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Date: Tue, 13 Dec 2016 17:28:36 +0100 From: Benjamin Gaignard <benjamin.gaignard@...aro.org> To: Rob Herring <robh@...nel.org> Cc: Lee Jones <lee.jones@...aro.org>, Mark Rutland <mark.rutland@....com>, Alexandre Torgue <alexandre.torgue@...com>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Thierry Reding <thierry.reding@...il.com>, Linux PWM List <linux-pwm@...r.kernel.org>, Jonathan Cameron <jic23@...nel.org>, Hartmut Knaack <knaack.h@....de>, Lars-Peter Clausen <lars@...afoo.de>, Peter Meerwald <pmeerw@...erw.net>, "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.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@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>, Benjamin Gaignard <benjamin.gaignard@...com> Subject: Re: [PATCH v6 3/8] PWM: add pwm-stm32 DT bindings 2016-12-13 16:57 GMT+01:00 Rob Herring <robh@...nel.org>: > On Tue, Dec 13, 2016 at 5:11 AM, Lee Jones <lee.jones@...aro.org> wrote: >> On Mon, 12 Dec 2016, Rob Herring wrote: >> >>> On Fri, Dec 09, 2016 at 03:15:14PM +0100, Benjamin Gaignard wrote: >>> > Define bindings for pwm-stm32 >>> > >>> > version 6: >>> > - change st,breakinput parameter format to make it usuable on stm32f7 too. >>> > >>> > version 2: >>> > - use parameters instead of compatible of handle the hardware configuration >>> > >>> > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...com> >>> > --- >>> > .../devicetree/bindings/pwm/pwm-stm32.txt | 33 ++++++++++++++++++++++ >>> > 1 file changed, 33 insertions(+) >>> > create mode 100644 Documentation/devicetree/bindings/pwm/pwm-stm32.txt >>> > >>> > diff --git a/Documentation/devicetree/bindings/pwm/pwm-stm32.txt b/Documentation/devicetree/bindings/pwm/pwm-stm32.txt >>> > new file mode 100644 >>> > index 0000000..866f222 >>> > --- /dev/null >>> > +++ b/Documentation/devicetree/bindings/pwm/pwm-stm32.txt >>> > @@ -0,0 +1,33 @@ >>> > +STMicroelectronics STM32 Timers PWM bindings >>> > + >>> > +Must be a sub-node of an STM32 Timers device tree node. >>> > +See ../mfd/stm32-timers.txt for details about the parent node. >>> > + >>> > +Required parameters: >>> > +- compatible: Must be "st,stm32-pwm". >>> > +- pinctrl-names: Set to "default". >>> > +- pinctrl-0: List of phandles pointing to pin configuration nodes for PWM module. >>> > + For Pinctrl properties see ../pinctrl/pinctrl-bindings.txt >>> > + >>> > +Optional parameters: >>> > +- st,breakinput: Arrays of three u32 <index level filter> to describe break input configurations. >>> > + "index" indicates on which break input the configuration should be applied. >>> > + "level" gives the active level (0=low or 1=high) for this configuration. >>> > + "filter" gives the filtering value to be applied. >>> > + >>> > +Example: >>> > + timers@...10000 { >>> >>> timer@... >> >> No, it should be timers. > > Read the spec. "timer" is a generic node name. "timers" is not. How > many is not relevant. "timer" is already used in stm32 DT for clocksource node... It is also why I use "timers" for this. > >> The 's' is intentional, since this parent (MFD) device houses 3 >> different types of timers. The "timer" node is a child of this one. -- Benjamin Gaignard Graphic Study Group Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog
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