| Message ID | 1498055415-31513-2-git-send-email-fabrice.gasnier@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, 21 Jun 2017 16:30:08 +0200 Fabrice Gasnier <fabrice.gasnier@st.com> wrote: > Add documentation for STMicroelectronics STM32 Low-Power Timer binding. > > Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> Looks sensible to me. Acked-by: Jonathan Cameron <jic23@kernel.org> > --- > Changes in v2: > - Lee's comments: s/Low Power/Low-Power/, remove 0x in example, improve > properties descriptions > --- > .../devicetree/bindings/mfd/stm32-lptimer.txt | 48 ++++++++++++++++++++++ > 1 file changed, 48 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mfd/stm32-lptimer.txt > > diff --git a/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt > new file mode 100644 > index 0000000..af859c8 > --- /dev/null > +++ b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt > @@ -0,0 +1,48 @@ > +STMicroelectronics STM32 Low-Power Timer > + > +The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several > +functions: > +- PWM output (with programmable prescaler, configurable polarity) > +- Quadrature encoder, counter > +- Trigger source for STM32 ADC/DAC (LPTIM_OUT) > + > +Required properties: > +- compatible: Must be "st,stm32-lptimer". > +- reg: Offset and length of the device's register set. > +- clocks: Phandle to the clock used by the LP Timer module. > +- clock-names: Must be "mux". > +- #address-cells: Should be '<1>'. > +- #size-cells: Should be '<0>'. > + > +Optional subnodes: > +- pwm: See ../pwm/pwm-stm32-lp.txt > +- counter: See ../iio/timer/stm32-lptimer-cnt.txt > +- trigger: See ../iio/timer/stm32-lptimer-trigger.txt > + > +Example: > + > + lptimer1: lptimer@40002400 { > + compatible = "st,stm32-lptimer"; > + reg = <0x40002400 0x400>; > + clocks = <&timer_clk>; > + clock-names = "mux"; > + #address-cells = <1>; > + #size-cells = <0>; > + > + pwm { > + compatible = "st,stm32-pwm-lp"; > + pinctrl-names = "default"; > + pinctrl-0 = <&lppwm1_pins>; > + }; > + > + trigger@0 { > + compatible = "st,stm32-lptimer-trigger"; > + reg = <0>; > + }; > + > + counter { > + compatible = "st,stm32-lptimer-counter"; > + pinctrl-names = "default"; > + pinctrl-0 = <&lptim1_in_pins>; > + }; > + };
On Wed, 21 Jun 2017, Fabrice Gasnier wrote: > Add documentation for STMicroelectronics STM32 Low-Power Timer binding. > > Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> > --- > Changes in v2: > - Lee's comments: s/Low Power/Low-Power/, remove 0x in example, improve > properties descriptions > --- > .../devicetree/bindings/mfd/stm32-lptimer.txt | 48 ++++++++++++++++++++++ > 1 file changed, 48 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mfd/stm32-lptimer.txt For my own reference: Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org> > diff --git a/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt > new file mode 100644 > index 0000000..af859c8 > --- /dev/null > +++ b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt > @@ -0,0 +1,48 @@ > +STMicroelectronics STM32 Low-Power Timer > + > +The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several > +functions: > +- PWM output (with programmable prescaler, configurable polarity) > +- Quadrature encoder, counter > +- Trigger source for STM32 ADC/DAC (LPTIM_OUT) > + > +Required properties: > +- compatible: Must be "st,stm32-lptimer". > +- reg: Offset and length of the device's register set. > +- clocks: Phandle to the clock used by the LP Timer module. > +- clock-names: Must be "mux". > +- #address-cells: Should be '<1>'. > +- #size-cells: Should be '<0>'. > + > +Optional subnodes: > +- pwm: See ../pwm/pwm-stm32-lp.txt > +- counter: See ../iio/timer/stm32-lptimer-cnt.txt > +- trigger: See ../iio/timer/stm32-lptimer-trigger.txt > + > +Example: > + > + lptimer1: lptimer@40002400 { > + compatible = "st,stm32-lptimer"; > + reg = <0x40002400 0x400>; > + clocks = <&timer_clk>; > + clock-names = "mux"; > + #address-cells = <1>; > + #size-cells = <0>; > + > + pwm { > + compatible = "st,stm32-pwm-lp"; > + pinctrl-names = "default"; > + pinctrl-0 = <&lppwm1_pins>; > + }; > + > + trigger@0 { > + compatible = "st,stm32-lptimer-trigger"; > + reg = <0>; > + }; > + > + counter { > + compatible = "st,stm32-lptimer-counter"; > + pinctrl-names = "default"; > + pinctrl-0 = <&lptim1_in_pins>; > + }; > + };
