[Linux-stm32] [PATCH 3/4] ARM: dts: stm32: enable stmpe811 on stm32429-disco board

[dillon min]

Hi Philippe Schenker,

thanks for your quick reply. i check the stmpe code, it's not use id,
block, irq-trigger anymore.
i will remove these three configuration in dts, and submit again.

thanks.

regards.

dillon,

Philippe Schenker <philippe.schenker at toradex.com> 于2020年5月7日周四 下午4:32写道：

> On Thu, 2020-05-07 at 15:47 +0800, dillon.minfei at gmail.com wrote:
> > From: dillon min <dillon.minfei at gmail.com>
> >
> > Enable the stmpe811 touch screen on stm32429-disco board.
> >
> > Signed-off-by: dillon min <dillon.minfei at gmail.com>
> > ---
> >  arch/arm/boot/dts/stm32f429-disco.dts | 50
> > +++++++++++++++++++++++++++++++++++
> >  1 file changed, 50 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/stm32f429-disco.dts
> > b/arch/arm/boot/dts/stm32f429-disco.dts
> > index 30c0f67..f9f21c8 100644
> > --- a/arch/arm/boot/dts/stm32f429-disco.dts
> > +++ b/arch/arm/boot/dts/stm32f429-disco.dts
> > @@ -49,6 +49,8 @@
> >  #include "stm32f429.dtsi"
> >  #include "stm32f429-pinctrl.dtsi"
> >  #include <dt-bindings/input/input.h>
> > +#include <dt-bindings/interrupt-controller/irq.h>
> > +#include <dt-bindings/gpio/gpio.h>
> >
> >  / {
> >       model = "STMicroelectronics STM32F429i-DISCO board";
> > @@ -127,3 +129,51 @@
> >       pinctrl-names = "default";
> >       status = "okay";
> >  };
> > +
> > +&i2c3 {
> > +     pinctrl-names = "default";
> > +     pinctrl-0 = <&i2c3_pins>;
> > +     clock-frequency = <100000>;
> > +     status = "okay";
> > +
> > +     stmpe811 at 41 {
> > +             compatible = "st,stmpe811";
> > +             reg = <0x41>;
> > +             interrupts = <15 IRQ_TYPE_EDGE_FALLING>;
> > +             interrupt-parent = <&gpioa>;
> > +             id = <0>;
> > +             blocks = <0x5>;
> > +             irq-trigger = <0x1>;
>
> I can't find id, blocks and irq-trigger in the binding. What are they
> for?
>
> Philippe
>
> > +             /* 3.25 MHz ADC clock speed */
> > +             st,adc-freq = <1>;
> > +             /* 12-bit ADC */
> > +             st,mod-12b = <1>;
> > +             /* internal ADC reference */
> > +             st,ref-sel = <0>;
> > +             /* ADC converstion time: 80 clocks */
> > +             st,sample-time = <4>;
> > +
> > +             stmpe_touchscreen {
> > +                     compatible = "st,stmpe-ts";
> > +                     /* 8 sample average control */
> > +                     st,ave-ctrl = <3>;
> > +                     /* 7 length fractional part in z */
> > +                     st,fraction-z = <7>;
> > +                     /*
> > +                      * 50 mA typical 80 mA max touchscreen drivers
> > +                      * current limit value
> > +                      */
> > +                     st,i-drive = <1>;
> > +                     /* 1 ms panel driver settling time */
> > +                     st,settling = <3>;
> > +                     /* 5 ms touch detect interrupt delay */
> > +                     st,touch-det-delay = <5>;
> > +             };
> > +
> > +             stmpe_adc {
> > +                     compatible = "st,stmpe-adc";
> > +                     /* forbid to use ADC channels 3-0 (touch) */
> > +                     st,norequest-mask = <0x0F>;
> > +             };
> > +     };
> > +};
>
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