From: Benjamin Gaignard <benjamin.gaignard@linaro.org>
To: Rob Herring <robh@kernel.org>
Cc: Lee Jones <lee.jones@linaro.org>,
Mark Rutland <mark.rutland@arm.com>,
alexandre.torgue@st.com, devicetree@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Thierry Reding <thierry.reding@gmail.com>,
linux-pwm@vger.kernel.org, Jonathan Cameron <jic23@kernel.org>,
knaack.h@gmx.de, Lars-Peter Clausen <lars@metafoo.de>,
Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Fabrice Gasnier <fabrice.gasnier@st.com>,
Gerald Baeza <gerald.baeza@st.com>,
Arnaud Pouliquen <arnaud.pouliquen@st.com>,
Linus Walleij <linus.walleij@linaro.org>,
Linaro Kernel Mailman List <linaro-kernel@lists.linaro.org>,
Benjamin Gaignard <benjamin.gaignard@st.com>
Subject: Re: [PATCH v6 1/8] MFD: add bindings for STM32 Timers driver
Date: Tue, 13 Dec 2016 10:29:36 +0100 [thread overview]
Message-ID: <CA+M3ks4ukP14YE5-6+gAzJBjEmjEyGyVbsVGOm8ehVm0EfzO-w@mail.gmail.com> (raw)
In-Reply-To: <20161212185149.rt3xqpn3mbaavb4l@rob-hp-laptop>
2016-12-12 19:51 GMT+01:00 Rob Herring <robh@kernel.org>:
> On Fri, Dec 09, 2016 at 03:15:12PM +0100, Benjamin Gaignard wrote:
>> Add bindings information for STM32 Timers
>>
>> version 6:
>> - rename stm32-gtimer to stm32-timers
>> - change compatible
>> - add description about the IPs
>>
>> version 2:
>> - rename stm32-mfd-timer to stm32-gptimer
>> - only keep one compatible string
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
>> ---
>> .../devicetree/bindings/mfd/stm32-timers.txt | 46 ++++++++++++++++++++++
>> 1 file changed, 46 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/mfd/stm32-timers.txt
>>
>> diff --git a/Documentation/devicetree/bindings/mfd/stm32-timers.txt b/Documentation/devicetree/bindings/mfd/stm32-timers.txt
>> new file mode 100644
>> index 0000000..b30868e
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mfd/stm32-timers.txt
>> @@ -0,0 +1,46 @@
>> +STM32 Timers driver bindings
>> +
>> +This IP provides 3 types of timer along with PWM functionality:
>> +- advanced-control timers consist of a 16-bit auto-reload counter driven by a programmable
>> + prescaler, break input feature, PWM outputs and complementary PWM ouputs channels.
>> +- general-purpose timers consist of a 16-bit or 32-bit auto-reload counter driven by a
>> + programmable prescaler and PWM outputs.
>> +- basic timers consist of a 16-bit auto-reload counter driven by a programmable prescaler.
>> +
>> +Required parameters:
>> +- compatible: must be "st,stm32-timers"
>> +
>> +- reg: Physical base address and length of the controller's
>> + registers.
>> +- clock-names: Set to "clk_int".
>
> 'clk' is redundant. Also, you don't really need -names when there is
> only one of them.
I use devm_regmap_init_mmio_clk() which get the clock by it name so
I have to define it in DT.
>> +- clocks: Phandle to the clock used by the timer module.
>> + For Clk properties, please refer to ../clock/clock-bindings.txt
>> +
>> +Optional parameters:
>> +- resets: Phandle to the parent reset controller.
>> + See ../reset/st,stm32-rcc.txt
>> +
>> +Optional subnodes:
>> +- pwm: See ../pwm/pwm-stm32.txt
>> +- timer: See ../iio/timer/stm32-timer-trigger.txt
>> +
>> +Example:
>> + timers@40010000 {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + compatible = "st,stm32-timers";
>> + reg = <0x40010000 0x400>;
>> + clocks = <&rcc 0 160>;
>> + clock-names = "clk_int";
>> +
>> + pwm {
>> + compatible = "st,stm32-pwm";
>> + pinctrl-0 = <&pwm1_pins>;
>> + pinctrl-names = "default";
>> + };
>> +
>> + timer {
>> + compatible = "st,stm32-timer-trigger";
>> + reg = <0>;
>
> You don't need reg here as there is only one. In turn, you don't need
> #address-cells or #size-cells.
