From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-vk1-f174.google.com (mail-vk1-f174.google.com [209.85.221.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CD17F2EB5A9 for ; Thu, 22 Jan 2026 00:31:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.174 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769041891; cv=none; b=qohQZ0CM8SwAayXfFHH0irUOdV1BiefHE+kD2kyoxsyYqoIFyt8kHDNc1ARJYM9fRaU9s8NAiEuQv4lxw+vrwqx1hbJXHvXFmm0Bu//qHmZcaLqz0ssgidU7yoUTOXJQ1oBeejCkITkBl1De5eJ+21Aa2U6lMzmGYnB2o1SJOa8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769041891; c=relaxed/simple; bh=wAtMZUK4FV7iRWMYfcVdkDkwpZkU2TSPElEoKPCQOFs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=WWKQO8DhVH8VgQ/m0vWYa3elTU4VN7aa924sazuQww2DWDi0qo6ULzMRB4eylARcu5Epa/k15DyJKHkQFUe2HKZmyhVKp5uxy5BvoDEtv4EOxyOQ2o6kqG0yd/B+geFaMXKiX2twa8PR0oySbsGaPVuQrKGZIztSPINA2MqgenE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=e1SSKs8Z; arc=none smtp.client-ip=209.85.221.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="e1SSKs8Z" Received: by mail-vk1-f174.google.com with SMTP id 71dfb90a1353d-5636784883bso320592e0c.3 for ; Wed, 21 Jan 2026 16:31:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1769041888; x=1769646688; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=tzXSISnrF9gPuh5VrYor9F9pE35gc9wpvxNp6irLpQw=; b=e1SSKs8Z7DQAvcYX+FrUpWf+F1GxsD/Vr7ScRg96dhzwA03fH+LnxBC2WKEofcLFBG Wr8F8R3cGbKBsgIIgHQ3++XiHneHO24ydG+VYJPQDI1lrk6a9dXI6+P5r4TpQebTcIvY HEr09pLm14UaazRrqMYh+NTzZShrpwuB4ZREBM3GfLz53DDEtNG6liYC+zFt24lV22vh GHOt3DggKT057FTek60ObXTq/vCoBvG3/DLSRyKnYdMotICmhPnaIvdA//oP/DeXfzQg uNWvmRHrSdCwwM4cfCgjRhhqn/DuFUEIb2XM+kqKuk7AWtm7HNiAVHTfhjg0QRxOS8Si 3FDw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769041888; x=1769646688; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=tzXSISnrF9gPuh5VrYor9F9pE35gc9wpvxNp6irLpQw=; b=G3Sz5TWa5XraLNz/HKIyPKfZvAyBq0hQcM7pD/BhenCVgUB0Fk9q5maNn2mEhvn8Vb ITcwKBGvsceebcmfjyr3sqOOaZOmdCLoyiwd0i/Ztjj6ArWWm+yJ0AZd6hR0LwAJfvro AOgojCU14nTyYpsxsW7QX9TNy9wyk9aqR+g0z0ZBAj1hugjE8KZejNnRvJwFXPMX977X BjNkAnSJzcyU12SDoG9ltF/qAUKouBOefaT1MaQX1LhIntPjKYAe6H7hdXVQqfXAF5lw 4eUqoveXRSUq1xrs1wJ+h22VMHJbtHuNZIRIaFJobyqo07sEQB001Uh2aHUU2usIX7QT jj2A== X-Forwarded-Encrypted: i=1; AJvYcCWA3ksfO1Rs7GqSosE+j2ncTRXDgdRYXyLiCsm6JbG7vFKpZ+nQr0oKl8N/CgvTWZofjWbUXUWcVxjK@vger.kernel.org X-Gm-Message-State: AOJu0YyafHqJ49XVYkNV35F7aUg3CrTin44mwFjcTQsX3pfBv3e9WPrU tcEFuN7Y6xJN319CbMcRkFgV6pGq9/P4rIeDY/T650lhhV0ji/m0eNgznvHBcjXS X-Gm-Gg: AZuq6aKIohpI8n0IjOakz4oCLG5ZG4gvynSTlGcRecFvDvMdl0jEwaOhP/iZATx31SQ oABkPE2R97Z3z5maxeuAewePqdA16LJ6suRgMSn0HbFgl4H5dsd9q1Dj1qi616Haj46n/wt001o yYMYzsZYwtE5MEUqEI9TK7NGN+oArbhpckGtjzsGIh+7GQbI9B81WByotas7PDxI5ICOcHutJyd rbHAVhyP87qS8DIRT5BT6bi4kiioOrGxwtk+cIB3BzA93lgS6B4CuMUFiet/2fxPvuefrktbhHl GvCWSvVkNkQ54WzaF3dL6AoLmh6PWPV6YDpeAfJVeb3jv+y5NNQxJarzzu5TskFPhgcQZdhMIMP 9MiP5uDjiLZU1W2UujbXRGCgqCHa+YRzzLsBWy6TEi0CZKw1obpqdSCZ0+js+AAuyO1kCgWtvt4 ZJd9Ov/t6OZw== X-Received: by 2002:a05:7300:bc08:b0:2ae:5470:2e61 with SMTP id 5a478bee46e88-2b6b46c68e2mr15434088eec.2.1769034989298; Wed, 21 Jan 2026 14:36:29 -0800 (PST) Received: from localhost ([2001:19f0:ac00:4eb8:5400:5ff:fe30:7df3]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2b6b3503a30sm25165715eec.13.2026.01.21.14.36.