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Date:	Sun, 12 Apr 2015 14:40:46 +0800
From:	Brent Wang <wangbintian@...il.com>
To:	Mark Rutland <mark.rutland@....com>,
	Marc Zyngier <marc.zyngier@....com>
Cc:	Bintian Wang <bintian.wang@...wei.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Will Deacon <Will.Deacon@....com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	Pawel Moll <Pawel.Moll@....com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	"galak@...eaurora.org" <galak@...eaurora.org>,
	"khilman@...aro.org" <khilman@...aro.org>,
	"mturquette@...aro.org" <mturquette@...aro.org>,
	"rob.herring@...aro.org" <rob.herring@...aro.org>,
	"zhangfei.gao@...aro.org" <zhangfei.gao@...aro.org>,
	"haojian.zhuang@...aro.org" <haojian.zhuang@...aro.org>,
	"xuwei5@...ilicon.com" <xuwei5@...ilicon.com>,
	"jh80.chung@...sung.com" <jh80.chung@...sung.com>,
	"olof@...om.net" <olof@...om.net>,
	"yanhaifeng@...il.com" <yanhaifeng@...il.com>,
	"sboyd@...eaurora.org" <sboyd@...eaurora.org>,
	"xuejiancheng@...wei.com" <xuejiancheng@...wei.com>,
	"sledge.yanwei@...wei.com" <sledge.yanwei@...wei.com>,
	"tomeu.vizoso@...labora.com" <tomeu.vizoso@...labora.com>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"guodong.xu@...aro.org" <guodong.xu@...aro.org>,
	"xuyiping@...ilicon.com" <xuyiping@...ilicon.com>,
	"wangbinghui@...ilicon.com" <wangbinghui@...ilicon.com>,
	"zhenwei.wang@...ilicon.com" <zhenwei.wang@...ilicon.com>,
	"victor.lixin@...ilicon.com" <victor.lixin@...ilicon.com>,
	"puck.chen@...ilicon.com" <puck.chen@...ilicon.com>,
	"dan.zhao@...ilicon.com" <dan.zhao@...ilicon.com>,
	"huxinwei@...wei.com" <huxinwei@...wei.com>,
	"z.liuxinliang@...wei.com" <z.liuxinliang@...wei.com>,
	"heyunlei@...wei.com" <heyunlei@...wei.com>,
	"kong.kongxinwei@...ilicon.com" <kong.kongxinwei@...ilicon.com>,
	"btw@...l.itp.ac.cn" <btw@...l.itp.ac.cn>,
	"w.f@...wei.com" <w.f@...wei.com>,
	"liguozhu@...ilicon.com" <liguozhu@...ilicon.com>
Subject: Re: [PATCH 3/3] arm64: dts: Add dts files for Hisilicon Hi6220 SoC

Hello Mark,

2015-02-06 16:42 GMT+08:00 Brent Wang <wangbintian@...il.com>:
[...]
>>
>>> +     gic: interrupt-controller@...00000 {
>>> +             compatible = "arm,gic-400", "arm,cortex-a15-gic";
>>
>> Surely there's no need for the "arm,cortex-a15-gic" fallback entry? What
>> am I missing?
> Remove it in next version.
After remove "arm,cortex-a15-gic", I get the following error during
kernel booting:
-----
kvm [1]: Using HYP init bounce page @396d9000
kvm [1]: error: no compatible GIC node found
kvm [1]: error initializing Hyp mode: -19
-----

Check code "virt/kvm/arm/vgic.c", gicv2 only "cortex-a15-gic" and
gicv3 support kvm now,
so I think we should keep it, how about your idea?

Thanks,

Bintian

>>
>>> +             reg = <0x0 0xf6801000 0x0 0x1000>, /* GICD */
>>
>> This doesn't match the unit-address.
> Do you mean change to "<0x0 0xf6801000 0 0x1000>" ?
>
>>
>>> +                   <0x0 0xf6802000 0x0 0x2000>, /* GICC */
>>> +                   <0x0 0xf6804000 0x0 0x2000>, /* GICH */
>>> +                   <0x0 0xf6806000 0x0 0x2000>; /* GICV */
>>
>> I guess no-one's bothered to consider 64k pages?
>>
>> Given GICH and GICV, I hope that this platform is booted at EL2?
> Transfer from EL3 to EL1 directly, keep these two just for future use.
>
>>
>>> +             #interrupt-cells = <3>;
>>> +             #address-cells = <0>;
>>> +             interrupt-controller;
>>> +     };
>>> +
>>> +
[...]
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