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Commit 299e5515 authored by Dmitry Lifshitz's avatar Dmitry Lifshitz Committed by Tony Lindgren
Browse files

ARM: dts: cm-t3x: add ADS7846 touchscreen support 



Add ADS7846 touchscreen support.

Signed-off-by: default avatarDmitry Lifshitz <lifshitz@compulab.co.il>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 274ac841

arch/arm/boot/dts/omap3-cm-t3x.dtsi

+57 −0
Original line number Diff line number Diff line
@@ -49,6 +49,13 @@ 
		compatible = "usb-nop-xceiv";

		vcc-supply = <&hsusb2_power>;

	};



	ads7846reg: ads7846-reg {

		compatible = "regulator-fixed";

		regulator-name = "ads7846-reg";

		regulator-min-microvolt = <3300000>;

		regulator-max-microvolt = <3300000>;

	};

};



&omap3_pmx_core {
@@ -115,6 +122,21 @@ 
			OMAP3_CORE1_IOPAD(0x20e6, PIN_OUTPUT | MUX_MODE0)	/* dss_data5.dss_data5 */

		>;

	};



	ads7846_pins: pinmux_ads7846_pins {

		pinctrl-single,pins = <

			OMAP3_CORE1_IOPAD(0x20ba, PIN_INPUT_PULLUP | MUX_MODE4)	/* gpmc_ncs6.gpio_57 */

		>;

	};



	mcspi1_pins: pinmux_mcspi1_pins {

		pinctrl-single,pins = <

			OMAP3_CORE1_IOPAD(0x21c8, PIN_INPUT | MUX_MODE0)	/* mcspi1_clk */

			OMAP3_CORE1_IOPAD(0x21ca, PIN_INPUT | MUX_MODE0)	/* mcspi1_simo */

			OMAP3_CORE1_IOPAD(0x21cc, PIN_INPUT | MUX_MODE0)	/* mcspi1_somi */

			OMAP3_CORE1_IOPAD(0x21ce, PIN_INPUT_PULLDOWN | MUX_MODE0) /* mcspi1_cs0 */

		>;

	};

};



&uart3 {
@@ -147,3 +169,38 @@ 
&usbhsehci {

	phys = <&hsusb1_phy &hsusb2_phy>;

};



&mcspi1 {

	pinctrl-names = "default";

	pinctrl-0 = <&mcspi1_pins>;



	/* touch controller */

	ads7846@0 {

		pinctrl-names = "default";

		pinctrl-0 = <&ads7846_pins>;



		compatible = "ti,ads7846";

		vcc-supply = <&ads7846reg>;



		reg = <0>;			/* CS0 */

		spi-max-frequency = <1500000>;



		interrupt-parent = <&gpio2>;

		interrupts = <25 0>;		/* gpio_57 */

		pendown-gpio = <&gpio2 25 0>;



		ti,x-min = /bits/ 16 <0x0>;

		ti,x-max = /bits/ 16 <0x0fff>;

		ti,y-min = /bits/ 16 <0x0>;

		ti,y-max = /bits/ 16 <0x0fff>;



		ti,x-plate-ohms = /bits/ 16 <180>;

		ti,pressure-max = /bits/ 16 <255>;



		ti,debounce-max = /bits/ 16 <30>;

		ti,debounce-tol = /bits/ 16 <10>;

		ti,debounce-rep = /bits/ 16 <1>;



		linux,wakeup;

	};

};