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dtoverlays: Add overlay for Ilitek-ts-i2c driver (213X/23XX/25XX chips)

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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
This commit is contained in:
Dave Stevenson
2025-11-17 16:18:52 +00:00
committed by 6by9
parent 3df21d5eaa
commit fd2dff75cd
3 changed files with 74 additions and 0 deletions
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1
arch/arm/boot/dts/overlays/Makefile
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@@ -131,6 +131,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
i2s-dac.dtbo \ i2s-dac.dtbo \
i2s-gpio28-31.dtbo \ i2s-gpio28-31.dtbo \
i2s-master-dac.dtbo \ i2s-master-dac.dtbo \
ilitek-ts-i2c.dtbo \
ilitek251x.dtbo \ ilitek251x.dtbo \
imx219.dtbo \ imx219.dtbo \
imx258.dtbo \ imx258.dtbo \

11
arch/arm/boot/dts/overlays/README
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@@ -2778,6 +2778,17 @@ Load: dtoverlay=i2s-master-dac
Params: <None> Params: <None>
Name: ilitek-ts-i2c
Info: Enables I2C connected Ilitek 23XX, 25XX, and 213X touch controllers
using GPIO 4 (pin 7 on GPIO header) for interrupt.
Load: dtoverlay=ilitek-ts-i2c,<param>=<val>
Params: interrupt GPIO used for interrupt (default 4)
invx Touchscreen inverted x axis
invy Touchscreen inverted y axis
swapxy Touchscreen swapped x y axis
i2c-path Override I2C path to allow for i2c-gpio buses
Name: ilitek251x Name: ilitek251x
Info: Enables I2C connected Ilitek 251x multiple touch controller using Info: Enables I2C connected Ilitek 251x multiple touch controller using
GPIO 4 (pin 7 on GPIO header) for interrupt. GPIO 4 (pin 7 on GPIO header) for interrupt.

62
arch/arm/boot/dts/overlays/ilitek-ts-i2c-overlay.dts Normal file
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@@ -0,0 +1,62 @@
// Device tree overlay for I2C connected Ilitek multiple touch controller
/dts-v1/;
/plugin/;
#include <dt-bindings/interrupt-controller/irq.h>
/ {
compatible = "brcm,bcm2835";
fragment@0 {
target = <&gpio>;
__overlay__ {
ili2130_pins: ili2130_pins {
brcm,pins = <4>; // interrupt
brcm,function = <0>; // in
brcm,pull = <2>; // pull-up
};
};
};
frag1: fragment@1 {
target = <&i2c1>;
__overlay__ {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
ili2130: ili2130@41 {
compatible = "ilitek,ili2130";
reg = <0x41>;
pinctrl-names = "default";
pinctrl-0 = <&ili2130_pins>;
interrupt-parent = <&gpio>;
interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
};
};
};
fragment@2 {
target = <&ili2130>;
__overlay__ {
touchscreen-inverted-x;
};
};
fragment@3 {
target = <&ili2130>;
__overlay__ {
touchscreen-inverted-y;
};
};
__overrides__ {
interrupt = <&ili2130_pins>,"brcm,pins:0",
<&ili2130>,"interrupts:0";
i2c-path = <&frag1>, "target?=0",
<&frag1>, "target-path";
invx = <0>, "-2";
invy = <0>, "-3";
swapxy = <&ili2130>,"touchscreen-swapped-x-y?";
};
};