Commit cbd4af08 authored by Nícolas F. R. A. Prado's avatar Nícolas F. R. A. Prado Committed by Matthias Brugger
Browse files

arm64: dts: mediatek: asurada: Add I2C touchscreen 



All machines of the Asurada platform have a touchscreen at address 0x10
in the I2C0 bus, but the devices vary: Spherion has the Elan eKTH3500
touchscreen, while Hayato has a generic HID-over-i2c touchscreen.

Add common support for the touchscreens on the platform and the
specifics in each board file.

Signed-off-by: default avatarNícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: default avatarChen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20220629155956.1138955-12-nfraprado@collabora.com


Signed-off-by: default avatarMatthias Brugger <matthias.bgg@gmail.com>
parent e031715a

arch/arm64/boot/dts/mediatek/mt8192-asurada-hayato-r1.dts

+7 −0
Original line number Diff line number Diff line
@@ -38,3 +38,10 @@ MATRIX_KEY(0x00, 0x04, KEY_VOLUMEUP) 
		CROS_STD_MAIN_KEYMAP

	>;

};



&touchscreen {

	compatible = "hid-over-i2c";

	post-power-on-delay-ms = <10>;

	hid-descr-addr = <0x0001>;

	vdd-supply = <&pp3300_u>;

};

arch/arm64/boot/dts/mediatek/mt8192-asurada-spherion-r0.dts

+4 −0
Original line number Diff line number Diff line
@@ -40,3 +40,7 @@ MATRIX_KEY(0x00, 0x04, KEY_VOLUMEUP) 
		CROS_STD_MAIN_KEYMAP

	>;

};



&touchscreen {

	compatible = "elan,ekth3500";

};

arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi

+25 −0
Original line number Diff line number Diff line
@@ -92,6 +92,13 @@ &i2c0 { 
	clock-frequency = <400000>;

	pinctrl-names = "default";

	pinctrl-0 = <&i2c0_pins>;



	touchscreen: touchscreen@10 {

		reg = <0x10>;

		interrupts-extended = <&pio 21 IRQ_TYPE_LEVEL_LOW>;

		pinctrl-names = "default";

		pinctrl-0 = <&touchscreen_pins>;

	};

};



&i2c1 {
@@ -454,6 +461,24 @@ pins-int-n { 
			bias-pull-up = <MTK_PUPD_SET_R1R0_11>;

		};

	};



	touchscreen_pins: touchscreen-default-pins {

		pins-irq {

			pinmux = <PINMUX_GPIO21__FUNC_GPIO21>;

			input-enable;

			bias-pull-up;

		};



		pins-reset {

			pinmux = <PINMUX_GPIO137__FUNC_GPIO137>;

			output-high;

		};



		pins-report-sw {

			pinmux = <PINMUX_GPIO138__FUNC_GPIO138>;

			output-low;

		};

	};

};



&spi1 {