From: Heiko Stuebner <heiko@sntech.de>
To: Miguel Jesus Seron Gonzalez <info@gluon.es>
Cc: Heiko Stuebner <heiko@sntech.de>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Dongjin Kim <tobetter@gmail.com>, Chukun Pan <amadeus@jmu.edu.cn>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] arm64: dts: rockchip: odroid-m1: use rgmii-id for gmac0
Date: Sun, 1 Nov 2026 23:16:10 +0100 [thread overview]
Message-ID: <179357136499.4108155.904162787901062784.b4-ty@b4> (raw)
In-Reply-To: <20261019192254.6933-1-info@gluon.es>
On Mon, 19 Oct 2026 21:22:54 +0200, Miguel Jesus Seron Gonzalez wrote:
> The gmac0 node uses phy-mode "rgmii" with the MAC delays
> tx_delay = <0x4f> and rx_delay = <0x2d>. On some boards this TX delay
> does not work at 1000 Mbit/s. Dongjin Kim reported iperf3 throughput
> below 200 Mbit/s on REV 1.0 20220613 boards. On a REV 1.0 20211112
> board, TX from the board stalls completely in iperf3 and ping loss
> grows with frame size (5% at 56 bytes, 20% at 1472 bytes), while RX is
> unaffected. Other boards work with the current value, so it seems to
> be marginal rather than wrong everywhere.
>
> [...]
Applied, thanks!
[1/1] arm64: dts: rockchip: odroid-m1: use rgmii-id for gmac0
commit: 781227c237f16eaf14c57124cca854a5faf8a121
Best regards,
--
Heiko Stuebner <heiko@sntech.de>
prev parent reply other threads:[~2026-11-01 22:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-19 19:22 Miguel Jesus Seron Gonzalez
2026-10-19 21:12 ` Andrew Lunn
2026-11-01 22:16 ` Heiko Stuebner [this message]
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