[PATCH mmc/next 2/3] arm64: dts: samsung,coreprimevelte: add touchscreen
From: Karel Balej <balejk@matfyz.cz>
Date: 2025-08-24 11:02:20
Also in:
linux-devicetree, linux-mmc, lkml, phone-devel
Subsystem:
arm/marvell kirkwood and armada 370, 375, 38x, 39x, xp, 3700, 7k/8k, cn9130 soc support, arm/marvell pxa1908 soc support, the rest · Maintainers:
Andrew Lunn, Gregory Clement, Sebastian Hesselbarth, Duje Mihanović, Linus Torvalds
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> --- .../mmp/pxa1908-samsung-coreprimevelte.dts | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/arch/arm64/boot/dts/marvell/mmp/pxa1908-samsung-coreprimevelte.dts b/arch/arm64/boot/dts/marvell/mmp/pxa1908-samsung-coreprimevelte.dts
index 240021e7a371..834b2cf1a204 100644
--- a/arch/arm64/boot/dts/marvell/mmp/pxa1908-samsung-coreprimevelte.dts
+++ b/arch/arm64/boot/dts/marvell/mmp/pxa1908-samsung-coreprimevelte.dts@@ -312,6 +312,11 @@ pmic@30 { wakeup-source; regulators { + ldo2: ldo2 { + regulator-min-microvolt = <1900000>; + regulator-max-microvolt = <3100000>; + }; + ldo6: ldo6 { regulator-boot-on; regulator-min-microvolt = <1200000>;
@@ -329,6 +334,16 @@ ldo14: ldo14 { &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 {
--
2.50.1