1ab8ec079SCristian Ciocaltea// SPDX-License-Identifier: GPL-2.0 OR MIT 2ab8ec079SCristian Ciocaltea/* 3ab8ec079SCristian Ciocaltea * Copyright (C) 2021 StarFive Technology Co., Ltd. 4ab8ec079SCristian Ciocaltea * Copyright (C) 2021 Emil Renner Berthing <kernel@esmil.dk> 5ab8ec079SCristian Ciocaltea */ 6ab8ec079SCristian Ciocaltea 7ab8ec079SCristian Ciocaltea/dts-v1/; 8ab8ec079SCristian Ciocaltea#include "jh7100-common.dtsi" 9ab8ec079SCristian Ciocaltea 10ab8ec079SCristian Ciocaltea/ { 11ab8ec079SCristian Ciocaltea model = "StarFive VisionFive V1"; 12ab8ec079SCristian Ciocaltea compatible = "starfive,visionfive-v1", "starfive,jh7100"; 13ab8ec079SCristian Ciocaltea 14ab8ec079SCristian Ciocaltea gpio-restart { 15ab8ec079SCristian Ciocaltea compatible = "gpio-restart"; 16ab8ec079SCristian Ciocaltea gpios = <&gpio 63 GPIO_ACTIVE_HIGH>; 17ab8ec079SCristian Ciocaltea priority = <224>; 18ab8ec079SCristian Ciocaltea }; 19ab8ec079SCristian Ciocaltea}; 20*e16d3dc0SCristian Ciocaltea 21*e16d3dc0SCristian Ciocaltea&gmac { 22*e16d3dc0SCristian Ciocaltea phy-handle = <&phy>; 23*e16d3dc0SCristian Ciocaltea}; 24*e16d3dc0SCristian Ciocaltea 25*e16d3dc0SCristian Ciocaltea/* 26*e16d3dc0SCristian Ciocaltea * The board uses a Motorcomm YT8521 PHY supporting RGMII-ID, but requires 27*e16d3dc0SCristian Ciocaltea * manual adjustment of the RX internal delay to work properly. The default 28*e16d3dc0SCristian Ciocaltea * RX delay provided by the driver (1.95ns) is too high, but applying a 50% 29*e16d3dc0SCristian Ciocaltea * reduction seems to mitigate the issue. 30*e16d3dc0SCristian Ciocaltea * 31*e16d3dc0SCristian Ciocaltea * It is worth noting the adjustment is not necessary on BeagleV Starlight SBC, 32*e16d3dc0SCristian Ciocaltea * which uses a Microchip PHY. Hence, most likely the Motorcomm PHY is the one 33*e16d3dc0SCristian Ciocaltea * responsible for the misbehaviour, not the GMAC. 34*e16d3dc0SCristian Ciocaltea */ 35*e16d3dc0SCristian Ciocaltea&mdio { 36*e16d3dc0SCristian Ciocaltea phy: ethernet-phy@0 { 37*e16d3dc0SCristian Ciocaltea reg = <0>; 38*e16d3dc0SCristian Ciocaltea rx-internal-delay-ps = <900>; 39*e16d3dc0SCristian Ciocaltea }; 40*e16d3dc0SCristian Ciocaltea}; 41