On Wed, Jun 21, 2017 at 04:30:08PM +0200, Fabrice Gasnier wrote: > Add documentation for STMicroelectronics STM32 Low-Power Timer binding. > > Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> > --- > Changes in v2: > - Lee's comments: s/Low Power/Low-Power/, remove 0x in example, improve > properties descriptions > --- > .../devicetree/bindings/mfd/stm32-lptimer.txt | 48 ++++++++++++++++++++++ > 1 file changed, 48 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mfd/stm32-lptimer.txt > > diff --git a/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt > new file mode 100644 > index 0000000..af859c8 > --- /dev/null > +++ b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt > @@ -0,0 +1,48 @@ > +STMicroelectronics STM32 Low-Power Timer > + > +The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several > +functions: > +- PWM output (with programmable prescaler, configurable polarity) > +- Quadrature encoder, counter > +- Trigger source for STM32 ADC/DAC (LPTIM_OUT) > + > +Required properties: > +- compatible: Must be "st,stm32-lptimer". > +- reg: Offset and length of the device's register set. > +- clocks: Phandle to the clock used by the LP Timer module. > +- clock-names: Must be "mux". > +- #address-cells: Should be '<1>'. > +- #size-cells: Should be '<0>'. > + > +Optional subnodes: > +- pwm: See ../pwm/pwm-stm32-lp.txt > +- counter: See ../iio/timer/stm32-lptimer-cnt.txt > +- trigger: See ../iio/timer/stm32-lptimer-trigger.txt > + > +Example: > + > + lptimer1: lptimer@40002400 { timer@... > + compatible = "st,stm32-lptimer"; > + reg = <0x40002400 0x400>; > + clocks = <&timer_clk>; > + clock-names = "mux"; > + #address-cells = <1>; > + #size-cells = <0>; > + > + pwm { > + compatible = "st,stm32-pwm-lp"; > + pinctrl-names = "default"; > + pinctrl-0 = <&lppwm1_pins>; > + }; > + > + trigger@0 { > + compatible = "st,stm32-lptimer-trigger"; > + reg = <0>; Is there more than 1? > + }; > + > + counter { > + compatible = "st,stm32-lptimer-counter"; > + pinctrl-names = "default"; > + pinctrl-0 = <&lptim1_in_pins>; > + }; > + }; > -- > 1.9.1 >
On 06/26/2017 08:07 PM, Rob Herring wrote: > On Wed, Jun 21, 2017 at 04:30:08PM +0200, Fabrice Gasnier wrote: >> Add documentation for STMicroelectronics STM32 Low-Power Timer binding. >> >> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> >> --- >> Changes in v2: >> - Lee's comments: s/Low Power/Low-Power/, remove 0x in example, improve >> properties descriptions >> --- >> .../devicetree/bindings/mfd/stm32-lptimer.txt | 48 ++++++++++++++++++++++ >> 1 file changed, 48 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/mfd/stm32-lptimer.txt >> >> diff --git a/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt >> new file mode 100644 >> index 0000000..af859c8 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt >> @@ -0,0 +1,48 @@ >> +STMicroelectronics STM32 Low-Power Timer >> + >> +The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several >> +functions: >> +- PWM output (with programmable prescaler, configurable polarity) >> +- Quadrature encoder, counter >> +- Trigger source for STM32 ADC/DAC (LPTIM_OUT) >> + >> +Required properties: >> +- compatible: Must be "st,stm32-lptimer". >> +- reg: Offset and length of the device's register set. >> +- clocks: Phandle to the clock used by the LP Timer module. >> +- clock-names: Must be "mux". >> +- #address-cells: Should be '<1>'. >> +- #size-cells: Should be '<0>'. >> + >> +Optional subnodes: >> +- pwm: See ../pwm/pwm-stm32-lp.txt >> +- counter: See ../iio/timer/stm32-lptimer-cnt.txt >> +- trigger: See ../iio/timer/stm32-lptimer-trigger.txt >> + >> +Example: >> + >> + lptimer1: lptimer@40002400 { > > timer@... Hi Rob, I initially put "lptimer" here to distinguish Low-Power Timer hardware from other "timers" hardware that can be found also on stm32 devices. I'd