How to connect other sensor to nrf9160 (i2c and GPIO)

Hi, 

I want to connect LDC2114 to nRF9160. I write the nrf9160dk_nrf9160_ns.overlay and the astri,ldc2114.yaml. I don't know how to set GPIOs in &i2c1 - ldc2114: ldc2114@2a which are the output pins of LDC2114 and input pins of nRF9160.

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/ {
/* Map the devices to the aliases of the application. */
aliases {
ldc-sensor = &ldc2114;
};
};
&i2c1 {
compatible = "nordic,nrf-twim";
#address-cells = < 0x1 >;
#size-cells = < 0x0 >;
reg = < 0x9000 0x1000 >;
// clock-frequency = < 0x186a0 >;
clock-frequency = <I2C_BITRATE_STANDARD>;
interrupts = < 0x9 0x1 >;
status = "okay";
pinctrl-0 = < &i2c1_default >;
pinctrl-1 = < &i2c1_sleep >;
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

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# Copyright (c) 2018, Peter Bigot Consulting, LLC
# SPDX-License-Identifier: Apache-2.0
description: Sensor LDC2114
compatible: "astri,ldc2114"
include: [sensor-device.yaml, i2c-device.yaml, gpio-controller.yaml, base.yaml]
properties:
reg:
required: true
#alert-gpios:
"#gpio-cells":
const: 2
intb-gpios:
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Also, What else should I do in order to connect the devices?

Best regards,

Liza