linux-kernel - Re: [PATCH v2 12/12] riscv: defconfig: Enable the Allwinner D1 platform and drivers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <6aad3b63-498e-b13a-af49-b5af0d4e721e@kernel.org>
Date:   Mon, 28 Nov 2022 21:17:38 +0000
From:   Conor Dooley <conor@...nel.org>
To:     Heiko Stübner <heiko@...ech.de>,
        Samuel Holland <samuel@...lland.org>, palmer@...belt.com
Cc:     Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        linux-sunxi@...ts.linux.dev, linux-riscv@...ts.infradead.org,
        devicetree@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Jisheng Zhang <jszhang@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Andre Przywara <andre.przywara@....com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Anup Patel <apatel@...tanamicro.com>,
        Atish Patra <atishp@...osinc.com>,
        Christian Hewitt <christianshewitt@...il.com>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Guo Ren <guoren@...nel.org>,
        Heinrich Schuchardt <heinrich.schuchardt@...onical.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Stanislav Jakubek <stano.jakubek@...il.com>
Subject: Re: [PATCH v2 12/12] riscv: defconfig: Enable the Allwinner D1
 platform and drivers

On 28/11/2022 21:11, Heiko Stübner wrote:
> Am Samstag, 26. November 2022, 17:40:11 CET schrieb Conor Dooley:
>> On Fri, Nov 25, 2022 at 05:46:56PM -0600, Samuel Holland wrote:
>>> Now that several D1-based boards are supported, enable the platform in
>>> our defconfig. Build in the drivers which are necessary to boot, such as
>>> the pinctrl, MMC, RTC (which provides critical clocks), SPI (for flash),
>>> and watchdog (which may be left enabled by the bootloader).
>>
>> All of that looks good.
>>
>>> Other common
>>> onboard peripherals are enabled as modules.
>>
>> This I am not sure about though. I'll leave that to Palmer since I'm
>> pretty sure it was him that said it, but I thought the plan was only
>> turning on stuff required to boot to a console & things that are
>> generally useful rather than enabling modules for everyone's "random"
>> drivers. Palmer?
> 
> Isn't the defconfig meant as a starting point to get working systems
> with minimal config effort? At least that was always the way to go on arm
> so far :-) .
> 
> So having boot-required drivers built-in with the rest enabled as modules
> for supported boards will allow people to boot theirs without headaches.
> 
> Disabling unneeded drivers if you're starved for storage space in a special
> project is always easier than hunting down all the drivers to enable for a
> specific board. 

I wouldn't mind being able to turn on all the PolarFire SoC stuff and
yeah, that would be the way that arm64 does it. But I do recall hearing
that I should not turn stuff on this way, when I initially tried to
turn stuff on via selects, got a nack and asked if I could do this instead.

But it may be that I misremember, which is why I appealed to the Higher
Powers for clarification :)