Commit 1c9aa677 authored by dillon min's avatar dillon min Committed by Alexandre Torgue
Browse files

ARM: dts: stm32: enable stmpe811 on stm32429-disco board 



Enable the stmpe811 touch screen on stm32429-disco board.

Signed-off-by: default avatardillon min <dillon.minfei@gmail.com>
Reviewed-by: default avatarPhilippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: default avatarAlexandre Torgue <alexandre.torgue@st.com>
parent 4409aeae

arch/arm/boot/dts/stm32f429-disco.dts

+45 −0
Original line number Diff line number Diff line
@@ -110,6 +110,51 @@ &crc { 
	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>;

		};

	};

};



&ltdc {

	status = "okay";

	pinctrl-0 = <&ltdc_pins_b>;