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Message-ID: <55EBA945.3020501@huawei.com>
Date: Sun, 6 Sep 2015 10:47:33 +0800
From: Ding Tianhong <dingtianhong@...wei.com>
To: Marc Zyngier <marc.zyngier@....com>
CC: <linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <catalin.marinas@....com>,
<will.deacon@....com>, <devicetree@...r.kernel.org>,
<robh+dt@...nel.org>, <pawel.moll@....com>, <mark.rutland@....com>,
<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
<rob.herring@...aro.org>, <haojian.zhuang@...aro.org>,
<zhangfei.gao@...aro.org>, <xuwei5@...ilicon.com>,
<leo.yan@...aro.org>, <zhizhou.zh@...il.com>, <linuxarm@...wei.com>
Subject: Re: [PATCH 2/2] arm64: dts: add dts files for Hisilicon Hip05-D02
Development Board
On 2015/9/5 17:28, Marc Zyngier wrote:
> On Sat, 5 Sep 2015 10:58:59 +0800
> Ding Tianhong <dingtianhong@...wei.com> wrote:
>
>> Add initial dtsi file to support Hisilicon Hip05-D02 Board with
>> support of CPUs in four clusters and each cluster has quard Cortex-A57.
>>
>> Also add dts file to support Hip05-D02 development board.
>>
>> Signed-off-by: Ding Tianhong <dingtianhong@...wei.com>
>> Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
>> ---
>> arch/arm64/boot/dts/hisilicon/Makefile | 2 +-
>> arch/arm64/boot/dts/hisilicon/hip05-d02.dts | 36 ++++
>> arch/arm64/boot/dts/hisilicon/hip05.dtsi | 271 ++++++++++++++++++++++++++++
>> 3 files changed, 308 insertions(+), 1 deletion(-)
>> create mode 100644 arch/arm64/boot/dts/hisilicon/hip05-d02.dts
>> create mode 100644 arch/arm64/boot/dts/hisilicon/hip05.dtsi
>>
>> diff --git a/arch/arm64/boot/dts/hisilicon/Makefile b/arch/arm64/boot/dts/hisilicon/Makefile
>> index fa81a6e..cd158b8 100644
>> --- a/arch/arm64/boot/dts/hisilicon/Makefile
>> +++ b/arch/arm64/boot/dts/hisilicon/Makefile
>> @@ -1,4 +1,4 @@
>> -dtb-$(CONFIG_ARCH_HISI) += hi6220-hikey.dtb
>> +dtb-$(CONFIG_ARCH_HISI) += hi6220-hikey.dtb hip05-d02.dtb
>>
>> always := $(dtb-y)
>> subdir-y := $(dts-dirs)
>> diff --git a/arch/arm64/boot/dts/hisilicon/hip05-d02.dts b/arch/arm64/boot/dts/hisilicon/hip05-d02.dts
>> new file mode 100644
>> index 0000000..ae34e25
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/hisilicon/hip05-d02.dts
>> @@ -0,0 +1,36 @@
>> +/**
>> + * dts file for Hisilicon D02 Development Board
>> + *
>> + * Copyright (C) 2014,2015 Hisilicon Ltd.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License version 2 as
>> + * publishhed by the Free Software Foundation.
>> + *
>> + */
>> +
>> +/dts-v1/;
>> +
>> +#include "hip05.dtsi"
>> +
>> +/ {
>> + model = "Hisilicon Hip05 D02 Development Board";
>> + compatible = "hisilicon,hip05-d02";
>> +
>> + memory@...00000 {
>> + device_type = "memory";
>> + reg = <0x0 0x00000000 0x0 0x80000000>;
>> + };
>> +
>> + aliases {
>> + serial0 = &uart0;
>> + };
>> +
>> + chosen {
>> + stdout-path = "serial0:115200n8";
>> + };
>> +};
>> +
>> +&uart0 {
>> + status = "ok";
>> +};
>> diff --git a/arch/arm64/boot/dts/hisilicon/hip05.dtsi b/arch/arm64/boot/dts/hisilicon/hip05.dtsi
>> new file mode 100644
>> index 0000000..92d00f4
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/hisilicon/hip05.dtsi
>> @@ -0,0 +1,271 @@
>> +/**
>> + * dts file for Hisilicon D02 Development Board
>> + *
>> + * Copyright (C) 2014,2015 Hisilicon Ltd.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License version 2 as
>> + * publishhed by the Free Software Foundation.
