From nobody Sun Feb 8 00:03:42 2026 Received: from mail-vk1-f178.google.com (mail-vk1-f178.google.com [209.85.221.178]) (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 1FB6936D4FD for ; Wed, 21 Jan 2026 09:02:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.178 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768986156; cv=none; b=bBD/mX/ygJ0aNf6cSTTMsNty98X1NcYt6mZGBRPs5M94aVv0kfsZBGnLP9Liyv2fmtwPz1zP5RTiL9ogEZmiWZCk8jqbnDH+nRsXj52ZCDc0SOR9FeFtvAmDu5QIwHNCefedPacHIgrSai2zX9GfBAQCJtwToevyxdsjTrHnpBY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768986156; c=relaxed/simple; bh=aI26termfloRMGA7Pr8/Ede7Zg+JV4cDdwVSFbO7ZC8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Gs2VdkEB8hRd2vTCK1g5/LTNPJhXja5oQog8WJX70BieF1yWpos0QSQ2qQc3BvfUgS3aRpP7yYMSdtqH33+G5lIvIfXB3PryUKZF/GBDVlwu/kYmNeoXgH3s/N4fvIo/2+abFBR8kXW02mgFlyUXdgs5l6Njggk1d1T/MpWD9sE= 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=h0zoCBq6; arc=none smtp.client-ip=209.85.221.178 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="h0zoCBq6" Received: by mail-vk1-f178.google.com with SMTP id 71dfb90a1353d-5634d866615so4360011e0c.2 for ; Wed, 21 Jan 2026 01:02:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1768986154; x=1769590954; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=nJLNhxpUuunLpKkwMWOBq42/DhYih3hY7Y23pMOtVm4=; b=h0zoCBq6jWz6ipZ/Fq8R0aG9RUQFBmZqrA28NQt/hANSGGmaCSsfDvq4IxfgA0+e5s YWhCam22hxRtlmenaDK8q4dUPohOJMuZxzTOgXiF5sI3f+jQniiMgraAXjcBJ83CIk0m qc5Z1H+QL3cp8jVPsMf1VWLxwCWPDSWZp93lsY4MzRDjOKA5MKEyNwj9WgWAhVoArsdF F70vsOYOCuMZO9AcBo0cBgmGYsLuTg/JZvrPAbLWGKiyiKT/nhMny6UNJBS+1YJ2mWSX KMnq1yV72rvCeIpz4GVIIVW5XZyIjlHnETgfFvnUhZXBTGtNyJrgHbpYisEBMACt6qWS U2TA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768986154; x=1769590954; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=nJLNhxpUuunLpKkwMWOBq42/DhYih3hY7Y23pMOtVm4=; b=QCxX/YsOLPaDaYoXMzSjf6LFJybC9mVTjqf4BwiM+mtZxK7fM5VsSnLMXaSYt9dH9s XgHcmJlEYl3t8YxL++wBpBfRDKcLvbdo2XQXRbtQF0pOjOSlI4A1VKGI9frLXtOLWuH3 S2jUGBT8X5/q/RC2JPvybbB9GCd22suqurCQYykYSPg8Vzb48ai236IIXQZLF4sx+4BK Nw6Ug4RyT4DqA1yw/izLbiV16h7koPhu239AV/+gctOmneiFYPzOga9heZmYKhLmOY50 I/MFWa5Sa3/6fcxIWUOISHLeXaDW1e7E96cFvFI3QKulLTfs11sKWEfCDyfyOU7bUY5B xMYQ== X-Forwarded-Encrypted: i=1; AJvYcCU3XTcwclkKkG/1Uk9F85/WjoZFt1VoIdPRwBxoyy/7oEuXbAGFzokFk0WGOgxHzVeW3/hpxiVJM35ondM=@vger.kernel.org X-Gm-Message-State: AOJu0YwvzM/GKwApBn7PkGBLK0do15qYBTVWPABwhtlNTg3+qERcunTH WxLbS51I0qk0FijhgOgFEB+A2bcdmccIXFpvpXtk0N8AdZCHpYsN4tXsyA130M99 X-Gm-Gg: AZuq6aJn8bz4DmDVK/TBLVEDi9vFjGgQiuXkWdvlYgOehLw74jMxhSD58+hXjvcRRyY WvBTNnKnaZcokpXQWnFq6J7ZwiSJKmv6uIzDY3LVxkY/X8QkFGNfcXFg29uHQ5K42RXgi1hLejd Sge0L0/CMT94zzh+Og17a/ptOQkjZuVGcNjsHAk8CArQJKHcP3RNvmFdB6yndg5NQBOmAJ3l7Zn wfj+VIn2uskcGHjdnvF475y0sGw9PXGpJw/HK7lhVYsekK5u8K2CcJHUHYOcmS5VG5G6pGAI8lq q7FfUyftXr5yzJ6O7/XYXzWc/uLTeAGrPuhTHNboz02NbWbl4Ivwg1bCESXfThHG/I2BVhlMxc2 1uitMIIM6FwgPQCT1gPw1HU7F8hnLr+9OL78nv9/K8Jc3v6VJ6zrrpWYB3FOyi9RGKYgie1CZio 6pqfnztddF4KyAumDvaEYN X-Received: by 2002:a05:7022:1e01:b0:11b:d6f2:a6d6 with SMTP id a92af1059eb24-1244b36efefmr13558965c88.34.1768979613029; Tue, 20 Jan 2026 23:13:33 -0800 (PST) Received: from localhost ([2001:19f0:ac00:4eb8:5400:5ff:fe30:7df3]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1244aefac48sm21239676c88.11.2026.01.20.23.13.