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Jan 2026 14:36:28 -0800 (PST) Date: Thu, 22 Jan 2026 06:36:18 +0800 From: Inochi Amaoto To: "Russell King (Oracle)" , Inochi Amaoto Cc: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Maxime Coquelin , Alexandre Torgue , Richard Cochran , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Yanteng Si , Yao Zi , Vladimir Oltean , Lad Prabhakar , Choong Yong Liang , Maxime Chevallier , Chen-Yu Tsai , Shangjuan Wei , Boon Khai Ng , Quentin Schulz , Giuseppe Cavallaro , Jose Abreu , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Longbin Li Subject: Re: [PATCH net-next 3/3] net: stmmac: Add glue layer for Spacemit K3 SoC Message-ID: References: <20260120043609.910302-1-inochiama@gmail.com> <20260120043609.910302-4-inochiama@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Wed, Jan 21, 2026 at 12:03:36PM +0000, Russell King (Oracle) wrote: > On Tue, Jan 20, 2026 at 01:05:39PM +0800, Inochi Amaoto wrote: > > > > + mask = RGMII_RX_DLINE_STEP | RGMII_TX_DLINE_CODE | RGMII_TX_DLINE_EN | > > > > + RGMII_TX_DLINE_STEP | RGMII_RX_DLINE_CODE | RGMII_RX_DLINE_EN; > > > > + val = FIELD_PREP(RGMII_TX_DLINE_CODE, tx_config) | > > > > + FIELD_PREP(RGMII_TX_DLINE_CODE, tx_code) | RGMII_TX_DLINE_EN | > > > > + FIELD_PREP(RGMII_TX_DLINE_CODE, rx_config) | > > > > + FIELD_PREP(RGMII_RX_DLINE_CODE, rx_code) | RGMII_RX_DLINE_EN; > > > > > > These FIELD_PREP() fields look wrong. Did you mean to use DLINE_CODE > > > both tx_config and tx_code, and did you mean to use TX_DLINE_CODE for > > > rx_config ? > > > > > > > This should be RGMII_TX_DLINE_CODE. This is a copy paste error, I > > will fix it. > > Are you sure? > > In that case, please change this to: > > val = FIELD_PREP(RGMII_TX_DLINE_CODE, tx_config | tx_code | > rx_config | rx_code) | > RGMII_TX_DLINE_EN | RGMII_RX_DLINE_EN; > > If that isn't what you meant, then your reply is wrong, and it seems > you're confused, which makes me then question how reliable your > replies are. > That's wrong, I think I have reply it in a wrong way, it should be RGMII_TX_DLINE_STEP -> tx_config RGMII_TX_DLINE_CODE -> tx_code RGMII_RX_DLINE_STEP -> rx_config RGMII_RX_DLINE_CODE -> rx_code The RGMII_[RX|TX]_DLINE_STEP register selects which step is used for rx/tx delay. The RGMII_[RX|TX]_DLINE_CODE register provides the factor used for calculating the delay. These register are computed in the spacemit_dwmac_detected_delay_value(). And finally we can got a delay with "code * step / 10 * 0.9" for both rx and tx. Regards, Inochi > > > > + plat_dat->clk_tx_i = devm_clk_get_enabled(&pdev->dev, "tx"); > > > > + if (IS_ERR(plat_dat->clk_tx_i)) > > > > + return dev_err_probe(&pdev->dev, PTR_ERR(plat_dat->clk_tx_i), > > > > + "failed to get tx clock\n"); > > > > > > You set plat_dat->clk_tx_i, but you don't point > > > plat_dat->set_clk_tx_rate at anything, which means the stmmac core > > > does nothing with this. > > > > > > > Yes, the vendor told me that the internal tx clock rate will be auto > > changed when the speed rate is changed. So no software interaction > > is needed. > > Please do not assign a clock to clk_tx_i that is not the dwmac > clk_tx_i input. clk_tx_i is a name used by the Synopsys DWMAC for a > specific clock. > > As you don't need to do anything with it other than to get and enable > it, consider using just a local variable here. > > -- > RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ > FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!