From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj2-f40.google.com (mail-pj2-f40.google.com [74.125.227.168]) (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 67BA63921D1 for ; Sat, 3 Oct 2026 08:46:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.227.168 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791017203; cv=none; b=QDdtXxZoOjnw9b2AjX7JEfAwsurfkuO3rRXqEOLsZ+r+oy+pqadtUgPPO1XxAhzCiftl+3Q3AWtQJy2baWamAn/q+C1TCZndB3npYaGbeh0ErfQzPzeJNmeO7VKvi1ykBGBHmo2MgtnuZUmcHNgYHBd2rmewbkuQdh6C7JVZ95Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791017203; c=relaxed/simple; bh=JfQBFB8HvJuf4fvwAODgo8KaNTpRE8MxypcQlOdr4a4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=B+eNJsAWpoTM9hYrU2XeBFj2M5Xi+1IjCNrv/9vsjappqUJYzk2yIweKzmyxMODvCcPHrPuq1O+IMwDuJUQBBfkuISW1FYxTVEtU3JiXo9tx5ZPD6SW+WqLD04IannsFEoShFT+XhJSHolI6r5OT31U5aWQYoKeyyj3RmDK5hL0= 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=ZXn5nMU8; arc=none smtp.client-ip=74.125.227.168 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="ZXn5nMU8" Received: by mail-pj2-f40.google.com with SMTP id d9443c01a7336-2e48eb8d967so626145ad.0 for ; Sat, 03 Oct 2026 01:46:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1791017199; x=1791621999; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=t/wrLOCtE1sCCWrIKRX05ezT6tc6dZyG9f7Xo2wQXRw=; b=ZXn5nMU8EamCVde3w00PG10bd2fGLZkka6sHhvORJ6Gb/Lo8TX/g6wJRBmZ6Kkgdup wnPMdKJ2m637ZG6DgnDfz5VSf9kb8mGMLEsqnbSTGzrMPoXgcW9ZZsrHbQkDm2Fnh7on JjySkgR712hT/k96x4+D6exNpB9XGrcLnSodDcC/ERxJzvzVbT54oqmEwBw94841bSVR P0HiWJ23CwnapFH2CNRxVAy9Bz8kvSNxze1W7tGHrtnC/0ODIvww7jZbvIVDJycZlWmW 2Pxy39MfUH+kiJvArojOVMFk0ybKIIVxmZWTGEaqXR+mWQj0ilp7nk91zgwRGpdfCdtR 7uZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791017199; x=1791621999; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=t/wrLOCtE1sCCWrIKRX05ezT6tc6dZyG9f7Xo2wQXRw=; b=AofSXrAjdnZr+3f9I2ewQoslxvVGP3HtTDzqjFjWxpV7+auf5LlFMLPh2iWUTjhjNL jUKmei1TbWR3P1QK8o9a9NZrXy2+ZTNbQUcxUsXykwutIge7VGvb/hYvoIq89tDX0CBO 3bXvQRbGBkJ90ahJnCe0akT41EwoEnWoa3mE1D9o/ra2BhpD9ZQJx6qRp1OJOJEJYCfg dDTfFXb3WA4hEeU5ni3A4wlweG9u3ZxIPrHBmbNdZgHkvP9sYEluuI2MgC3QAU4/+pmv RxDSlvep07QDxR+51e4LN7VRaZU7Ie6M51YaEluiVmIgrti5HPWbQgN4V91m2ZeTqWJv ozWw== X-Forwarded-Encrypted: i=1; AKwUvBxb4WtQAUQcYgQUbyblEt0if7MrgI1ayC/+IFrc+beTRdIstJyHmoxTDyNATgOS9w5qkZfWvxOZ3gMb7MI=@vger.kernel.org X-Gm-Message-State: AFq9FYKOazDAsUJD1Z8LwFoIok9NB2vsGIpBLM0bzfeKUorypgmZgy2C MbeKlctSvS4rkNUglZn4oGwmjl7VLbIWngbO774hI5L9ScQnz1/Ygr3E X-Gm-Gg: AYBFou1B/puHnL1h8H/oDl6BLE8TJnG91TWfw1MGbOTa8qCLZ3q5t6/vfM8jZsVsbMz wK54d9nRGny8kffT6+LZtiMvytd+UnqlP+UIGEAlnSGQ3Vx9KcoFe9t69pJ1LRfGoexzo0yde8l Q6q9pvWLAX/b8vCcBoMI/5dACtrbBWGaKxZ3MOiHjxzd28kSfNcHFg+ZjRzcaVlSBDKreQjQj8t Tws8HN8VazJNBxANo7zGtsDkiHIRwESF4EfO4D4z6fb8NpbjgVqeLy0bT7qa2RxHO3OA5/BFgGP mQ038V1ZmqnRbJS8tkp1Qu8yX5qQBhqA6uOCrj9QHBtWnuz1GGPJLiwb7IniQbIWUqBqALrKq3l PIiYXMfsH3F7627YAsMjpOu36gMZPQzxiaHrxK6eq0LHNoTSz8BhUDiFw6wETwCBKwE+CLpozCj 9jMjgRHow1WzBJF0ybQh2nLTDPYGCCbsLZ9bHmjtd21fVIw6qm9vjLUccngMZVkAvCaHyd1CTP7 NXbARoO/RLv/0HSaZroe7qDcLzd5KvKcpsvrLiXh0sIE8XTgwwBe2XdtI8ifHE7KlhXeqI= X-Received: by 2002:a17:90b:4ac3:b0:3a4:9d98:f980 with SMTP id 98e67ed59e1d1-3a6ce5eb2b0mr7077989a91.1.1791017199330; Sat, 03 Oct 2026 01:46:39 -0700 (PDT) Received: from chenyou.ncku.edu.tw ([140.116.19.16]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3a78e4664ebsm2208033a91.7.2026.10.03.01.46.