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Jan 2026 23:13:32 -0800 (PST) From: Inochi Amaoto To: 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 , "Russell King (Oracle)" , Yao Zi , Yanteng Si , Vladimir Oltean , Inochi Amaoto , Lad Prabhakar , Chen-Yu Tsai , Choong Yong Liang , Shangjuan Wei , Jernej Skrabec , Boon Khai Ng , Maxime Chevallier , Quentin Schulz , Giuseppe Cavallaro , Jose Abreu Cc: 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: [PATCH net-next v2 1/3] dt-bindings: net: Add support for Spacemit K3 dwmac Date: Wed, 21 Jan 2026 15:13:09 +0800 Message-ID: <20260121071315.940130-2-inochiama@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260121071315.940130-1-inochiama@gmail.com> References: <20260121071315.940130-1-inochiama@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The GMAC IP on Spacemit K3 is almost a standard Synopsys DesignWare MAC (version 5.40a) with some extra clock. Add necessary compatible string for this device. Signed-off-by: Inochi Amaoto --- .../devicetree/bindings/net/snps,dwmac.yaml | 3 + .../bindings/net/spacemit,k3-dwmac.yaml | 103 ++++++++++++++++++ 2 files changed, 106 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/spacemit,k3-dwmac= .yaml diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Docume= ntation/devicetree/bindings/net/snps,dwmac.yaml index dd3c72e8363e..3c2c6cb6b10b 100644 --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml @@ -34,6 +34,7 @@ select: - snps,dwmac-5.10a - snps,dwmac-5.20 - snps,dwmac-5.30a + - snps,dwmac-5.40a - snps,dwxgmac - snps,dwxgmac-2.10 =20 @@ -108,6 +109,7 @@ properties: - snps,dwmac-5.10a - snps,dwmac-5.20 - snps,dwmac-5.30a + - snps,dwmac-5.40a - snps,dwxgmac - snps,dwxgmac-2.10 - sophgo,sg2042-dwmac @@ -653,6 +655,7 @@ allOf: - snps,dwmac-5.10a - snps,dwmac-5.20 - snps,dwmac-5.30a + - snps,dwmac-5.40a - snps,dwxgmac - snps,dwxgmac-2.10 - st,spear600-gmac diff --git a/Documentation/devicetree/bindings/net/spacemit,k3-dwmac.yaml b= /Documentation/devicetree/bindings/net/spacemit,k3-dwmac.yaml new file mode 100644 index 000000000000..e69f3b60c51f --- /dev/null +++ b/Documentation/devicetree/bindings/net/spacemit,k3-dwmac.yaml @@ -0,0 +1,103 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/spacemit,k3-dwmac.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Spacemit K3 DWMAC glue layer + +maintainers: + - Inochi Amaoto + +select: + properties: + compatible: + contains: + const: spacemit,k3-dwmac + required: + - compatible + +properties: + compatible: + items: + - const: spacemit,k3-dwmac + - const: snps,dwmac-5.40a + + reg: + maxItems: 1 + + clocks: + items: + - description: GMAC main clock + - description: PTP clock + - description: TX clock + + clock-names: + items: + - const: stmmaceth + - const: ptp_ref + - const: tx + + interrupts: + minItems: 1 + items: + - description: MAC interrupt + - description: MAC wake interrupt + + interrupt-names: + minItems: 1 + items: + - const: macirq + - const: eth_wake_irq + + resets: + maxItems: 1 + + reset-names: + const: stmmaceth + + spacemit,apmu: + $ref: /schemas/types.yaml#/definitions/phandle-array + items: + - items: + - description: phandle to the syscon node which control the glue= register + - description: offset of the control register + - description: offset of the dline register + + description: + A phandle to syscon with offset to control registers for this MAC + +required: + - compatible + - reg + - clocks + - clock-names + - interrupts + - interrupt-names + - resets + - reset-names + +allOf: + - $ref: snps,dwmac.yaml# + +unevaluatedProperties: false + +examples: + - | + #include + + eth0: ethernet@cac80000 { + compatible =3D "spacemit,k3-dwmac", "snps,dwmac-5.40a"; + reg =3D <0xcac80000 0x2000>; + clocks =3D <&syscon_apmu 66>, <&syscon_apmu 68>, + <&syscon_apmu 69>; + clock-names =3D "stmmaceth", "ptp_ref", "tx"; + interrupts =3D <131 IRQ_TYPE_LEVEL_HIGH>, <276 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names =3D "macirq", "eth_wake_irq"; + phy-mode =3D "rgmii-id"; + phy-handle =3D <&phy0>; + resets =3D <&syscon_apmu 67>; + reset-names =3D "stmmaceth"; + spacemit,apmu =3D <&syscon_apmu 0x384 0x38c>; + }; + --=20 2.52.0 From nobody Sun Feb 8 00:03:42 2026 Received: from mail-dl1-f52.google.com (mail-dl1-f52.google.com [74.125.82.52]) (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 B4F2844D69F for ; Wed, 21 Jan 2026 07:13:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.52 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768979625; cv=none; b=cBnwhN+mj69xexHe6j8BNogHMgYK4A3zrVeYKv45/sstYLgdWsHz5iwf2ibK+ucDnzyYpKqV79XEYRECp9zT2maecy7LapiJ01Qom1OcAbZAUg6kgqcNoZpg+R9gE2JErvh5NhVsVwXkXqJ/YP2zlWOSnAGM/dkCM43hsHaPWDQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768979625; c=relaxed/simple; bh=RbmYS+GbmO5r9aIsVbkZb99LO5fpXfIwGvbgj9g6qUI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OJfFvLuLXq60FY13qniFWst1pw5Ap3NawTWpPAkCdaVEyHIYKix2lm8zwpEvAUbhNXMZABsGvyN4TCMfFYDbbIAJw6UQ03SmD1F8xT60jTa10r6GxrVwxDIivxVZ3bz0BixrKY9xUnU/4edylpr5mHICL75EZSWi/lEOwMURLYQ= 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=GMQjbMTC; arc=none smtp.client-ip=74.125.82.52 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="GMQjbMTC" Received: by mail-dl1-f52.google.com with SMTP id a92af1059eb24-1233702afd3so8007365c88.0 for ; Tue, 20 Jan 2026 23:13:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1768979617; x=1769584417; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=yB8/RdUGEfLZjhmXdp52kQTD2QqD1w42DdvzuHTbkg0=; b=GMQjbMTC6Yu6Xbj0QKmxiR3upjKTEOjq6HD4d/L27l2AK2TgOEaKhxlc0XUjNR7CwP 1+AZacUtJnYkbQsanBZwfvlrb2KZmGyF2vh5cd1puOKUik+Y1Ie7cjzE0oLMBUAKz6lG /aQmMESUBDjvpkDduzDtJmX4xsaOb7JVgNfovgqcO8iLG1aD9gyX14aRYfSqR9QqXTg7 i2H1grIY6pAJRKXrSPGfoIQlrgtsOG0xN7OO6EaZblj/rlxSbm0MFVKVXBVftY9T7Jkr 