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([106.250.177.234]) by smtp.googlemail.com with ESMTPSA id 98e67ed59e1d1-32330f8309asm13542871a91.4.2025.08.19.00.55.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Aug 2025 00:55:27 -0700 (PDT) From: Dongjin Kim To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner 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 Message-Id: <20250819075522.2238643-1-tobetter@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250819_005529_110728_F1FB9B67 X-CRM114-Status: GOOD ( 11.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 --- 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