prefer to keep it, is it sensible from your point of view ? Please advise. > >> + compatible = "st,stm32-lptimer"; >> + reg = <0x40002400 0x400>; >> + clocks = <&timer_clk>; >> + clock-names = "mux"; >> + #address-cells = <1>; >> + #size-cells = <0>; >> + >> + pwm { >> + compatible = "st,stm32-pwm-lp"; >> + pinctrl-names = "default"; >> + pinctrl-0 = <&lppwm1_pins>; >> + }; >> + >> + trigger@0 { >> + compatible = "st,stm32-lptimer-trigger"; >> + reg = <0>; > > Is there more than 1? reg identifies trigger hardware block. Best Regards, Thanks, Fabrice > >> + }; >> + >> + counter { >> + compatible = "st,stm32-lptimer-counter"; >> + pinctrl-names = "default"; >> + pinctrl-0 = <&lptim1_in_pins>; >> + }; >> + }; >> -- >> 1.9.1 >>
On Tue, Jun 27, 2017 at 10:57:32AM +0200, Fabrice Gasnier wrote: > On 06/26/2017 08:07 PM, Rob Herring wrote: > > On Wed, Jun 21, 2017 at 04:30:08PM +0200, Fabrice Gasnier wrote: > >> Add documentation for STMicroelectronics STM32 Low-Power Timer binding. > >> > >> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> > >> --- > >> Changes in v2: > >> - Lee's comments: s/Low Power/Low-Power/, remove 0x in example, improve > >> properties descriptions > >> --- > >> .../devicetree/bindings/mfd/stm32-lptimer.txt | 48 ++++++++++++++++++++++ > >> 1 file changed, 48 insertions(+) > >> create mode 100644 Documentation/devicetree/bindings/mfd/stm32-lptimer.txt > >> > >> diff --git a/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt > >> new file mode 100644 > >> index 0000000..af859c8 > >> --- /dev/null > >> +++ b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt > >> @@ -0,0 +1,48 @@ > >> +STMicroelectronics STM32 Low-Power Timer > >> + > >> +The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several > >> +functions: > >> +- PWM output (with programmable prescaler, configurable polarity) > >> +- Quadrature encoder, counter > >> +- Trigger source for STM32 ADC/DAC (LPTIM_OUT) > >> + > >> +Required properties: > >> +- compatible: Must be "st,stm32-lptimer". > >> +- reg: Offset and length of the device's register set. > >> +- clocks: Phandle to the clock used by the LP Timer module. > >> +- clock-names: Must be "mux". > >> +- #address-cells: Should be '<1>'. > >> +- #size-cells: Should be '<0>'. > >> + > >> +Optional subnodes: > >> +- pwm: See ../pwm/pwm-stm32-lp.txt > >> +- counter: See ../iio/timer/stm32-lptimer-cnt.txt > >> +- trigger: See ../iio/timer/stm32-lptimer-trigger.txt > >> + > >> +Example: > >> + > >> + lptimer1: lptimer@40002400 { > > > > timer@... > > Hi Rob, > > I initially put "lptimer" here to distinguish Low-Power Timer hardware > from other "timers" hardware that can be found also on stm32 devices. > I'd prefer to keep it, is it sensible from your point of view ? > Please advise. Node names are supposed to be the class of device (e.g. ethernet, serial, etc.), not the specific device. The compatible is what distinguishes it from other timers. > >> + compatible = "st,stm32-lptimer"; > >> + reg = <0x40002400 0x400>; > >> + clocks = <&timer_clk>; > >> + clock-names = "mux"; > >> + #address-cells = <1>; > >> + #size-cells = <0>; > >> + > >> + pwm { > >> + compatible = "st,stm32-pwm-lp"; > >> + pinctrl-names = "default"; > >> + pinctrl-0 = <&lppwm1_pins>; > >> + }; > >> + > >> + trigger@0 { > >> + compatible = "st,stm32-lptimer-trigger"; > >> + reg = <0>; > > > > Is there more than 1? > > reg identifies trigger hardware block. Okay, the trigger patch needs to be reworded. Rob