8wDUTXTlaJM8HqlWKK9GR2NEpv2mdSz+P/rvc0iJo8cVIakAdMPCP0maMl4Kj2cWWwmE zeMQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768979617; x=1769584417; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=yB8/RdUGEfLZjhmXdp52kQTD2QqD1w42DdvzuHTbkg0=; b=NdClJ8Xq6X6mGk5k+AVmzNdVclTjRlZj/Koco2qBQw8Pp34FyFtVMnCtKFOrdWWzJp CCXBs6VUW76Gd7o/wWBJBItdbafGuWF9ooKe+Hf6PdP2P2r17bNrp2hwnlLmLGpNLvc/ fEHa00/NM9EA6Yf62Z1M8OMba3GwYKSKJPHaKnTbcFBkIfjSO4q+8SD4Iu4HmUsLZxnN pXo8hNrqf0h68FhPjwd19Vsbk7Dc9+Bnc7v7UhffdeX6JtsMayOru97EMMSiTn+bAiP0 cvyvnVG9PU8Hdofvu3PnElr61yzKWTnYJC6yFl8C9u2Ll/Oima+shqJRw9kGECdHaWvd UROA== X-Forwarded-Encrypted: i=1; AJvYcCV0jiioXGjJKbxgqGrEdO511S6ptqK22Fsh5n1Z14FNUPYjGrMPnrbI/1p8vTFxzjbjCpai3/kWuIZ1NiQ=@vger.kernel.org X-Gm-Message-State: AOJu0YwNK2lfZzE+X1/Ppt4RuTrkx5gD2WXKemNmM7eNiVhY312v7P/V 42mLQrVSiRuF/UkDHnuQ5oWcKWrO9PyDej9Ebe0SaP6M9Ty7Mj4rbUt4 X-Gm-Gg: AZuq6aJc76L2qokLqUgipNfe39NqgLcXuFINelqs3WEgImKo+gnVgYEfT03XSe6fMCE 4sP7pEIFscOmK8egHBFWc22P34v94qJE3ur2BdjoamS/9bzWlGHR7NFyVfip+BHMvZJ/2qFHfLu 6KCWniqMOrm2DjdKeWEH7BoGOaWXAa92GPXZGrNb8yG2tmGrf3P9niFE5O2mlMILkahGIiaAvEl Vp9TjNzAiK+xSnqqVRq58e3griFiHDmeH0SvHedfvEnzU84mXK225HhMznmVWMkuqUD52ySr1/a TaAnazRfEiBrWDQ9/hPzyafiKTxg804/b1wEwzQ2AMG3J0CgayYy2qEgdXl9iF+ygbjmnPFyeNL tEbD4wzS703iC/ii17aKQihLFwqAAyRdUdsp/Id4huK4yZ+5Nzjdq1dtpI5+qKpe2okKy1fsSQj 8y+b8zSTxK0A== X-Received: by 2002:a05:7022:914:b0:11b:a514:b64f with SMTP id a92af1059eb24-1246a966afdmr2812178c88.13.1768979616484; Tue, 20 Jan 2026 23:13:36 -0800 (PST) Received: from localhost ([2001:19f0:ac00:4eb8:5400:5ff:fe30:7df3]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2b6b367cbc9sm22387219eec.32.2026.01.20.23.13.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Jan 2026 23:13:36 -0800 (PST) From: Inochi Amaoto To: 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 , "Russell King (Oracle)" , Yao Zi , Yanteng Si , Vladimir Oltean , Inochi Amaoto , Lad Prabhakar , Chen-Yu Tsai , Choong Yong Liang , Shangjuan Wei , Jernej Skrabec , Boon Khai Ng , Maxime Chevallier , Quentin Schulz , Giuseppe Cavallaro , Jose Abreu Cc: 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: [PATCH net-next v2 2/3] net: stmmac: platform: Add snps,dwmac-5.40a IP compatible string Date: Wed, 21 Jan 2026 15:13:10 +0800 Message-ID: <20260121071315.940130-3-inochiama@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260121071315.940130-1-inochiama@gmail.com> References: <20260121071315.940130-1-inochiama@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add compatible string for 5.40a version that can avoid to define some platform data in the glue layer. Signed-off-by: Inochi Amaoto --- drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/driver= s/net/ethernet/stmicro/stmmac/stmmac_platform.c index 8979a50b5507..54c7b1537ab9 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -396,6 +396,7 @@ static const char * const stmmac_gmac4_compats[] =3D { "snps,dwmac-5.10a", "snps,dwmac-5.20", "snps,dwmac-5.30a", + "snps,dwmac-5.40a", NULL }; =20 --=20 2.52.0 From nobody Sun Feb 8 00:03:42 2026 Received: from