linux-kernel - Re: [PATCH v4 1/7] MFD: add bindings for STM32 General Purpose Timer driver

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Date:   Tue, 6 Dec 2016 15:02:18 +0100
From:   Benjamin Gaignard <benjamin.gaignard@...aro.org>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     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, Jonathan Cameron <jic23@...nel.org>,
        knaack.h@....de, Lars-Peter Clausen <lars@...afoo.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 v4 1/7] MFD: add bindings for STM32 General Purpose Timer driver

[snip]
>
> I'm not going to push too hard, but I still thing "advanced-control"
> would suit better, since this is not *just* a timer.  In fact, the
> parent device (the MFD) doesn't have any timer functionality.  That's
> what "timer@0" does.
>
> The IP is called "Advanced Control" in the datasheet, no?

In datasheet only timers 1 and 8 are called "advanced-control" timers
Timers 2 to 5 and 9 to 14 are called "general purpose" timers.
Timers 6 and 7 are named "basic" timers.

I have ask around in ST and it seems that "general purpose" name was the
best to describe all the timers, so I would like to keep using it.

>
>> +             #address-cells = <1>;
>> +             #size-cells = <0>;
>> +             compatible = "st,stm32-gptimer";
>> +             reg = <0x40010000 0x400>;
>> +             clocks = <&rcc 0 160>;
>> +             clock-names = "clk_int";
>> +
>> +             pwm@0 {
>> +                     compatible = "st,stm32-pwm";
>> +                     pinctrl-0       = <&pwm1_pins>;
>> +                     pinctrl-names   = "default";
>> +             };
>> +
>> +             timer@0 {
>> +                     compatible = "st,stm32-timer-trigger";
>> +                     reg = <0>;
>> +             };
>> +     };
>
> --
> Lee Jones
> Linaro STMicroelectronics Landing Team Lead
> Linaro.org │ Open source software for ARM SoCs
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