>> + *
>> + */
>> +
>> +#include <dt-bindings/interrupt-controller/arm-gic.h>
>> +
>> +/ {
>> + compatible = "hisilicon,hip05-d02";
>> + interrupt-parent = <&gic>;
>> + #address-cells = <2>;
>> + #size-cells = <2>;
>> +
>> + psci {
>> + compatible = "arm,psci-0.2";
>> + method = "smc";
>> + };
>> +
>> + cpus {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + cpu-map {
>> + cluster0 {
>> + core0 {
>> + cpu = <&cpu0>;
>> + };
>> + core1 {
>> + cpu = <&cpu1>;
>> + };
>> + core2 {
>> + cpu = <&cpu2>;
>> + };
>> + core3 {
>> + cpu = <&cpu3>;
>> + };
>> + };
>> + cluster1 {
>> + core0 {
>> + cpu = <&cpu4>;
>> + };
>> + core1 {
>> + cpu = <&cpu5>;
>> + };
>> + core2 {
>> + cpu = <&cpu6>;
>> + };
>> + core3 {
>> + cpu = <&cpu7>;
>> + };
>> + };
>> + cluster2 {
>> + core0 {
>> + cpu = <&cpu8>;
>> + };
>> + core1 {
>> + cpu = <&cpu9>;
>> + };
>> + core2 {
>> + cpu = <&cpu10>;
>> + };
>> + core3 {
>> + cpu = <&cpu11>;
>> + };
>> + };
>> + cluster3 {
>> + core0 {
>> + cpu = <&cpu12>;
>> + };
>> + core1 {
>> + cpu = <&cpu13>;
>> + };
>> + core2 {
>> + cpu = <&cpu14>;
>> + };
>> + core3 {
>> + cpu = <&cpu15>;
>> + };
>> + };
>> + };
>> +
>> + cpu0: cpu@...00 {
>> + device_type = "cpu";
>> + compatible = "hisilicon,hip05", "arm,armv8";
>
> Your cover letter says: "Hip05-D02 Development Board is based on
> Cortex-A57". So "hisilicon,hip05" has nothing to do here. This should
> read "arm,cortex-a57" (the SoC name is irrelevant for a cpu node).
>
> Apparently I'm not the first one to mention that to you, so please
> address this in your next version.
>
Ok.
> [...]
>
>> + gic: interrupt-controller@...00000 {
>> + compatible = "arm,gic-v3";
>> + #interrupt-cells = <3>;
>> + #address-cells = <2>;
>> + #size-cells = <2>;
>> + ranges;
>> + interrupt-controller;
>> + #redistributor-regions = <1>;
>> + redistributor-stride = <0x0 0x30000>;
>
> Really? You redistributors are 192kB apart?
Yes, our chip need 192kb for GICR.
>
>> + reg = <0x0 0x8d000000 0 0x10000>, /* GICD */
>> + <0x0 0x8d100000 0 0x300000>, /* GICR */
>> + <0x0 0xfe000000 0 0x10000>, /* GICC */
>> + <0x0 0xfe010000 0 0x10000>, /* GICH */
>> + <0x0 0xfe020000 0 0x10000>; /* GICV */
>> + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
>> +
>> + its_totems: interrupt-controller@...00000 {
>> + compatible = "arm,gic-v3-its";
>> + msi-controller;
>> + reg = <0x0 0x8c000000 0x0 0x1000000>;
>
> Why is the ITS region that big? It should normally only be 128kB.
>
Yes, No need to reserve so big memory for ITS, actually 256kb is enough, fix it in next version, thanks.
Ding
> Thanks,
>
> M.
>
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