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[82.67.6.57]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49fe5cd4c8dsm64643045e9.3.2026.09.24.01.53.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Sep 2026 01:54:00 -0700 (PDT) From: Jerome Brunet To: Andrew Lunn Cc: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Richard Cochran , Maxime Ripard , Maxime Coquelin , Alexandre Torgue , Philipp Zabel , Maxime Chevallier , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, Andre Przywara Subject: Re: [PATCH net-next v3 3/5] net: stmmac: sun55i: Make the delay step configurable In-Reply-To: <26334006-a2af-49d3-8f26-18cd44118c6b@lunn.ch> References: <20260923-allwinner-a733-gmac-support-v3-0-15735155a789@baylibre.com> <20260923-allwinner-a733-gmac-support-v3-3-15735155a789@baylibre.com> <26334006-a2af-49d3-8f26-18cd44118c6b@lunn.ch> Date: Thu, 24 Sep 2026 10:53:59 +0200 Message-ID: <1j4iff9gig.fsf@starbuckisacylon.baylibre.com> MIME-Version: 1.0 Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260924_015402_614681_F31C4819 X-CRM114-Status: GOOD ( 12.66 ) 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 On jeu. 24 sept. 2026 at 04:30, Andrew Lunn wrote: >> + * Correcting them would break the DT ABI of the published DTs. >> + */ >> + .txdly_step_ps = 100, >> + .rxdly_step_ps = 100, > > Could you be a bit more specific about what published means? DTs like those ones: * https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/allwinner/sun55i-a527-cubie-a5e.dts?h=v7.3-rc4#n88 * https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts?h=v7.3-rc4#n87 * https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts?h=v7.3-rc4#n106 On A523/T527, only gmac1 is supported by the driver addressed in this series. gmac0 is another (dwmac) driver. If I take the 1st example &gmac1 { phy-mode = "rgmii-id"; phy-handle = <&ext_rgmii1_phy>; phy-supply = <®_cldo4>; tx-internal-delay-ps = <300>; rx-internal-delay-ps = <400>; status = "okay"; }; If the information we've got about the A523 delay steps are correct, the actual values would be: * tx: 540ps * rx: 2120ps So I suppose in this case, the phy-mode is more likely to be rgmii-txid, isn't it ? > > Andrew -- Jerome