linux-kernel - Re: [PATCH v1 0/9] Fix Allwinner D1 boot regression

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Message-ID: <87ed6pn7h6.ffs@tglx>
Date: Thu, 15 Aug 2024 17:14:45 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Samuel Holland <samuel.holland@...ive.com>, Anup Patel
 <apatel@...tanamicro.com>, Emil Renner Berthing
 <emil.renner.berthing@...onical.com>
Cc: linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, Paul
 Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>,
 Albert Ou <aou@...s.berkeley.edu>, Daniel Lezcano
 <daniel.lezcano@...aro.org>
Subject: Re: [PATCH v1 0/9] Fix Allwinner D1 boot regression

On Thu, Aug 15 2024 at 09:41, Samuel Holland wrote:
> On 2024-08-15 9:16 AM, Anup Patel wrote:
>> Almost all RISC-V platforms (except this one) have SBI Timer always
>> available and Linux uses a better timer or Sstc extension whenever
>> it is available.
>
> So this is the immediate solution: add the CLINT to the firmware
> devicetree so that the SBI time extension works, and Linux will boot
> without any code changes, albeit with a higher-overhead clockevent
> device.

That does not matter for the boot process when the sun4i timer becomes
available afterwards. But how can this be retrofitted along with the
kernel update?

Thanks,

        tglx