linux-kernel - Re: [PATCH 3/3] arm64: dts: nuvoton: Add initial support for MA35D1

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Message-ID: <70edfb84-fb04-9492-ba94-ba0781f1e8fe@nuvoton.com>
Date:   Thu, 7 Apr 2022 12:17:01 +0800
From:   Jacky Huang <ychuang3@...oton.com>
To:     Arnd Bergmann <arnd@...db.de>
CC:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mturquette@...libre.com" <mturquette@...libre.com>,
        "sboyd@...nel.org" <sboyd@...nel.org>,
        "olof@...om.net" <olof@...om.net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
        "soc@...nel.org" <soc@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 3/3] arm64: dts: nuvoton: Add initial support for MA35D1



On 2022/4/6 下午 05:40, Arnd Bergmann wrote:
> On Wed, Apr 6, 2022 at 11:25 AM Jacky Huang <ychuang3@...oton.com> wrote:
>> On 2022/4/6 下午 03:14, Krzysztof Kozlowski wrote:
>>> On 06/04/2022 04:58, Jacky Huang wrote:
>>>> config ARCH_MA35D1
>>>>        bool "Nuvoton MA35D1 SOC Family"
>>> We do not add options for specific SoCs, but for entire families, so
>>> ARCH_NUVOTON is correct.
>> Yes, I would like to modify it as the following:
>>
>> config ARCH_NUVOTON
>>       bool "Nuvoton SoC Family"
>>       select PINCTRL
>>       select PINCTRL_MA35D1
>>       select PM
>>       select GPIOLIB
>>       select SOC_BUS
>>       help
>>         This enables support for Nuvoton MA35D1 ARMv8 SoC.
>>
>> (Currently, we have MA35D1 only in the support list for arm64 SoC.).
> You could reword this to "This enables support for Nuvoton ARMv8 SoCs
> such as the MA35D1", to prevent this from getting stale, or repeatedly
> updated when future SoCs are added.
>
> Another change you can consider is to remove the 'select PINCTRL_MA35D1'
> here and instead change the pinctrl Kconfig entry to
>
> config PINCTRL_MA35D1
>             bool "..."
>             depends on ARCH_NUVOTON || COMPILE_TEST
>             default ARCH_NUVOTON
>
> That way you get it default-enabled when ARCH_NUVOTON is
> turned on, or disabled in configurations without ARCH_NUVOTON,
> but can make a more fine-grained selection for a particular SoC
> if you get more than one such driver in the future.
>
>          Arnd

Yes, it looks better.
So, I will modify it as:

config ARCH_NUVOTON
     bool "Nuvoton SoC Family"
     select PINCTRL
     select PM
     select GPIOLIB
     select SOC_BUS
     help
       This enables support for Nuvoton MA35D1 ARMv8 SoC such as MA35D1.

And move PINCTRL_MA35D1 to pinctrl Kconfig when we submit the pictrl 
driver.

Thanks you.

Jacky