linux-kernel - Re: [PATCH v2 06/11] dt-bindings: timer: Add Sophgo sg2042 clint

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Message-ID: <66b988f0-39fc-2ed3-8f38-151d6a3c9e52@linaro.org>
Date:   Wed, 20 Sep 2023 14:30:42 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Inochi Amaoto <inochiama@...look.com>
Cc:     aou@...s.berkeley.edu, chao.wei@...hgo.com, conor@...nel.org,
        evicetree@...r.kernel.org, emil.renner.berthing@...onical.com,
        guoren@...nel.org, jszhang@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, palmer@...belt.com,
        paul.walmsley@...ive.com, robh+dt@...nel.org,
        xiaoguang.xing@...hgo.com, Chen Wang <wangchen20@...as.ac.cn>
Subject: Re: [PATCH v2 06/11] dt-bindings: timer: Add Sophgo sg2042 clint

On 20/09/2023 14:15, Inochi Amaoto wrote:
>> On 20/09/2023 08:39, Chen Wang wrote:
>>> From: Inochi Amaoto <inochiama@...look.com>
>>>
>>> Add two new compatible string formatted like `C9xx-clint-xxx` to identify
>>> the timer and ipi device separately, and do not allow c900-clint as the
>>
>> Why?
>>
> 
> If use the same compatible, SBI will process this twice in both ipi and
> timer, use different compatible will allow SBI to treat these as different.
> AFAIK, the aclint in SBI use the same concepts, which make hard to use the
> second register range. I have explained in another response.

What is a SBI? Linux driver? If so, why some intermediate Linux driver
choice should affect bindings?
Best regards,
Krzysztof