>> +The enable method is specified by defining the following required
>>> +properties in the "cpus" device tree node:
>>> +  - enable-method = "brcm,bcm-nsp-smp";
>>> +  - secondary-boot-reg = <...>;
>>
>> Both of these are supposed to be per cpu core.
> 
> 'enable-method' if not found in 'cpu' node is looked at in the 'cpus' 
> node. Except for two-three SoC families, 'enable-method' is within 
> 'cpus' node. Is my interpretation incorrect? Did I miss anything here?

So, what do we do from here? I would appreciate a timely answer from the
DT maintainers here so we can decide on the fate of this patch series
for 4.5.

Thank you
-- 
Florian
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