From nobody Sat Feb 7 08:07:44 2026 Received: from mail-dy1-f173.google.com (mail-dy1-f173.google.com [74.125.82.173]) (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 475397A13A for ; Wed, 28 Jan 2026 09:06:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.173 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769591198; cv=none; b=LwifUAHZ+iaqzgyqGzmMRb042RLjAzkXJ1lJrpYOyuhnA85VPIZvDFmY/PMXpTfXX5m4uQJz25TKgl9FUY1BrN6BrSVtM02cI8ukvLDJTCL60R8uiSuHd7eL4W00GfNHnSCWsdr9seiFfuiTY+VPWsQm/f4oi6nlJ/7RWOa9uQ4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769591198; c=relaxed/simple; bh=5xIKoh/TwhS0XTiSYjF8TimZ4Mgh0qKu32LLs95xkk8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ev5cOWbJrZT7WlR9zOu3V4YT57j4pW/womHFACUZnLyQpMgaxjYRj0ff0kab1+/DQK4dqC0XQcRmd5zcrwbYqL2EieNBui56fMiLUGeIh0HKdxZ444VgQJZNQ5hkhspDJpF0AZdhv3EbXhh7T/2/03ZaN4RSyuPsZNFsF3vl/YU= 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=GPCd8lOl; arc=none smtp.client-ip=74.125.82.173 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="GPCd8lOl" Received: by mail-dy1-f173.google.com with SMTP id 5a478bee46e88-2b785801c93so5814518eec.0 for ; Wed, 28 Jan 2026 01:06:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1769591196; x=1770195996; 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=yEOFkSi2N0vtkbtCff5kn8mqsv72spWR8lTmAsEOTX4=; b=GPCd8lOlZI3tslwZEBproE2n06PNrjaSQt0MrKxt8kO0s2R6ETn6cYaRm5C+8gcuvf CgQX9wFvs8EnMYhuyT0UAPKoePTWvnH3cDHiccKd4T22NIZuSnE7wJqNKFu1Qbgz5fcv qldmj9fshNHUQrBS8x13ByQNVmVRnaaFmDmIEWfPUo3SUq8FtvCQdRB/066AapwTnWC0 mnZWI4VCkzLjbZgN0tHtb8MhTRDwxeFxSS5wT+OTK/Xv6yGHTgFoFy8I3CX4FQZz940I ssdJZTv7GBVzXyV14/ZrkjooGWzCiX8zLdu1PWOlsMOMclW4YomcdRU1sA2AHLWxHy4w driw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769591196; x=1770195996; 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=yEOFkSi2N0vtkbtCff5kn8mqsv72spWR8lTmAsEOTX4=; b=cWLZnKv4fyj2hL/d5WRyrVBCduzXz1u/4iAdvooyfZJZJUDht9YgPuj2UGhk4HBwYu C+mtPZqthzwCZY+MA7wj9TSDqUjNDoi4+2+3/3N+gGscACUjt43W4dCSx+COTtW10gGV NdyzZpIsW/uPDk2EG1M+S5EetkED2877OeRwZ7w0OcsV+W8X/M1B5EY6M/mDrmVDyfPz 8MPsrjyFOgh+M4v/O2GPngZWEb0tuid5e4ywQSXrwzdv9/xdgdhkLSeXcVF+EpxS1Nmw pgB8k4bTN0DJpKg/WoydLyudwKWp1d3IsCSzInQk7O6E6KmtZQqq3JDpkFCudZGg0zPq 2hEg== X-Forwarded-Encrypted: i=1; AJvYcCVmYOPmZT9wWKFe7SyoA5prp4LHLd1/L+PPsfJlLElZXSxg5Q8w6HMhIQf9VDV0Ppj/Se2FA1EBd3bEkCs=@vger.kernel.org X-Gm-Message-State: AOJu0YyXzY8oYqMGcvlbuMUo4VK7G567N5wuvkTDtA5UbXsb8eGGH2nb /PdLbP3vUX67JHQa6J+HzFfXlXt3ZMao2ops04NLItMrPNKjNkCPHNlDFWYQCFmK X-Gm-Gg: AZuq6aKyr6HHYFSDgdA5geOyM7J2wvzn1BTvvNv5WsUpjlxqcwPsIMaV69sSNEugqnt oCi0GIdosbUGMdPRYW2K7uWsG35D/UZQHCWLDHhPj57R4LbX4pFEV/kYsi0GyJd22Hq4kRzxvFD qNIrAAVrIi32SWDI4VhSsDBR4f+9iEmhCUKpgATGFGJ9zzEAfv5c9opD9V+qw6/D3hbwFOTcLRE 4e4KK9BKtgWBOJX4OqYIWHULedSIfu60hNTrjhbrq2aEgfk2HDesq6fDD8TTfQYQ7Ub8Tip+vSN