From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2D9C3606EE90 for ; Thu, 5 Nov 2026 15:47:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=Gh+JEZM5; dkim=fail reason="signature verification failed" (1024-bit key, unprotected) header.d=lunn.ch header.i=@lunn.ch header.a=rsa-sha256 header.s=20171124 header.b=Ceyf4Xm5 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Unsubscribe-Post:List-Owner; bh=uKgCwPx0XcVlKQatI7uQ08zv+nNRGJomiJbLaZj7TUg=; b=Gh+JEZM5me4bfJgv/qR9c60W9+ 9uKcWIF44lX6+wUGCRMGkw19CKgQBRqqpah5OLRaj4ApD80ibrbxBD1M5tXYQFce2CDEGcswHIVVS nv6HPr7wh7BCxkinEalCvZ8Ok3rVIgSINRx1dIbcWt7mJ2O5I1fHwDOc4PIBOP5YaZHivV/L6LBaq nXE0W+JkWXcrRpQk5cELvs7MbBhvEXFDjmhYV8r20YYOmWgNr0z+L0h+IYM8Byb5CR1j4p+xB3B5M 4WCHPl6JuWHncxKOl4I7XgSqOJjUZx0XWHcdi4rzgtyKC8uMxfSnN3sTwm1hI09s2M47slZwbFjiz zlrH1JXg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xOzgt-00000009Rdo-0nC5; Thu, 05 Nov 2026 15:47:51 +0000 Received: from vps0.lunn.ch ([156.67.10.101]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xOzga-00000009RUl-3wJu; Thu, 05 Nov 2026 15:47:42 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Disposition:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:From:Sender:Reply-To:Subject: Date:Message-ID:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:Content-Disposition:In-Reply-To:References; bh=uKgCwPx0XcVlKQatI7uQ08zv+nNRGJomiJbLaZj7TUg=; b=Ceyf4Xm52NX4OwB72Ect2eiM7X 1cEqc5wfLUp+UwbStmw7W94MMj2xX13JYiLLorkfN0fR+GhozHAGoPdi+DgbQ9OMRkg6JxXq4D7Ls EL8ryhx0XKBwFa7SNFMLfLXQ30fKrjmBG76UpjTsnfWNXeR6GFS1HfZvfr78O8vJkxKw=; Received: from andrew by vps0.lunn.ch with local (Exim 4.94.2) (envelope-from ) id 1xOzgG-00EbAL-VP; Thu, 05 Nov 2026 16:47:12 +0100 Date: Thu, 5 Nov 2026 16:47:12 +0100 From: Andrew Lunn To: Lucas Tanure Cc: xianwei.zhao@amlogic.com, Andrew Lunn , davem@davemloft.net, Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Maxime Chevallier , Maxime Coquelin , Alexandre Torgue , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 4/7] net: stmmac: dwmac-meson8b: follow the generic RGMII delay rules on the T7 Message-ID: References: <20261103163715.385394-1-tanure@linux.com> <20261103163715.385394-5-tanure@linux.com> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261103163715.385394-5-tanure@linux.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261105_074733_158671_F6C89766 X-CRM114-Status: GOOD ( 10.89 ) X-Spam-Score: -2.1 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-8.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Tue, Nov 03, 2026 at 04:37:12PM +0000, Lucas Tanure wrote: > The delay code reads phy-mode as the list of delays this glue has to > add, falls back to a 2ns transmit delay when no property asks for one, > and takes the vendor delay properties. ethernet-controller.yaml says > the opposite: the PHY adds the 2ns delays, and the MAC properties only > hold small fine tuning added on top. Every board in the tree depends on > the old reading, so it stays as it is. > > No T7 board uses this glue yet, so the T7 gets a path of its own that > follows the generic rules: the receive delay line is fine tuning in > 200ps steps, and the transmit side, a quarter-period phase step, offers > none, so the transmit property is refused. > > Assisted-by: LLM > Signed-off-by: Lucas Tanure Reviewed-by: Andrew Lunn Andrew