linux-kernel - [PATCH 5.4 04/47] arm64: dts: allwinner: orangepi-zero-plus: fix PHY mode

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Message-Id: <20211227151320.940634183@linuxfoundation.org>
Date:   Mon, 27 Dec 2021 16:30:40 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Chen-Yu Tsai <wens@...e.org>,
        Ron Goossens <rgoossens@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Robert Marko <robert.marko@...tura.hr>,
        Maxime Ripard <maxime@...no.tech>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 04/47] arm64: dts: allwinner: orangepi-zero-plus: fix PHY mode

From: Robert Marko <robert.marko@...tura.hr>

[ Upstream commit 08d2061ff9c5319a07bf9ca6bbf11fdec68f704a ]

Orange Pi Zero Plus uses a Realtek RTL8211E RGMII Gigabit PHY, but its
currently set to plain RGMII mode meaning that it doesn't introduce
delays.

With this setup, TX packets are completely lost and changing the mode to
RGMII-ID so the PHY will add delays internally fixes the issue.

Fixes: a7affb13b271 ("arm64: allwinner: H5: Add Xunlong Orange Pi Zero Plus")
Acked-by: Chen-Yu Tsai <wens@...e.org>
Tested-by: Ron Goossens <rgoossens@...il.com>
Tested-by: Samuel Holland <samuel@...lland.org>
Signed-off-by: Robert Marko <robert.marko@...tura.hr>
Signed-off-by: Maxime Ripard <maxime@...no.tech>
Link: https://lore.kernel.org/r/20211117140222.43692-1-robert.marko@sartura.hr
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus.dts b/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus.dts
index db6ea7b58999b..19f930f43936e 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus.dts
@@ -72,7 +72,7 @@
 	pinctrl-0 = <&emac_rgmii_pins>;
 	phy-supply = <&reg_gmac_3v3>;
 	phy-handle = <&ext_rgmii_phy>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	status = "okay";
 };
 
-- 
2.34.1