[PATCH v3 3/4] ARM: dts: stm32: enable stmpe811 on stm32429-disco board
From: <hidden>
Date: 2020-05-08 01:46:45
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Linus Torvalds
From: dillon min <redacted> Enable the stmpe811 touch screen on stm32429-disco board. Signed-off-by: dillon min <redacted> --- Hi, Philippe Schenker, Alexandre Torgue compare to [patch v1 3/4], this patch remove id, blocks, irq-trigger from stmpe811 dts, as they not used by driver anymore. thanks. dillon, arch/arm/boot/dts/stm32f429-disco.dts | 47 +++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+)
diff --git a/arch/arm/boot/dts/stm32f429-disco.dts b/arch/arm/boot/dts/stm32f429-disco.dts
index 30c0f67..fad1ec1 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 +129,48 @@ pinctrl-names = "default"; status = "okay"; }; + +&i2c3 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c3_pins>; + clock-frequency = <100000>; + status = "okay"; + + stmpe811@41 { + compatible = "st,stmpe811"; + reg = <0x41>; + interrupts = <15 IRQ_TYPE_EDGE_FALLING>; + interrupt-parent = <&gpioa>; + /* 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>; + }; + }; +};
--
2.7.4
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