mail-dl1-f51.google.com (mail-dl1-f51.google.com [74.125.82.51]) (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 84A1444CF44 for ; Wed, 21 Jan 2026 07:13:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768979629; cv=none; b=KwrXbhxndL2NScurvdYZic+4Ed4ZIeT+bscp8kgS12HTpxzNxrrr7XlB6DBqlJORJhJcoloTBGQvLYaOfrKsz7jQ6lN/IrJtItYkSIBv40sbsxznqd4uT3cwzQeHWdoET6gZKZbvC41QfhG69oBnMX8UtxGTlUsZEcxsviRQMHs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768979629; c=relaxed/simple; bh=22KVXf7BsLEd9shoPoNSDYsXDbTxIem3O0CTDWMSsqM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=cVHBlEpBkv5JM4NKOzkP8SqBg72UYdW7EtR3h/09g6A+M/BZQ0iF9wTUeTMi0oV2Nin9ozTagCm3JtG3/KJvCLgYDy1g2StzqNu/rh8+PAKtEFPYzAUdV73b6ZiF4szWVl7/YKTItugvm7K/71ET27lS0Jfk1UzAnqNSMQONR20= 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=jX2PIPL3; arc=none smtp.client-ip=74.125.82.51 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="jX2PIPL3" Received: by mail-dl1-f51.google.com with SMTP id a92af1059eb24-12331482b8fso47699c88.1 for ; Tue, 20 Jan 2026 23:13:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1768979620; x=1769584420; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=q5QOmoL1No8TYm8M5X91IziuCiWq9EqJU0I5uGvwg5k=; b=jX2PIPL3ax1v9A+WrUmC4CdT4rpelCWV0R9ZPotBly4ccgt93cNVXN2u34guT/fNkF N2EIPzys58e7ZvkYQkMsQWYMCQgg72kbccESGUn0cCrIL8pnoNl1D3qp7jLJGzvkOG8u dgPO/DQLXxJB3cNlNocf/dNW6GQa9xDv5C/XTITgrIWM6KWPm5zMo6dIEQspcFvGPVqR vR6tZ2yBwYugKWGrFpf3UCGKoWE0LdzWzYQnG4Ud5O0Ujb0hX1T1JkRjGLGnNplZp1ip ViVxKnHjufoC1+BVDBrZyu61CLD0OxfvrnyZ6GutLz3K6izDNc+Yo0VJXWYgIwnEbV9Y qFjg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768979620; x=1769584420; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=q5QOmoL1No8TYm8M5X91IziuCiWq9EqJU0I5uGvwg5k=; b=ik8gJGDPR6KTi1jW6NAq3erEDohMj994jSENLm2/3poybpTB0yhR8QavNFJ7UZiDdr Nrjly4kDD/R2hNrHd/dnqo9wt6k6ElUAsRJigOWwvXhLqTAtYqEurURHexC0IqHErQ+y DLh5Vk5Y4mEpR/OldY0QLnt9taTICbQO9dNgeLAYzgCwSkMs5tpE79YGNBmtXeLfoF5s N0lr7NT8KuAlKSPDU7+oBUy/O9AnBGM6FVyXsiUXsTFkccOomB4adZgOq/iEzj++QgpV IDhaYCVKexOpXkc0gytesPssY89Fsfn3TAsMGZZPnUU3cIpQcKyM1tAVy57g7jMvXfN6 i8fw== X-Forwarded-Encrypted: i=1; AJvYcCV1IMomMz4Y/XId0rxFlwpDjfpZmj/aKo/6y/AqQj+mevNkGQL2z7hfrsizzHOsrrHm/tZr7gGAhdmJ478=@vger.kernel.org X-Gm-Message-State: AOJu0YzGp1kfm9YvIH/WQtZmrg9Lg+r9mvDiPxBDfoX50VnmOULJfGSt GjRtQU0jsLWE8QtkxiPnSFgwkMmBQ8j19wy3Bn5Wqxuh1nfONxRdUaue X-Gm-Gg: AZuq6aL535LD0qibbX/qYb0O/G+P6Dh75NG84YY0LBSRJe6b2cyJ9eVCmPYNSOpJ2tR ysAXB/YyQqccOo4OI97ESTxo/Kl5aq3yrXrJiy9XHZujl1QGT6BLBrTroUdpRg2WC1MAmLcDmDP LC3355XZj1ML6f7E40GFH8YVVgghDv0jKaRWA3KNTM3f9brRwB821msJz/YPkKLOaP/xK84OKXS wSR0l7SQJyKFg2lwz75uJjzL2Dn8gbgtb+/tzzhpqBgBvgCQuyNehFcOPMcbk4/xKNlyEYh022N BdV0g7o9o9M78KxFnEEv4+tqKxqnEenn5FwntVbikPy+xPctDilZ13WLJ9ZA9qUrGgmE5M42rpK G9qEGQOMtB7x+0Uz93qRibQjfyK9aM9OCPj+EYIc6+e4JeLj4LWzJ2Re/aRvRZVqnf4AT/Swk+I 6MlHRodeey7g== X-Received: by 2002:a05:7022:6b86:b0:11a:fe6f:806a with SMTP id a92af1059eb24-1244a769e0emr11872529c88.31.1768979620027; Tue, 20 Jan 2026 23:13:40 -0800 (PST) Received: from localhost ([2001:19f0:ac00:4eb8:5400:5ff:fe30:7df3]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1244aefa7c5sm25240654c88.10.2026.01.20.23.13.