u-boot/arch/arm/dts/meson-gxbb-nanopi-k2-u-boot.dtsi
Christian Hewitt e0638f1d09 arm64: dts: meson: nanopi-k2: readd PHY reset properties
The sync of device-tree/bindings in 11a48a5a18c6 ("Linux 5.6-rc2") causes
Ethernet to break on some GXBB boards; the PHY seems to need proper reset
timing to function in u-boot and Linux. Re-add the old PHY reset binding
for dwmac until we support new bindings in the PHY node. This borrows the
same fix applied to the Odroid C2 board [0].

[0] https://lists.denx.de/pipermail/u-boot/2021-April/446658.html

Fixes: dd5f2351e9 ("arm64: dts: meson: sync dt and bindings from v5.6-rc2")
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Link: https://lore.kernel.org/r/20221025143205.14470-1-christianshewitt@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2022-11-22 18:53:21 +01:00

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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2019 BayLibre, SAS.
* Author: Neil Armstrong <narmstrong@baylibre.com>
*/
#include "meson-gx-u-boot.dtsi"
&ethmac {
snps,reset-gpio = <&gpio GPIOZ_14 0>;
snps,reset-delays-us = <0 10000 1000000>;
snps,reset-active-low;
};