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Subject: Re: [PATCH] mtd: rawnand: denali_dt: remove single anonymous clock
 support
To:     Miquel Raynal <miquel.raynal@bootlin.com>,
        Boris Brezillon <bbrezillon@kernel.org>
Cc:     Richard Weinberger <richard@nod.at>,
        Masahiro Yamada <yamada.masahiro@socionext.com>,
        Marek Vasut <marek.vasut@gmail.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Boris Brezillon <boris.brezillon@bootlin.com>,
        linux-mtd <linux-mtd@lists.infradead.org>,
        Brian Norris <computersforpeace@gmail.com>,
        David Woodhouse <dwmw2@infradead.org>
References: <1547539894-12898-1-git-send-email-yamada.masahiro@socionext.com>
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From:   Dinh Nguyen <dinguyen@kernel.org>
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Message-ID: <ea245b53-59c9-0d7f-f33a-44aa93db99ac@kernel.org>
Date:   Thu, 7 Feb 2019 12:17:50 -0600
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On 2/5/19 7:18 AM, Miquel Raynal wrote:
> Hi Dinh,
> 
> Boris Brezillon <bbrezillon@kernel.org> wrote on Thu, 31 Jan 2019
> 18:26:44 +0100:
> 
>> Hi Dinh,
>>
>> On Thu, 31 Jan 2019 11:24:16 -0600
>> Dinh Nguyen <dinguyen@kernel.org> wrote:
>>
>>> On 1/28/19 4:20 AM, Miquel Raynal wrote:  
>>>> Hi Dinh,
>>>>
>>>> Masahiro Yamada <yamada.masahiro@socionext.com> wrote on Wed, 16 Jan
>>>> 2019 10:27:11 +0900:
>>>>     
>>>>> (+CC Dinh Nguyen)
>>>>>
>>>>> On Tue, Jan 15, 2019 at 5:22 PM Miquel Raynal <miquel.raynal@bootlin.com> wrote:    
>>>>>>
>>>>>> Hi Masahiro,
>>>>>>
>>>>>> Masahiro Yamada <yamada.masahiro@socionext.com> wrote on Tue, 15 Jan
>>>>>> 2019 17:11:34 +0900:
>>>>>>      
>>>>>>> Commit 6f1fe97bec34 ("mtd: rawnand: denali_dt: add more clocks based
>>>>>>> on IP datasheet") introduced a more correct binding that requires
>>>>>>> three named clocks.
>>>>>>>
>>>>>>> Now that all upstream DT files migrated over to it, remove the single
>>>>>>> anonymous clock support.      
>>>>>>
>>>>>> I would love to do that but I think this is against the "DT backward
>>>>>> compatibility rule".      
>>>>>
>>>>> Yeah, I know this rule, but we break DT binding from time to time.
>>>>>
>>>>>
>>>>>    
>>>>>> Anyway, IIRC it is accepted that this kind of
>>>>>> rule might be broken if decided per the arch-maintainer (in this
>>>>>> case, you I suppose). So if this is really what you want, I'll queue
>>>>>> it.      
>>>>>
>>>>> My platform is fine, but this driver is used by SOCFPGA boards as well.
>>>>>
>>>>> I CCed the SOCFPGA maintainer, Dinh Nguyen.
>>>>>    
>>>>
>>>> Gentle ping on this topic.
>>>>     
>>>
>>> This patch looks fine to be. Feel free to add:
>>>
>>> Tested-by: Dinh Nguyen <dinguyen@kernel.org>  
>>
>> I think Miquel is waiting for an Acked-by to confirm that you're okay
>> breaking backward compat with old DT.
> 
> Yes, I am waiting for your Acked-by.
> 
> 

Acked-by: Dinh Nguyen <dinguyen@kernel.org>

Dinh