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The CTP connected to board with, - SDA, SCK from i2c1 - GPIO-LD0 as AVDD28 supply - PH4 gpio as interrupt pin - PH8 gpio as reset pin - X axis is inverted - Y axis is inverted Signed-off-by: Jagan Teki --- Changes for v3: - Use 2.8v for reg_ldo_io0 Changes for v2: - drop i2c1, bias-pull-up .../allwinner/sun50i-a64-amarula-relic.dts | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts index 3575db216016..bd31a4385bc1 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts @@ -49,6 +49,24 @@ bias-pull-up; }; +&i2c1 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c1_pins>; + status = "okay"; + + touchscreen@5d { + compatible = "goodix,gt5663"; + reg = <0x5d>; + AVDD28-supply = <®_ldo_io0>; /* VCC-CTP: GPIO0-LDO */ + interrupt-parent = <&pio>; + interrupts = <7 4 IRQ_TYPE_EDGE_FALLING>; + irq-gpios = <&pio 7 4 GPIO_ACTIVE_HIGH>; /* CTP-INT: PH4 */ + reset-gpios = <&pio 7 8 GPIO_ACTIVE_HIGH>; /* CTP-RST: PH8 */ + touchscreen-inverted-x; + touchscreen-inverted-y; + }; +}; + &mmc1 { pinctrl-names = "default"; pinctrl-0 = <&mmc1_pins>; @@ -212,6 +230,13 @@ regulator-name = "vdd-cpus"; }; +®_ldo_io0 { + regulator-min-microvolt = <2800000>; + regulator-max-microvolt = <2800000>; + regulator-name = "vcc-ctp"; + status = "okay"; +}; + ®_rtc_ldo { regulator-name = "vcc-rtc"; };