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Jan 2026 23:13:39 -0800 (PST) From: Inochi Amaoto To: 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 , "Russell King (Oracle)" , Yao Zi , Yanteng Si , Vladimir Oltean , Inochi Amaoto , Lad Prabhakar , Chen-Yu Tsai , Choong Yong Liang , Shangjuan Wei , Jernej Skrabec , Boon Khai Ng , Maxime Chevallier , Quentin Schulz , Giuseppe Cavallaro , Jose Abreu Cc: 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: [PATCH net-next v2 3/3] net: stmmac: Add glue layer for Spacemit K3 SoC Date: Wed, 21 Jan 2026 15:13:11 +0800 Message-ID: <20260121071315.940130-4-inochiama@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260121071315.940130-1-inochiama@gmail.com> References: <20260121071315.940130-1-inochiama@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The etherenet controller on Spacemit K3 SoC is Synopsys DesignWare MAC (version 5.40a), with the following special point: 1. The rate of the tx clock line is auto changed when the mac speed rate is changed, and no need for changing the input tx clock. 2. This controller require a extra syscon device to configure the interface type, enable wake up interrupt and delay configuration if needed. Add Spacemit dwmac driver support on the Spacemit K3 SoC. Signed-off-by: Inochi Amaoto --- drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 + drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + .../ethernet/stmicro/stmmac/dwmac-spacemit.c | 221 ++++++++++++++++++ 3 files changed, 234 insertions(+) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-spacemit.c diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethe= rnet/stmicro/stmmac/Kconfig index 907fe2e927f0..583a4692f5da 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig @@ -216,6 +216,18 @@ config DWMAC_SOPHGO for the stmmac device driver. This driver is used for the ethernet controllers on various Sophgo SoCs. =20 +config DWMAC_SPACEMIT + tristate "Spacemit dwmac support" + depends on OF && (ARCH_SPACEMIT || COMPILE_TEST) + select MFD_SYSCON + default m if ARCH_SPACEMIT + help + Support for ethernet controllers on Spacemit RISC-V SoCs + + This selects the Spacemit platform specific glue layer support + for the stmmac device driver. This driver is used for the + Spacemit K3 ethernet controllers. + config DWMAC_STARFIVE tristate "StarFive dwmac support" depends on OF && (ARCH_STARFIVE || COMPILE_TEST) diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/eth= ernet/stmicro/stmmac/Makefile index 7bf528731034..9e32045631d8 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Makefile +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile @@ -27,6 +27,7 @@ obj-$(CONFIG_DWMAC_RZN1) +=3D dwmac-rzn1.o obj-$(CONFIG_DWMAC_S32) +=3D dwmac-s32.o obj-$(CONFIG_DWMAC_SOCFPGA) +=3D dwmac-altr-socfpga.o obj-$(CONFIG_DWMAC_SOPHGO) +=3D dwmac-sophgo.o +obj-$(CONFIG_DWMAC_SPACEMIT) +=3D dwmac-spacemit.o