[PATCH v3 11/16] arm64: dts: mediatek: asurada: Add I2C touchscreen
From: Nícolas F. R. A. Prado <hidden>
Date: 2022-05-12 20:57:25
Also in:
linux-devicetree, linux-mediatek, lkml
Subsystem:
arm/mediatek soc support, the rest · Maintainers:
Matthias Brugger, AngeloGioacchino Del Regno, Linus Torvalds
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: Nícolas F. R. A. Prado <redacted> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Tested-by: Chen-Yu Tsai <wenst@chromium.org> --- (no changes since v1) .../dts/mediatek/mt8192-asurada-hayato-r1.dts | 7 ++++++ .../mediatek/mt8192-asurada-spherion-r0.dts | 4 +++ .../boot/dts/mediatek/mt8192-asurada.dtsi | 25 +++++++++++++++++++ 3 files changed, 36 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada-hayato-r1.dts b/arch/arm64/boot/dts/mediatek/mt8192-asurada-hayato-r1.dts
index ca18fcf2ad4f..1e91491945f6 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada-hayato-r1.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada-hayato-r1.dts@@ -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>; +};
diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada-spherion-r0.dts b/arch/arm64/boot/dts/mediatek/mt8192-asurada-spherion-r0.dts
index 30b03895de41..42db81e95fae 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada-spherion-r0.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada-spherion-r0.dts@@ -40,3 +40,7 @@ MATRIX_KEY(0x00, 0x04, KEY_VOLUMEUP) CROS_STD_MAIN_KEYMAP >; }; + +&touchscreen { + compatible = "elan,ekth3500"; +};
diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index a63b3c86d650..d9c9852339a8 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi@@ -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 {
@@ -458,6 +465,24 @@ pins-int-n { mediatek,pull-up-adv = <3>; }; }; + + 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 {
--
2.36.1
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