Select pin properties from shield overlay

[pideu-sj]

Hi everyone,
I have a question regarding the selection of pin properties like bias-pull-up, when using a shield. Is there a possibility, to add a pinctrl configuration to a shield overlay, that tells e.g. the i2c0_default node, that he should use a pull up resistor? The only option, came to my mind is to adding a pinctrl alternative like this in the shield overlay:

&arduino_i2c {
	status = "okay";
	pinctrl-0 = <&i2c0_default_alt>;
	pinctrl-1 = <&i2c0_sleep_alt>;
	pinctrl-names = "default", "sleep";
	amg88xx_amg88xx_grid_eye_eval_shield: amg88xx@68 {
		compatible = "panasonic,amg88xx";
		reg = <0x68>;
		/* Pin D2 from Arduino Connector */
		int-gpios = <&arduino_header 8 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
		status = "okay";
	};
};

&pinctrl {
	i2c0_default_alt: i2c0_default_alt {
		group1 {
			psels = <NRF_PSEL(TWIM_SDA, 0, 26)>,
				<NRF_PSEL(TWIM_SCL, 0, 27)>;
			bias-pull-up;
		};
	};

	i2c0_sleep_alt: i2c0_sleep_alt {
		group1 {
			psels = <NRF_PSEL(TWIM_SDA, 0, 26)>,
				<NRF_PSEL(TWIM_SCL, 0, 27)>;
			low-power-enable;
		};
	};
};

But the problem is, that psels is required inside group1. So I would overwrite the pin numbers for SDA and SCL in previous example code.

When looking from the perspective of the shield, it does not know, which board is used, so I can not simply overwrite with some pin number, that won't fit for every board underneath the shield. So I have somehow reference to the psels pin number of the board? Is this somehow possible, or are there any other ways, to enable a pull-up from a shield overlay?