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arm64: dts: samsung,coreprimevelte: add touchscreen

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Bind touchscreen for the samsung,coreprimevelte smartphone. The
downstream code sets the VDD voltage to the exact value of 3.1 V,
however it's been empirically verified that the lower bound used here
sufficies for the proper operation of the chip and is thus used for
power-saving purposes.

Signed-off-by: Karel Balej <balejk@matfyz.cz>
Reviewed-by: Duje Mihanović <duje@dujemihanovic.xyz>
Signed-off-by: Duje Mihanović <duje@dujemihanovic.xyz>
This commit is contained in:
Karel Balej
2025-08-28 11:49:03 +02:00
committed by Duje Mihanović
parent 66595c1ad8
commit ec958b5b18
1 changed files with 15 additions and 0 deletions
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15
arch/arm64/boot/dts/marvell/mmp/pxa1908-samsung-coreprimevelte.dts
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@@ -311,6 +311,11 @@
wakeup-source;
regulators {
ldo2: ldo2 {
regulator-min-microvolt = <1900000>;
regulator-max-microvolt = <3100000>;
};
ldo6: ldo6 {
regulator-boot-on;
regulator-min-microvolt = <1200000>;
@@ -328,6 +333,16 @@
&twsi3 {
status = "okay";
touchscreen@50 {
compatible = "imagis,ist3032c";
reg = <0x50>;
interrupt-parent = <&gpio>;
interrupts = <72 IRQ_TYPE_EDGE_FALLING>;
vdd-supply = <&ldo2>;
touchscreen-size-x = <480>;
touchscreen-size-y = <800>;
};
};
&usb {