linux-kernel - Re: [PATCH v8 2/3] drm/panel: Add support for S6E3HA2 panel driver on TM2 board

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Message-ID: <CAJKOXPeCF3+YXk-GHmewn6fi0rcPbQ_GoPOeFRP2KYN=6KLLxw@mail.gmail.com>
Date:   Tue, 31 Jan 2017 12:01:22 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Inki Dae <inki.dae@...sung.com>
Cc:     Hoegeun Kwon <hoegeun.kwon@...sung.com>, thierry.reding@...il.com,
        robh@...nel.org, airlied@...ux.ie, kgene@...nel.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        a.hajda@...sung.com, Chanwoo Choi <cw00.choi@...sung.com>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Andi Shyti <andi.shyti@...sung.com>,
        Donghwa Lee <dh09.lee@...sung.com>,
        Hyungwon Hwang <human.hwang@...sung.com>
Subject: Re: [PATCH v8 2/3] drm/panel: Add support for S6E3HA2 panel driver on
 TM2 board

On Tue, Jan 31, 2017 at 11:34 AM, Inki Dae <inki.dae@...sung.com> wrote:
>
>
> 2017년 01월 31일 18:22에 Krzysztof Kozlowski 이(가) 쓴 글:
>> On Tue, Jan 31, 2017 at 2:01 AM, Inki Dae <inki.dae@...sung.com> wrote:
>>>
>>>
>>> 2017년 01월 24일 10:50에 Hoegeun Kwon 이(가) 쓴 글:
>>>> Dear Thierry,
>>>>
>>>> Could you please review this patch?
>>>
>>> Thierry, I think this patch has been reviewed enough but no comment from you. Seems you are busy. I will pick up this.
>>>
>>
>> Comments from v8 were not resolved and I think we are waiting for v9:
>> https://lkml.org/lkml/2017/1/11/178
>>
>> If that is not correct then please clarify.
>
> Seems you pointed to change te-gpios bindings to optional. right?
>
> I thought Rob left ack so it's no problem.
> https://lkml.org/lkml/2017/1/13/626

Yes, change them to optional. I think it is a problem (regardless of
Rob's ack) because you are merging a driver requiring a property which
soon you want to remove. If you merge it (like this) removal of
te-gpios property will be breakage of ABI. This is not a serious
problem but knowing such plan of te-gpios removal upfront, it would be
wrong to commit such driver.

Best regards,
Krzysztof