I use "reg" to set each timer configuration.
>From hardware point of view they are all the same except for which hardware
signals they could consume and/or send.
"reg" is used as index of the two tables in driver code.
>
>> + };
>> + };
>> --
>> 1.9.1
>>
next prev parent reply other threads:[~2016-12-13 9:29 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-09 14:15 [PATCH v6 0/8] Add PWM and IIO timer drivers for STM32 Benjamin Gaignard
2016-12-09 14:15 ` [PATCH v6 1/8] MFD: add bindings for STM32 Timers driver Benjamin Gaignard
2016-12-12 7:46 ` Lee Jones
2016-12-12 18:51 ` Rob Herring
2016-12-13 9:29 ` Benjamin Gaignard [this message]
2016-12-13 21:07 ` Rob Herring
2016-12-14 13:07 ` Benjamin Gaignard
2016-12-09 14:15 ` [PATCH v6 2/8] MFD: add " Benjamin Gaignard
2016-12-12 7:47 ` Lee Jones
2016-12-30 20:38 ` Jonathan Cameron
2016-12-09 14:15 ` [PATCH v6 3/8] PWM: add pwm-stm32 DT bindings Benjamin Gaignard
2016-12-12 19:02 ` Rob Herring
2016-12-13 11:11 ` Lee Jones
2016-12-13 15:57 ` Rob Herring
2016-12-13 16:28 ` Benjamin Gaignard
2016-12-13 17:11 ` Rob Herring
2016-12-19 12:55 ` Lee Jones
2016-12-09 14:15 ` [PATCH v6 4/8] PWM: add PWM driver for STM32 plaftorm Benjamin Gaignard
2016-12-09 14:15 ` [PATCH v6 5/8] IIO: add bindings for STM32 timer trigger driver Benjamin Gaignard
2016-12-12 19:28 ` Rob Herring
2016-12-09 14:15 ` [PATCH v6 6/8] IIO: add " Benjamin Gaignard
2016-12-30 21:12 ` Jonathan Cameron
2017-01-02 8:46 ` Benjamin Gaignard
2017-01-02 18:22 ` Jonathan Cameron
2017-01-03 9:23 ` Benjamin Gaignard
2017-01-03 12:59 ` Benjamin Gaignard
2017-01-03 17:24 ` Jonathan Cameron
2017-01-03 17:16 ` Jonathan Cameron
2016-12-09 14:15 ` [PATCH v6 7/8] ARM: dts: stm32: add Timers driver for stm32f429 MCU Benjamin Gaignard
2016-12-12 18:59 ` Rob Herring
2016-12-13 9:15 ` Benjamin Gaignard
2016-12-13 9:29 ` Benjamin Gaignard
2016-12-09 14:15 ` [PATCH v6 8/8] ARM: dts: stm32: Enable pw1 and pwm3 for stm32f469-disco Benjamin Gaignard
2016-12-12 7:48 ` [PATCH v6 0/8] Add PWM and IIO timer drivers for STM32 Lee Jones
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CA+M3ks4ukP14YE5-6+gAzJBjEmjEyGyVbsVGOm8ehVm0EfzO-w@mail.gmail.com \
--to=benjamin.gaignard@linaro.org \
--cc=alexandre.torgue@st.com \
--cc=arnaud.pouliquen@st.com \
--cc=benjamin.gaignard@st.com \
--cc=devicetree@vger.kernel.org \
--cc=fabrice.gasnier@st.com \
--cc=gerald.baeza@st.com \
--cc=jic23@kernel.org \
--cc=knaack.h@gmx.de \
--cc=lars@metafoo.de \
--cc=lee.jones@linaro.org \
--cc=linaro-kernel@lists.linaro.org \
--cc=linus.walleij@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-iio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pwm@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=pmeerw@pmeerw.net \
--cc=robh@kernel.org \
--cc=thierry.reding@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).