linux-kernel - Re: [PATCH 3/4] mfd: tps65217: remove duplicated interrupt resources.

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Date:   Tue, 13 Jun 2017 18:05:32 -0500
From:   Grygorii Strashko <grygorii.strashko@...com>
To:     Enric Balletbo Serra <eballetbo@...il.com>
CC:     Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        "linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        <linux-pm@...r.kernel.org>, Rob Herring <robh@...nel.org>,
        Tony Lindgren <tony@...mide.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        Lee Jones <lee.jones@...aro.org>,
        Sebastian Reichel <sre@...nel.org>,
        Javier Martinez Canillas <javier@...hile0.org>
Subject: Re: [PATCH 3/4] mfd: tps65217: remove duplicated interrupt resources.



On 06/13/2017 03:18 AM, Enric Balletbo Serra wrote:
> Hi Grygorii,
> 
> 2017-06-13 0:41 GMT+02:00 Grygorii Strashko <grygorii.strashko@...com>:
>>
>>
>> On 06/12/2017 04:24 PM, Enric Balletbo i Serra wrote:
>>> I don't think it makes sense to have the interrupt resources for charger
>>> and power button in two different places, the driver and the DT binding.
>>> That's confusing so remove the ones from the mfd driver in favour of
>>> having the interrupt resources only described in the DT. Having the
>>> resources in DT may help if there is or will be a similar pmic with
>>> different resource allocation.
>>
>> Wouldn't this break DT compatibility? Old DTs do not contain IRQ resources
>> and so they work only because of IRQ definitions in code.
>>
> 
> I don't think so, the DT binding [1] and [2] says that the interrupts
> proprieties are required, so the bindings that that doesn't have these
> proprieties are wrong. Also I suspect that the binding that doesn't
> define the interrupts expect the hw block disabled as the status =
> "disabled" was defined, so I don't think was his intention have i.e
> the charger active.
> 
> [1] https://www.kernel.org/doc/Documentation/devicetree/bindings/power/supply/tps65217_charger.txt
> [2] https://www.kernel.org/doc/Documentation/devicetree/bindings/input/tps65218-pwrbutton.txt

Ok. fair enough.

Anyway, personally I would prefer to remove irqs from DT, but as both 
points are valid - its up to maintainers to decide.

-- 
regards,
-grygorii