diff options
| author | Nícolas F. R. A. Prado <nfraprado@collabora.com> | 2022-06-29 11:59:48 -0400 |
|---|---|---|
| committer | Matthias Brugger <matthias.bgg@gmail.com> | 2022-07-07 16:39:17 +0200 |
| commit | cbd4af081a216025dd5c8a8f6a653c47c8a02353 (patch) | |
| tree | f8a9ac73e26665b7da0e1f197ffae252fc9e5590 | |
| parent | e031715a7027c63e0f722a0a4d844c3d9c020b71 (diff) | |
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: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20220629155956.1138955-12-nfraprado@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
3 files changed, 36 insertions, 0 deletions
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 @@ 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 @@ 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 4de4235cb768..6eace280c14a 100644 --- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi @@ -92,6 +92,13 @@ 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 @@ 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 { |