Nn7WVrsF71luAIJzYp4RMJTN9TdgKEsoRj4nHXQgCvA/bvzhEktJ8hfh9qSM46TyVJ/t33tCX4e W60XPetmWHrTqOf0z6eq1Q/6VznyDuWnQqvURz1RgqEoxMKL4NsO2MC5GdSEIzrBuM3myR47QkV jwvIRCbEVtCw== X-Received: by 2002:a05:7300:a188:b0:2a4:3594:d540 with SMTP id 5a478bee46e88-2b78d90178cmr2919827eec.13.1769585396662; Tue, 27 Jan 2026 23:29:56 -0800 (PST) Received: from localhost ([2001:19f0:ac00:4eb8:5400:5ff:fe30:7df3]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2b7a16ef40asm1515483eec.13.2026.01.27.23.29.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Jan 2026 23:29:56 -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 , Lad Prabhakar , Inochi Amaoto , Maxime Chevallier , Choong Yong Liang , Chen-Yu Tsai , Shangjuan Wei , Boon Khai Ng , 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 v3 1/3] dt-bindings: net: Add support for Spacemit K3 dwmac Date: Wed, 28 Jan 2026 15:29:27 +0800 Message-ID: <20260128072931.875041-2-inochiama@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260128072931.875041-1-inochiama@gmail.com> References: <20260128072931.875041-1-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 | 2 + .../bindings/net/spacemit,k3-dwmac.yaml | 103 ++++++++++++++++++ 2 files changed, 105 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..a3fcb9a251fa 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 @@ -653,6 +654,7 @@ 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..fc024a927fcc --- /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 + - spacemit,apmu + +allOf: + - $ref: snps,dwmac.yaml# + +unevaluatedProperties: false + +examples: + - | + #include + + ethernet@cac80000 { + compatible =3D "spacemit,k3-dwmac", "snps,dwmac-5.40a"; 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Tue, 27 Jan 2026 23:29:59 -0800 (PST) Received: from localhost ([2001:19f0:ac00:4eb8:5400:5ff:fe30:7df3]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2b7a1add66fsm1479966eec.28.2026.01.27.23.29.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Jan 2026 23:29:59 -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 , Lad Prabhakar , Inochi Amaoto , Maxime Chevallier , Choong Yong Liang , Chen-Yu Tsai , Shangjuan Wei , Boon Khai Ng , 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 v3 2/3] net: stmmac: platform: Add snps,dwmac-5.40a IP compatible string Date: Wed, 28 Jan 2026 15:29:28 +0800 Message-ID: <20260128072931.875041-3-inochiama@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260128072931.875041-1-inochiama@gmail.com> References: <20260128072931.875041-1-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 Sat Feb 7 08:07:44 2026 Received: from mail-dl1-f44.google.com (mail-dl1-f44.google.com [74.125.82.44]) (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 AC64A28D82F for ; Wed, 28 Jan 2026 