xref: /src/sys/arch/arm/dts/sun8i-h2-plus-bananapi-p2-zero.dts

/* $NetBSD: sun8i-h2-plus-bananapi-p2-zero.dts,v 1.1.2.2 2019/06/10 22:05:53 christos Exp $ */

/*-
 * Copyright (c) 2019 Jason R. Thorpe
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * Device tree for Banana Pi BPI-P2 Zero.  The P2 Zero is essentially an
 * M2 Zero with the following additions:
 *
 * - On-board Ethernet (with PoE capability available as an
 *   optional module).
 * - On-board eMMC module.
 */

#include "../../../external/gpl2/dts/dist/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts"

/ {
	model = "Banana Pi BPI-P2-Zero";
	compatible = "sinovoip,bpi-p2-zero", "allwinner,sun8i-h2-plus";

	aliases {
		/* ethernet0 is the H3 emac, defined in sun8i-h3.dtsi */
		ethernet0 = &emac;
	};

	leds {
		pwr_led {
			label = "bananapi-p2-zero:red:pwr";
		};
	};
};

&emac {
	phy-handle = <&int_mii_phy>;
	phy-mode = "mii";
	allwinner,leds-active-low;
	status = "okay";
};

&mmc0 {
	/*
	 * There seems to be a discrepancy between how the card-detect
	 * signal is wired up between the P2 Zero and the M2 Zero, on
	 * which the P2 Zero is based.
	 *
	 * The M2 Zero device tree file claims that early samples of
	 * the M2 Zero were wired active-low, but that the production
	 * of the board is wired active-high; as such, the M2 Zero
	 * device tree uses an active-high signal for card-detect.
	 *
	 * However, the P2 Zero has been observed in the wild to have
	 * an active-low card-detect signal.  I don't know if this is
	 * an early-vs-late situation like the M2 Zero, but for now we
	 * will configure the card-detect signal to active-low to match
	 * known samples of the board that exist in the wild.
	 */
	cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>;	/* PF6 */
};

&mmc2 {
	pinctrl-names = "default";
	pinctrl-0 = <&mmc2_8bit_pins>;
	bus-width = <8>;
	non-removable;
	status = "okay";
};