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Commit e8552107 authored by Hans de Goede's avatar Hans de Goede Committed by Maxime Ripard
Browse files

ARM: dts: sun8i: reference-design-tablet: Add gsl1680 touchscreen node 



Almost all sun8i tablets use a gsl1680 touchscreen controller, so add
a node describing it to reference-design-tablet.dtsi.

Almost all, but not all, so mark it as disabled by default (dts files
will also need to supply a firmware-name and resolution info).

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Acked-by: default avatarChen-Yu Tsai <wens@csie.org>
Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
parent 835dbe8f

arch/arm/boot/dts/sun8i-reference-design-tablet.dtsi

+28 −0
Original line number Diff line number Diff line
@@ -63,6 +63,27 @@ 
	};

};



&i2c0 {

	/*

	 * The gsl1680 is rated at 400KHz and it will not work reliable at

	 * 100KHz, this has been confirmed on multiple different q8 tablets.

	 * The gsl1680 is the only device on this bus.

	 */

	clock-frequency = <400000>;



	gsl1680: touchscreen@40 {

		compatible = "silead,gsl1680";

		reg = <0x40>;

		interrupt-parent = <&pio>;

		interrupts = <1 5 IRQ_TYPE_EDGE_FALLING>; /* PB5 */

		pinctrl-names = "default";

		pinctrl-0 = <&ts_power_pin>;

		power-gpios = <&pio 7 1 GPIO_ACTIVE_HIGH>; /* PH1 */

		/* Most tablets use this touchscreen, but not all */

		status = "disabled";

	};

};



&mmc0 {

	pinctrl-names = "default";

	pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>;
@@ -88,6 +109,13 @@ 
		allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;

	};



	ts_power_pin: ts_power_pin@0 {

		allwinner,pins = "PH1";

		allwinner,function = "gpio_out";

		allwinner,drive = <SUN4I_PINCTRL_10_MA>;

		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;

	};



	usb0_id_detect_pin: usb0_id_detect_pin@0 {

		allwinner,pins = "PH8";

		allwinner,function = "gpio_in";