obj-$(CONFIG_DWMAC_STARFIVE) +=3D dwmac-starfive.o obj-$(CONFIG_DWMAC_STI) +=3D dwmac-sti.o obj-$(CONFIG_DWMAC_STM32) +=3D dwmac-stm32.o diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-spacemit.c b/drivers= /net/ethernet/stmicro/stmmac/dwmac-spacemit.c new file mode 100644 index 000000000000..ca600c068aaa --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-spacemit.c @@ -0,0 +1,221 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Spacemit DWMAC platform driver + * + * Copyright (C) 2026 Inochi Amaoto + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "stmmac_platform.h" + +/* ctrl register bits */ +#define PHY_INTF_RGMII BIT(3) +#define PHY_INTF_MII BIT(4) + +#define WAKE_IRQ_EN BIT(9) +#define PHY_IRQ_EN BIT(12) + +/* dline register bits */ +#define RGMII_RX_DLINE_EN BIT(0) +#define RGMII_RX_DLINE_STEP GENMASK(5, 4) +#define RGMII_RX_DLINE_CODE GENMASK(15, 8) +#define RGMII_TX_DLINE_EN BIT(16) +#define RGMII_TX_DLINE_STEP GENMASK(21, 20) +#define RGMII_TX_DLINE_CODE GENMASK(31, 24) + +#define MAX_DLINE_DELAY_CODE 0xff +#define MAX_WORKED_DELAY 2800 + +/* Note: the delay step value is at 0.1ps */ +static const unsigned int k3_delay_step_10x[4] =3D { + 367, 493, 559, 685 +}; + +static int spacemit_dwmac_set_delay(struct regmap *apmu, + unsigned int dline_offset, + unsigned int tx_code, unsigned int tx_config, + unsigned int rx_code, unsigned int rx_config) +{ + unsigned int mask, val; + + mask =3D 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 =3D FIELD_PREP(RGMII_TX_DLINE_STEP, tx_config) | + FIELD_PREP(RGMII_TX_DLINE_CODE, tx_code) | RGMII_TX_DLINE_EN | + FIELD_PREP(RGMII_RX_DLINE_STEP, rx_config) | + FIELD_PREP(RGMII_RX_DLINE_CODE, rx_code) | RGMII_RX_DLINE_EN; + + return regmap_update_bits(apmu, dline_offset, mask, val); +} + +static int spacemit_dwmac_detected_delay_value(unsigned int delay, + unsigned int *config) +{ + unsigned int best_delay =3D 0; + unsigned int best_config =3D 0; + int best_code =3D 0; + int i; + + if (delay =3D=3D 0) + return 0; + + if (delay > MAX_WORKED_DELAY) + return -EINVAL; + + for (i =3D 0; i < ARRAY_SIZE(k3_delay_step_10x); i++) { + unsigned int step =3D k3_delay_step_10x[i]; + int code =3D DIV_ROUND_CLOSEST(delay * 10 * 10, step * 9); + unsigned int tmp =3D code * step * 9 / 10 / 10; + + if (abs(tmp - delay) < abs(best_delay - delay)) { + best_code =3D code; + best_delay =3D tmp; + best_config =3D i; + } + } + + *config =3D best_config; + + return best_code; +} + +static int spacemit_dwmac_fix_delay(struct plat_stmmacenet_data *plat_dat, + struct regmap *apmu, + unsigned int dline_offset, + unsigned int tx_delay, unsigned int rx_delay) +{ + bool mac_rxid =3D rx_delay !=3D 0; + bool mac_txid =3D tx_delay !