On 06/28/2017 06:44 PM, Rob Herring wrote: > On Tue, Jun 27, 2017 at 10:57:32AM +0200, Fabrice Gasnier wrote: >> On 06/26/2017 08:07 PM, Rob Herring wrote: >>> On Wed, Jun 21, 2017 at 04:30:08PM +0200, Fabrice Gasnier wrote: >>>> Add documentation for STMicroelectronics STM32 Low-Power Timer binding. >>>> >>>> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> >>>> --- >>>> Changes in v2: >>>> - Lee's comments: s/Low Power/Low-Power/, remove 0x in example, improve >>>> properties descriptions >>>> --- >>>> .../devicetree/bindings/mfd/stm32-lptimer.txt | 48 ++++++++++++++++++++++ >>>> 1 file changed, 48 insertions(+) >>>> create mode 100644 Documentation/devicetree/bindings/mfd/stm32-lptimer.txt >>>> >>>> diff --git a/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt >>>> new file mode 100644 >>>> index 0000000..af859c8 >>>> --- /dev/null >>>> +++ b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt >>>> @@ -0,0 +1,48 @@ >>>> +STMicroelectronics STM32 Low-Power Timer >>>> + >>>> +The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several >>>> +functions: >>>> +- PWM output (with programmable prescaler, configurable polarity) >>>> +- Quadrature encoder, counter >>>> +- Trigger source for STM32 ADC/DAC (LPTIM_OUT) >>>> + >>>> +Required properties: >>>> +- compatible: Must be "st,stm32-lptimer". >>>> +- reg: Offset and length of the device's register set. >>>> +- clocks: Phandle to the clock used by the LP Timer module. >>>> +- clock-names: Must be "mux". >>>> +- #address-cells: Should be '<1>'. >>>> +- #size-cells: Should be '<0>'. >>>> + >>>> +Optional subnodes: >>>> +- pwm: See ../pwm/pwm-stm32-lp.txt >>>> +- counter: See ../iio/timer/stm32-lptimer-cnt.txt >>>> +- trigger: See ../iio/timer/stm32-lptimer-trigger.txt >>>> + >>>> +Example: >>>> + >>>> + lptimer1: lptimer@40002400 { >>> >>> timer@... >> >> Hi Rob, >> >> I initially put "lptimer" here to distinguish Low-Power Timer hardware >> from other "timers" hardware that can be found also on stm32 devices. >> I'd prefer to keep it, is it sensible from your point of view ? >> Please advise. > > Node names are supposed to be the class of device (e.g. ethernet, > serial, etc.), not the specific device. The compatible is what > distinguishes it from other timers. Hi Rob, Thanks for your answer. I'll update this in v3. > >>>> + compatible = "st,stm32-lptimer"; >>>> + reg = <0x40002400 0x400>; >>>> + clocks = <&timer_clk>; >>>> + clock-names = "mux"; >>>> + #address-cells = <1>; >>>> + #size-cells = <0>; >>>> + >>>> + pwm { >>>> + compatible = "st,stm32-pwm-lp"; >>>> + pinctrl-names = "default"; >>>> + pinctrl-0 = <&lppwm1_pins>; >>>> + }; >>>> + >>>> + trigger@0 { >>>> + compatible = "st,stm32-lptimer-trigger"; >>>> + reg = <0>; >>> >>> Is there more than 1? >> >> reg identifies trigger hardware block. > > Okay, the trigger patch needs to be reworded. > I'll update this in v3. Best Regards, Fabrice > Rob >
diff --git a/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt new file mode 100644 index 0000000..af859c8 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt @@ -0,0 +1,48 @@ +STMicroelectronics STM32 Low-Power Timer + +The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several +functions: +- PWM output (with programmable prescaler, configurable polarity) +- Quadrature encoder, counter +- Trigger source for STM32 ADC/DAC (LPTIM_OUT) + +Required properties: +- compatible: Must be "st,stm32-lptimer". +- reg: Offset and length of the device's register set. +- clocks: Phandle to the clock used by the LP Timer module. +- clock-names: Must be "mux". +- #address-cells: Should be '<1>'. +- #size-cells: Should be '<0>'. + +Optional subnodes: +- pwm: See ../pwm/pwm-stm32-lp.txt +- counter: See ../iio/timer/stm32-lptimer-cnt.txt +- trigger: See ../iio/timer/stm32-lptimer-trigger.txt + +Example: + + lptimer1: lptimer@40002400 { + compatible = "st,stm32-lptimer"; + reg = <0x40002400 0x400>; + clocks = <&timer_clk>; + clock-names = "mux"; + #address-cells = <1>; + #size-cells = <0>; + + pwm { + compatible = "st,stm32-pwm-lp"; + pinctrl-names = "default"; + pinctrl-0 = <&lppwm1_pins>; + }; + + trigger@0 { + compatible = "st,stm32-lptimer-trigger"; + reg = <0>; + }; + + counter { + compatible = "st,stm32-lptimer-counter"; + pinctrl-names = "default"; + pinctrl-0 = <&lptim1_in_pins>; + }; + };
Add documentation for STMicroelectronics STM32 Low-Power Timer binding. Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> --- Changes in v2: - Lee's comments: s/Low Power/Low-Power/, remove 0x in example, improve properties descriptions --- .../devicetree/bindings/mfd/stm32-lptimer.txt | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/stm32-lptimer.txt