linux-kernel - Re: [PATCH v9 01/10] arm64: Kconfig.platforms: Add config for Nuvoton MA35 platform

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Message-ID: <1f97c5a6-7c28-8582-a820-c33304a1801c@gmail.com>
Date:   Thu, 4 May 2023 16:00:16 +0800
From:   Jacky Huang <ychuang570808@...il.com>
To:     Arnd Bergmann <arnd@...db.de>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        krzysztof.kozlowski+dt@...aro.org, Lee Jones <lee@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Tomer Maimon <tmaimon77@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Cc:     devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-serial@...r.kernel.org, schung@...oton.com,
        mjchen@...oton.com, Jacky Huang <ychuang3@...oton.com>
Subject: Re: [PATCH v9 01/10] arm64: Kconfig.platforms: Add config for Nuvoton
 MA35 platform



On 2023/5/4 下午 03:49, Arnd Bergmann wrote:
> On Thu, May 4, 2023, at 08:32, Krzysztof Kozlowski wrote:
>> On 04/05/2023 05:37, Jacky Huang wrote:
>>> From: Jacky Huang <ychuang3@...oton.com>
>>>
>>> Add ARCH_NUVOTON configuration option for Nuvoton MA35 family SoCs.
>>>
>>> Signed-off-by: Jacky Huang <ychuang3@...oton.com>
>>> ---
>>>   arch/arm64/Kconfig.platforms | 9 +++++++++
>>>   1 file changed, 9 insertions(+)
>>>
>>> diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
>>> index 89a0b13b058d..c1f277c05569 100644
>>> --- a/arch/arm64/Kconfig.platforms
>>> +++ b/arch/arm64/Kconfig.platforms
>>> @@ -236,6 +236,15 @@ config ARCH_NPCM
>>>   	  General support for NPCM8xx BMC (Arbel).
>>>   	  Nuvoton NPCM8xx BMC based on the Cortex A35.
>>>   
>>> +config ARCH_NUVOTON
>> Either this should be ARCH_MA35 or you should integrate it with NPCM.
>> ARCH_NUVOTON means all Nuvoton platforms.
> I'd go with two separate Kconfig options here (ARCH_MA35 and ARCH_NPCM)
> for arm64, but keep the shared arch/arm64/boot/dts/nuvoton directory,
> I think that fits most closely what we do on other targets, and there
> is apparently very little sharing of IP blocks between npcm and ma35,
> if any.
>
>        Arnd

Dear Arnd and Krzysztof,

Thank you for your suggestion, it really helped me. We are also considering
whether to use ARCH_MA35. As NPCM and MA35 are designed for different
application areas, it is unlikely that they would be used simultaneously.
Therefore, it would be more reasonable to separate them into ARCH_NPCM and
ARCH_MA35. In the next version, v10, we will change all instances of
ARCH_NUVOTON in this patchset to ARCH_MA35 and keep shared directory 
changed.


Best Regards,
Jacky Huang