boards/shields/waveshare_epaper/dts/waveshare_epaper_common.dtsi

/*
 * Copyright (c) 2020 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: Apache-2.0
 */

&arduino_spi {
	status = "okay";
	cs-gpios = <&arduino_header 16 GPIO_ACTIVE_LOW>,	/* D10 */
		   <&arduino_header 12 GPIO_ACTIVE_LOW>;	/* D04 */

	sdhc0: sdhc@1 {
		compatible = "zephyr,mmc-spi-slot";
		reg = <1>;
		status = "okay";
		label = "SDHC0";
		spi-max-frequency = <24000000>;
	};
};