arch/arm/boot/dts/armada-xp-db-dxbc2.dts

// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
 * Device Tree file for DB-DXBC2 board
 *
 * Copyright (C) 2016 Allied Telesis Labs
 *
 * Based on armada-xp-db.dts
 *
 * Note: this Device Tree assumes that the bootloader has remapped the
 * internal registers to 0xf1000000 (instead of the default
 * 0xd0000000). The 0xf1000000 is the default used by the recent,
 * DT-capable, U-Boot bootloaders provided by Marvell. Some earlier
 * boards were delivered with an older version of the bootloader that
 * left internal registers mapped at 0xd0000000. If you are in this
 * situation, you should either update your bootloader (preferred
 * solution) or the below Device Tree should be adjusted.
 */

/dts-v1/;
#include "armada-xp-98dx4251.dtsi"

/ {
	model = "Marvell Bobcat2 Evaluation Board";
	compatible = "marvell,db-dxbc2", "marvell,armadaxp-98dx4251", "marvell,armada-370-xp";

	chosen {
		bootargs = "console=ttyS0,115200 earlyprintk";
	};

	memory {
		device_type = "memory";
		reg = <0 0x00000000 0 0x20000000>; /* 512 MB */
	};

};

&devbus_bootcs {
	status = "okay";

	/* Device Bus parameters are required */

	/* Read parameters */
	devbus,bus-width    = <16>;
	devbus,turn-off-ps  = <60000>;
	devbus,badr-skew-ps = <0>;
	devbus,acc-first-ps = <124000>;
	devbus,acc-next-ps  = <248000>;
	devbus,rd-setup-ps  = <0>;
	devbus,rd-hold-ps   = <0>;

	/* Write parameters */
	devbus,sync-enable = <0>;
	devbus,wr-high-ps  = <60000>;
	devbus,wr-low-ps   = <60000>;
	devbus,ale-wr-ps   = <60000>;
};

&i2c0 {
	clock-frequency = <100000>;
	status = "okay";
};

&uart0 {
	status = "okay";
};

&uart1 {
	status = "okay";
};

&nand_controller {
	status = "okay";

	nand@0 {
		reg = <0>;
		label = "pxa3xx_nand-0";
		nand-rb = <0>;
		marvell,nand-keep-config;
		nand-on-flash-bbt;
		nand-ecc-strength = <4>;
		nand-ecc-step-size = <512>;
	};
};

&sdio {
	pinctrl-0 = <&sdio_pins>;
	pinctrl-names = "default";
	status = "okay";
	/* No CD or WP GPIOs */
	broken-cd;
};

&spi0 {
	status = "okay";

	spi-flash@0 {
		#address-cells = <1>;
		#size-cells = <1>;
		compatible = "m25p64";
		reg = <0>; /* Chip select 0 */
		spi-max-frequency = <20000000>;
		m25p,fast-read;

		partition@u-boot {
			reg = <0x00000000 0x00100000>;
			label = "u-boot";
		};
		partition@u-boot-env {
			reg = <0x00100000 0x00040000>;
			label = "u-boot-env";
		};
		partition@unused {
			reg = <0x00140000 0x00ec0000>;
			label = "unused";
		};

	};
};