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 03 Oct 2026 01:46:38 -0700 (PDT) From: Chen-Yu Yeh To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen Wang , Inochi Amaoto , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: Hiago De Franco , Longbin Li , "Anton D. Stavinskii" , Joshua Milas , devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, sophgo@lists.linux.dev, linux-kernel@vger.kernel.org, Chen-Yu Yeh Subject: [PATCH v2 0/2] riscv: dts: sophgo: Milk-V Duo 256M ethernet support Date: Sat, 3 Oct 2026 16:46:24 +0800 Message-ID: <20261003084627.353899-1-chenyou910331@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The Milk-V Duo 256M has no Ethernet connector of its own; the SG2002's internal PHY is only usable through the optional USB & Ethernet IO board. This series adds an overlay for that board and fixes the name of the internal PHY node it exposes. Changes in v2: - Enable Ethernet through an overlay instead of in the board devicetree, since without the IO board the pins may be used as GPIO (Inochi) - Send both patches in one thread (Inochi) - Test link-up and traffic on the IO board, which v1 could not - Collect Inochi's Reviewed-by on the PHY node name fix The overlay has the same shape as Hiago's for the Milk-V Duo [1], so the two boards stay consistent. The PHY node name fix is in cv180x.dtsi and so covers that board as well. Testing, with a kernel built from this branch: - sg2002-milkv-duo256m-eth.dtb: eth0 comes up at 100Mbps/Full, gets an address via DHCP and passes traffic - sg2002-milkv-duo256m.dtb: no eth0 is created, and the gmac node reads back as disabled Kernel log with sg2002-milkv-duo256m-eth.dtb: [ 1.426499] stmmaceth 4070000.ethernet: User ID: 0x10, Synopsys ID: 0x37 [ 1.426536] stmmaceth 4070000.ethernet: DWMAC1000 [ 6.052829] stmmaceth 4070000.ethernet eth0: PHY [mdio_mux-0.0:01] driver [Generic PHY] (irq=POLL) [ 8.138131] stmmaceth 4070000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx # ip addr show eth0 2: eth0: mtu 1500 qdisc mq state UP qlen 1000 inet 192.168.0.47/24 brd 192.168.0.255 scope global dynamic noprefixroute eth0 With the base sg2002-milkv-duo256m.dtb: # ip addr show eth0 ip: can't find device 'eth0' # cat /proc/device-tree/soc/ethernet@4070000/status disabled iperf3 against a desktop on the same switch gives 94 Mbit/s with the board sending and 70-74 Mbit/s with it receiving, with no retransmissions either way. The receive side being slower is not a CPU limit on the board; I have not looked into it further yet. v1: https://lore.kernel.org/sophgo/20260803163323.74414-1-chenyou910331@gmail.com/ https://lore.kernel.org/sophgo/20260803163427.74445-1-chenyou910331@gmail.com/ [1] https://lore.kernel.org/sophgo/20261001-milkv-duo-eth-overlay-v1-1-78bc1454f35b@baylibre.com/ Chen-Yu Yeh (2): riscv: dts: sophgo: add Milk-V Duo 256M ethernet support overlay riscv: dts: sophgo: cv180x: Fix internal ephy node name arch/riscv/boot/dts/sophgo/Makefile | 3 +++ arch/riscv/boot/dts/sophgo/cv180x.dtsi | 2 +- .../dts/sophgo/sg2002-milkv-duo256m-eth.dtso | 17 +++++++++++++++++ 3 files changed, 21 insertions(+), 1 deletion(-) create mode 100644 arch/riscv/boot/dts/sophgo/sg2002-milkv-duo256m-eth.dtso -- 2.43.0