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// SPDX-License-Identifier: GPL-2.0 OR MIT
/*
* Copyright (C) 2021 StarFive Technology Co., Ltd.
* Copyright (C) 2021 Emil Renner Berthing <kernel@esmil.dk>
*/
/dts-v1/;
#include "jh7100-common.dtsi"
/ {
model = "StarFive VisionFive V1";
compatible = "starfive,visionfive-v1", "starfive,jh7100";
gpio-restart {
compatible = "gpio-restart";
gpios = <&gpio 63 GPIO_ACTIVE_HIGH>;
priority = <224>;
};
};
&gmac {
phy-handle = <&phy>;
};
/*
* The board uses a Motorcomm YT8521 PHY supporting RGMII-ID, but requires
* manual adjustment of the RX internal delay to work properly. The default
* RX delay provided by the driver (1.95ns) is too high, but applying a 50%
* reduction seems to mitigate the issue.
*
* It is worth noting the adjustment is not necessary on BeagleV Starlight SBC,
* which uses a Microchip PHY. Hence, most likely the Motorcomm PHY is the one
* responsible for the misbehaviour, not the GMAC.
*/
&mdio {
phy: ethernet-phy@0 {
reg = <0>;
rx-internal-delay-ps = <900>;
};
};
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