From: Dongjin Kim <tobetter@gmail.com>
To: Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Heiko Stuebner <heiko@sntech.de>
Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2] arm64: dts: rockchip: Change ethernet TXD timing delay value
Date: Tue, 19 Aug 2025 16:55:21 +0900 [thread overview]
Message-ID: <20250819075522.2238643-1-tobetter@gmail.com> (raw)
Very poor network performance is observed on the ODROID-M1 Board
(REV 1.0 20220613) when running iperf3 (under 200Mbits/sec), and
this problem can be resolved after changing the value of TXD
timing to 0x35 from 0x4f.
Signed-off-by: Dongjin Kim <tobetter@gmail.com>
---
arch/arm64/boot/dts/rockchip/rk3568-odroid-m1.dts | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/rockchip/rk3568-odroid-m1.dts b/arch/arm64/boot/dts/rockchip/rk3568-odroid-m1.dts
index 0f844806ec542..e1a550a04498e 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-odroid-m1.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-odroid-m1.dts
@@ -210,7 +210,7 @@ &gmac0_rgmii_clk
&gmac0_rgmii_bus>;
status = "okay";
- tx_delay = <0x4f>;
+ tx_delay = <0x35>;
rx_delay = <0x2d>;
};
--
2.34.1
next reply other threads:[~2025-08-19 7:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-19 7:55 Dongjin Kim [this message]
2025-08-19 15:10 ` [PATCH v2] arm64: dts: rockchip: Change ethernet TXD timing delay value Chukun Pan
2025-08-20 2:40 ` Dongjin Kim
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