linux-kernel - Re: [RFC][PATCH 3/4] arm64: dts: hikey: Add hikey support for syscon-reboot-mode

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Message-ID: <57ADD052.9030000@hisilicon.com>
Date:	Fri, 12 Aug 2016 14:34:10 +0100
From:	Wei Xu <xuwei5@...ilicon.com>
To:	John Stultz <john.stultz@...aro.org>,
	Bjorn Andersson <bjorn.andersson@...aro.org>
CC:	lkml <linux-kernel@...r.kernel.org>,
	Andy Yan <andy.yan@...k-chips.com>,
	Haojian Zhuang <haojian.zhuang@...aro.org>,
	Guodong Xu <guodong.xu@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	"Will Deacon" <will.deacon@....com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>
Subject: Re: [RFC][PATCH 3/4] arm64: dts: hikey: Add hikey support for
 syscon-reboot-mode

Hi All,

On 10/08/2016 05:58, John Stultz wrote:
> On Tue, Aug 9, 2016 at 9:34 PM, Bjorn Andersson
> <bjorn.andersson@...aro.org> wrote:
>> On Mon 08 Aug 16:03 PDT 2016, John Stultz wrote:
>>
>> [..]
>>> diff --git a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
>> [..]
>>>       memory@0 {
>>>               device_type = "memory";
>>>               reg = <0x00000000 0x00000000 0x00000000 0x05e00000>,
>>> -                   <0x00000000 0x05f00000 0x00000000 0x00eff000>,
>>> +                   <0x00000000 0x05f00000 0x00000000 0x00001000>,
>>> +                   <0x00000000 0x05f02000 0x00000000 0x00efd000>,
>>>                     <0x00000000 0x06e00000 0x00000000 0x0060f000>,
>>>                     <0x00000000 0x07410000 0x00000000 0x36bf0000>;
>>>       };
>>
>> As I said when talked about this, I don't think you should punch holes
>> in the /memory node, but rather add these regions as no-map in a
>> /reserved-memory node. But that's a unrelated matter.
> 
> Yea. I need to sync w/ Wei and Guodong to see about reworking all of
> those to use /reserved-memory, but for now I'd like to stay in sync w/
> how they have it setup.
> 

Both are fine to me.
I remember before we had a discussion [1].
How about we add these functions this time and clean the memory node
in the future if needed?

[1] http://patches.linaro.org/patch/54682/

Best Regards,
Wei

>>>
>>> +     reboot-mode-syscon@...1000 {
>>> +             compatible = "syscon", "simple-mfd";
>>> +             reg = <0x0 0x05f01000 0x0 0x00001000>;
>>> +
>>> +             reboot-mode@0 {
>>
>> Drop the @0
> 
> Will do.
> 
> 
>>
>> Other than that:
>> Acked-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> 
> Thanks!
> -john
> 
> .
>