linux-kernel - Re: [PATCH 5/7] add bindings for stm32 IIO timer drivers

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Message-ID: <CA+M3ks7MgnUJoDoNG157+MbdhgbqwzRmhPcD-uQKC7_DJVAK6A@mail.gmail.com>
Date:   Wed, 23 Nov 2016 09:17:58 +0100
From:   Benjamin Gaignard <benjamin.gaignard@...aro.org>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Lars-Peter Clausen <lars@...afoo.de>, robh+dt@...nel.org,
        Mark Rutland <mark.rutland@....com>, alexandre.torgue@...com,
        devicetree@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        linux-pwm@...r.kernel.org, jic23@...nel.org, knaack.h@....de,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Fabrice Gasnier <fabrice.gasnier@...com>,
        Gerald Baeza <gerald.baeza@...com>,
        Arnaud Pouliquen <arnaud.pouliquen@...com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Linaro Kernel Mailman List <linaro-kernel@...ts.linaro.org>,
        Benjamin Gaignard <benjamin.gaignard@...com>
Subject: Re: [PATCH 5/7] add bindings for stm32 IIO timer drivers

If it is ok for you I will add "id" parameter in mfd driver and
forward it to the sub-devices drivers
to be able to distinguish the hardware blocks


2016-11-22 18:18 GMT+01:00 Lee Jones <lee.jones@...aro.org>:
> On Tue, 22 Nov 2016, Benjamin Gaignard wrote:
>
>> [snip]
>> >> +     "st,stm32-iio-timer5"
>> >> +     "st,stm32-iio-timer6"
>> >> +     "st,stm32-iio-timer7"
>> >> +     "st,stm32-iio-timer8"
>> >> +     "st,stm32-iio-timer9"
>> >> +     "st,stm32-iio-timer10"
>> >> +     "st,stm32-iio-timer11"
>> >> +     "st,stm32-iio-timer12"
>> >> +     "st,stm32-iio-timer13"
>> >> +     "st,stm32-iio-timer14"
>> >
>> > We can't do this. This is a binding for a driver, not for the hardware.
>> >
>>
>> Unfortunately each instance for the hardware IP have little
>> differences like which triggers they could accept or size of the
>> counter register,
>> and I doesn't have value inside the hardware to distinguish them so
>> the only way I found is to use compatible.
>
> Can't you represent these as properties?
>
> --
> Lee Jones
> Linaro STMicroelectronics Landing Team Lead
> Linaro.org │ Open source software for ARM SoCs
> Follow Linaro: Facebook | Twitter | Blog



-- 
Benjamin Gaignard

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