1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/*
3 * Copyright (C) 2021 StarFive Technology Co., Ltd.
4 * Copyright (C) 2021 Emil Renner Berthing <kernel@esmil.dk>
5 */
6
7/dts-v1/;
8#include "jh7100-common.dtsi"
9
10/ {
11	model = "StarFive VisionFive V1";
12	compatible = "starfive,visionfive-v1", "starfive,jh7100";
13
14	gpio-restart {
15		compatible = "gpio-restart";
16		gpios = <&gpio 63 GPIO_ACTIVE_HIGH>;
17		priority = <224>;
18	};
19};
20
21&gmac {
22	phy-handle = <&phy>;
23};
24
25/*
26 * The board uses a Motorcomm YT8521 PHY supporting RGMII-ID, but requires
27 * manual adjustment of the RX internal delay to work properly.  The default
28 * RX delay provided by the driver (1.95ns) is too high, but applying a 50%
29 * reduction seems to mitigate the issue.
30 *
31 * It is worth noting the adjustment is not necessary on BeagleV Starlight SBC,
32 * which uses a Microchip PHY.  Hence, most likely the Motorcomm PHY is the one
33 * responsible for the misbehaviour, not the GMAC.
34 */
35&mdio {
36	phy: ethernet-phy@0 {
37		reg = <0>;
38		rx-internal-delay-ps = <900>;
39	};
40};
41