linux-kernel - Re: [PATCH v2 1/2] mfd: intel_quark_i2c_gpio: Use dmi_system

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Message-ID: <b9bfbb6b-f3b0-2aa4-6b66-f24890ab214b@siemens.com>
Date:   Mon, 22 May 2017 19:34:42 +0200
From:   Jan Kiszka <jan.kiszka@...mens.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Lee Jones <lee.jones@...aro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Sascha Weisenberger <sascha.weisenberger@...mens.com>
Subject: Re: [PATCH v2 1/2] mfd: intel_quark_i2c_gpio: Use dmi_system_id table
 for retrieving frequency

On 2017-05-22 19:26, Andy Shevchenko wrote:
> On Mon, May 22, 2017 at 8:25 PM, Jan Kiszka <jan.kiszka@...mens.com> wrote:
>> On 2017-05-22 19:20, Andy Shevchenko wrote:
>>> On Mon, May 22, 2017 at 8:18 PM, Jan Kiszka <jan.kiszka@...mens.com> wrote:
>>>> On 2017-05-22 19:12, Andy Shevchenko wrote:
>>>>> On Mon, May 22, 2017 at 1:53 PM, Jan Kiszka <jan.kiszka@...mens.com> wrote:
>>>>>> Avoids reimplementation of DMI matching in intel_quark_i2c_setup.
>>>>>
>>>>> What's wrong with current approach? I suppose this will make sense
>>>>> when we will have an issue / impediment. Right now it looks like
>>>>> over-engineering.
>>>>>
>>>>> (Yes, I know what I said to you about this earlier, OTOH see above)
>>>>>
>>>>
>>>> It allows matching on additional DMI tags without additional code -
>>>> patch 2 depends on it.
>>>
>>> And since there is no difference to the frequency the name is enough.
>>> So, I wouldn't go with this series as is. See above.
>>
>> Nope: Just like for the stmmac, we need to include the asset tags to
>> avoid matching variations of the devices which may carry the same board
>> name. While I will try to avoid that this happens, we are better safe
>> than sorry here.
> 
> Do we have an issue right now?
> Yes / No

Andy, we are trying to design a robust upstream driver here, no ad-hoc
BSP that will not survive the hardware anyway.

Jan

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