=3D 0; + unsigned int rx_config =3D 0; + unsigned int tx_config =3D 0; + int rx_code; + int tx_code; + + plat_dat->phy_interface =3D phy_fix_phy_mode_for_mac_delays(plat_dat->phy= _interface, + mac_txid, + mac_rxid); + + if (plat_dat->phy_interface =3D=3D PHY_INTERFACE_MODE_NA) + return -EINVAL; + + rx_code =3D spacemit_dwmac_detected_delay_value(rx_delay, &rx_config); + if (rx_code < 0) + return rx_code; + + tx_code =3D spacemit_dwmac_detected_delay_value(tx_delay, &tx_config); + if (tx_code < 0) + return tx_code; + + return spacemit_dwmac_set_delay(apmu, dline_offset, + tx_code, tx_config, + rx_code, rx_config); +} + +static int spacemit_dwmac_update_ifconfig(struct plat_stmmacenet_data *pla= t_dat, + struct stmmac_resources *stmmac_res, + struct regmap *apmu, + unsigned int ctrl_offset) +{ + unsigned int mask =3D PHY_INTF_MII | PHY_INTF_RGMII | WAKE_IRQ_EN; + unsigned int val =3D 0; + + switch (plat_dat->phy_interface) { + case PHY_INTERFACE_MODE_MII: + val =3D PHY_INTF_MII; + break; + + case PHY_INTERFACE_MODE_RMII: + break; + + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_TXID: + val =3D PHY_INTF_RGMII; + break; + + default: + return -EOPNOTSUPP; + } + + if (stmmac_res->wol_irq >=3D 0) + val |=3D WAKE_IRQ_EN; + + return regmap_update_bits(apmu, ctrl_offset, mask, val); +} + +static int spacemit_dwmac_probe(struct platform_device *pdev) +{ + struct plat_stmmacenet_data *plat_dat; + struct stmmac_resources stmmac_res; + struct device *dev =3D &pdev->dev; + unsigned int offset[2]; + struct regmap *apmu; + u32 rx_delay =3D 0; + u32 tx_delay =3D 0; + int ret; + + ret =3D stmmac_get_platform_resources(pdev, &stmmac_res); + if (ret) + return dev_err_probe(dev, ret, + "failed to get platform resources\n"); + + plat_dat =3D devm_stmmac_probe_config_dt(pdev, stmmac_res.mac); + if (IS_ERR(plat_dat)) + return dev_err_probe(dev, PTR_ERR(plat_dat), + "failed to parse DT parameters\n"); + + plat_dat->clk_tx_i =3D 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"); + + apmu =3D syscon_regmap_lookup_by_phandle_args(pdev->dev.of_node, "spacemi= t,apmu", 2, offset); + if (IS_ERR(apmu)) + return dev_err_probe(dev, PTR_ERR(apmu), + "Failed to get apmu regmap\n"); + + ret =3D spacemit_dwmac_update_ifconfig(plat_dat, &stmmac_res, + apmu, offset[0]); + if (ret) + return dev_err_probe(dev, ret, "Failed to configure ifconfig\n"); + + of_property_read_u32(pdev->dev.of_node, "tx-internal-delay-ps", &tx_delay= ); + of_property_read_u32(pdev->dev.of_node, "rx-internal-delay-ps", &rx_delay= ); + + ret =3D spacemit_dwmac_fix_delay(plat_dat, apmu, offset[1], tx_delay, rx_= delay); + if (ret) + return dev_err_probe(dev, ret, "Failed to configure delay\n"); + + return stmmac_dvr_probe(dev, plat_dat, &stmmac_res); +} + +static const struct of_device_id spacemit_dwmac_match[] =3D { + { .compatible =3D "spacemit,k3-dwmac" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, spacemit_dwmac_match); + +static struct platform_driver spacemit_dwmac_driver =3D { + .probe =3D spacemit_dwmac_probe, + .remove =3D stmmac_pltfr_remove, + .driver =3D { + .name =3D "spacemit-dwmac", + .pm =3D &stmmac_pltfr_pm_ops, + .of_match_table =3D spacemit_dwmac_match, + }, +}; +module_platform_driver(spacemit_dwmac_driver); + +MODULE_AUTHOR("Inochi Amaoto "); +MODULE_DESCRIPTION("Spacemit DWMAC platform driver"); +MODULE_LICENSE("GPL"); --=20 2.52.0