linux-kernel - Re: [RFC PATCH 2/2] arm64: dts: add support for C3 based Amlogic AW409

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Date:   Mon, 1 May 2023 12:00:33 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     "xianwei.zhao" <xianwei.zhao@...ogic.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Subject: Re: [RFC PATCH 2/2] arm64: dts: add support for C3 based Amlogic
 AW409

On 27/04/2023 10:54, xianwei.zhao wrote:
> Hi Krzysztof,
> 
>          Thank you for your reply.
> 
> On 2023/4/19 15:48, Krzysztof Kozlowski wrote:
>> [你通常不会收到来自krzysztof.kozlowski@...aro.org  的电子邮件。请访问https://aka.ms/LearnAboutSenderIdentification，以了解这一点为什么很重要]
>>
>> [ EXTERNAL EMAIL ]
>>
>> On 19/04/2023 09:38, =Xianwei Zhao wrote:
>>> From: Xianwei Zhao<xianwei.zhao@...ogic.com>
>>>
>>> Amlogic C3 is an advanced edge AI processor designed for smart IP camera
>>> applications.
>>>
>>> Add basic support for the C3 based Amlogic AW409 board, which describes
>>> the following components: CPU, GIC, IRQ, Timer, UART. It's capable of
>>> booting up into the serial console.
>>>
>>> Signed-off-by: Xianwei Zhao<xianwei.zhao@...ogic.com>
>>> ---
>>>   arch/arm64/boot/dts/amlogic/Makefile          |  1 +
>>>   .../amlogic/amlogic-c3-c302x-aw409-256m.dts   | 30 +++++++
>>>   arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi   | 87 +++++++++++++++++++
>>>   3 files changed, 118 insertions(+)
>>>   create mode 100644 arch/arm64/boot/dts/amlogic/amlogic-c3-c302x-aw409-256m.dts
>>>   create mode 100644 arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
>>>
>>> diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
>>> index cd1c5b04890a..d2b5d0d750bc 100644
>>> --- a/arch/arm64/boot/dts/amlogic/Makefile
>>> +++ b/arch/arm64/boot/dts/amlogic/Makefile
>>> @@ -74,3 +74,4 @@ dtb-$(CONFIG_ARCH_MESON) += meson-sm1-odroid-hc4.dtb
>>>   dtb-$(CONFIG_ARCH_MESON) += meson-sm1-sei610.dtb
>>>   dtb-$(CONFIG_ARCH_MESON) += meson-sm1-x96-air-gbit.dtb
>>>   dtb-$(CONFIG_ARCH_MESON) += meson-sm1-x96-air.dtb
>>> +dtb-$(CONFIG_ARCH_AMLIPC) += amlogic-c3-c302x-aw409-256m.dtb
>>> diff --git a/arch/arm64/boot/dts/amlogic/amlogic-c3-c302x-aw409-256m.dts b/arch/arm64/boot/dts/amlogic/amlogic-c3-c302x-aw409-256m.dts
>>> new file mode 100644
>>> index 000000000000..38ca98a32181
>>> --- /dev/null
>>> +++ b/arch/arm64/boot/dts/amlogic/amlogic-c3-c302x-aw409-256m.dts
>>> @@ -0,0 +1,30 @@
>>> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>>> +/*
>>> + * Copyright (c) 2021 Amlogic, Inc. All rights reserved.
>>> + */
>>> +
>>> +/dts-v1/;
>>> +
>>> +#include "amlogic-c3.dtsi"
>>> +
>>> +/ {
>>> +     model = "Amlogic C302 aw409 Development Board";
>>> +     compatible = "amlogic,aw409", "amlogic,c3";
>> Undocumented compatibles. Run checkpatch and fix all warnings. Anyway, I
>> am not sure this warrants separate architecture. Isn't C3 standard Meson
>> SoC?
> The patch related to bindings is committed, see: 
> https://lore.kernel.org/all/20230407102704.1055152-1-kelvin.zhang@amlogic.com/

And how can we know this? There are no bindings in next, so you are
supposed to sent these together. At minimum link to the bindings patch.

Otherwise you will keep getting review comments.

Best regards,
Krzysztof