linux-kernel - Re: [PATCH v5 0/8] mmc: sdhci-of-dwcmshc: Add Sophgo SG2042 support

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Message-ID:
 <PN1P287MB281813D2CE721D2D8E697A52FEAB2@PN1P287MB2818.INDP287.PROD.OUTLOOK.COM>
Date: Thu, 25 Jul 2024 09:36:07 +0800
From: Chen Wang <unicorn_wang@...look.com>
To: Drew Fustini <drew@...7.com>, Chen Wang <unicornxw@...il.com>
Cc: adrian.hunter@...el.com, aou@...s.berkeley.edu, conor+dt@...nel.org,
 guoren@...nel.org, inochiama@...look.com, jszhang@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, palmer@...belt.com,
 paul.walmsley@...ive.com, robh@...nel.org, ulf.hansson@...aro.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-mmc@...r.kernel.org, linux-riscv@...ts.infradead.org,
 chao.wei@...hgo.com, haijiao.liu@...hgo.com, xiaoguang.xing@...hgo.com,
 tingzhu.wang@...hgo.com
Subject: Re: [PATCH v5 0/8] mmc: sdhci-of-dwcmshc: Add Sophgo SG2042 support


On 2024/7/25 5:09, Drew Fustini wrote:
> On Fri, Jul 19, 2024 at 04:44:38PM +0800, Chen Wang wrote:
>> From: Chen Wang <unicorn_wang@...look.com>
>>
>> This patchset is composed of two parts:
>> - one is the improvement of the sdhci-of-dwcmshc framework,
>> - the other is the support for sg2042 based on the improvement of the
>>    framework.
>> The reason for merging the two parts into one patchset is mainly to
>> facilitate review, especially to facilitate viewing why we need to
>> improve the framework and what benefits it will bring to us.
>>
>> When I tried to add a new soc(SG2042) to sdhci-of-dwcmshc, I found
>> that the existing driver code could be optimized to facilitate expansion
>> for the new soc. Patch 1 ~ Patch 5 is for this.
>>
>> Patch 6 ~ 7 are adding support for the mmc controller for Sophgo SG2042.
>> Adding corresponding new compatible strings, and implement
>> custom callbacks for SG2042 based on new framework.
>>
>> Patch 8 is the change for DTS.
>>
>> By the way, although I believe this patch only optimizes the framework
>> of the code and does not change the specific logic, simple verification
>> is certainly better. Since I don't have rk35xx/th1520 related hardware,
>> it would be greatly appreciated if someone could help verify it.
>> Note, the DTS change has dependency on clock changes for SG2042, which
>> has not been merged in master/upstream, so if you want to test this
>> new sdhci-of-dwcmshc driver for other hardware except SG2042, don't
>> pick patch 8.
> I have tested this on the LicheePi 4a and found no issues.
>
> Tested-by: Drew Fustini <drew@...7.com> # TH1520
>
> -Drew

Thank you Drew，you are always the best! :)

Regards,

Chen