07:30:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.44 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769585406; cv=none; b=jCFgRExYK1z/37D2hQYmbpZDAR2yThYElP9RYJylOGO1sBjT7XDzJPwF1Pdx644AXbw9RB9Lc7rNVRgFQXTI0Aax+0dr/9mobrdBRl5au157bhml6UTFRGFk+jR28/tBFVQDV9MCp1/AfE8o/8bTgekbYQpdO9vP5sXFBlyBTq8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769585406; c=relaxed/simple; bh=LGgLo0sQ1anLSBo9ms/BbXzFi/dI/E3272sNm0bwKzY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lmzCHsW3wLlsFPmN3HId9XlcWoXmY9IVFNdWMHZUIQbpCqnFKjRfHP9/eNHP1Li5+qUhQkeBX2HCQQtIf/7e+BUmnymsGFVm9Bbf10d09v0LJNbli/03LoedPktX6JY69F+dSH31H4ZNC0J9DHx1NpPQw/kXvnV7a+Bk+JIMV7U= 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=H9iDSduC; arc=none smtp.client-ip=74.125.82.44 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="H9iDSduC" Received: by mail-dl1-f44.google.com with SMTP id a92af1059eb24-124a1b4dd40so180514c88.0 for ; Tue, 27 Jan 2026 23:30:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1769585403; x=1770190203; 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=fUAlcjlhE29H5H5PUKfg3wkA3zq9RKgoay7Cyo7WuV8=; b=H9iDSduCOXb1SbaMH9Y73XlKqdVzlChlth8ciOkji/2zrGgfAUDHUm/dLfE/EhXJUD fBoKdLujNPGx+x1QqBup0QGKGXPdtTI2XoOj7C3DgYHfQ8YXFHKncUhU75W54Kc2Qc8X k6HpqWBxCOo2WmJ2lCgQEBnvuQMk30g7mx+DdPMiOvlceUXwPqNBLNEDB2Uru+dFWhNk xbUd/f2jQ4qEFcqDhchKk3h92l4f2bsc6zSSb1Gu7Wh1MIKvIK3li2zmvS4yO5xMpYAX ywR0u+yFNWJ5d97fSuT/E6kfZKAlUJED6uSPMcuXqhJ68dIGn+7VDPw3f8TCc1JgaXk/ ZfGg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769585403; x=1770190203; 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=fUAlcjlhE29H5H5PUKfg3wkA3zq9RKgoay7Cyo7WuV8=; b=Zw6c+U8szfKWSxjNxl8HLM2rSVlVbZcEM80XsUYXSliRHUmuufq0oJRWFBOic+ZSfG LiCLD871I5ngPjOVKt6v+q0MKhUPTS6SvYpafejgZ1kIkB51gpCC6CbAX0sLEJKqHINt MCSKkJXdmIbi2c0PzlXq11Tx+2tWr+9kZFnmc/4//xddz7uOg4OlaXF3wXEoowkwHccx KvVfvrVBwUxqIXBJR03YA967ivHossjDno6wAQO7mX6pACfi6o0mqKG8679VY1kJNn+L Mm/iJk2M5xkx/74fjY0tYZ0PGRYFvqbpz/3+E8Y3w82EUe/0R839X/hURYHbW8iN0HWe EDWQ== X-Forwarded-Encrypted: i=1; AJvYcCVwcwZ011s/lZlhiT9eOrHULA48m2dVF0WhK8uZNbw1rCwpAjzZk7whA3JQK62BzjeV1ejiyMX15vQ51BI=@vger.kernel.org X-Gm-Message-State: AOJu0Yy1DoyyNzRLhCTuBQDloj/ov0iVPOA6lYI8TZW/cAnZ/AfxxLvK Wp2ORReNBv+WyK1KJagi1kMgb4HwQWr8Uc/txJ9drR6/pdgxhRap9635 X-Gm-Gg: AZuq6aIwOsQd5fZhze6k0DI2bi7t87KQIeNtFTHd0l/tcui83fvzl0h0OWKJsWZ6Trp W8S1KmqGSOgXQP8aEBmpKvHK2ucYtO7ihPfXPYqf2N1b3qJx/O56RKLGdfudrPoHzgaM2ZVZ6IU lVo6I8fiIfpSh10Ha57bxLp3GWzutxgfbwaTn6EqrP6TrpW3Dyw0mRoUgU4+7OlHkRT/Hywuzi6 Zad32fSa+9748YZ9wa0IQ7DVwf2qAAmgZ5WckfOF1lexb1LmDnp4GKv9ol/dx61YmAz8U9GS7Od T19yAuH9c79AZTQhjB9Hzy8+AmREDIyQcVwxUgNELtmA4qn7KDfISg5mQUfsbW4di6sjCFgFb0r lS9Fy3yRs+wi0zu9mDAt/oeDX1Z8Up98vf6sD091qnIcTbFsqkhyuQ+THvfXNUQklOQipheq090 3wftF38b5S1A== X-Received: by 2002:a05:693c:4087:b0:2b7:2bbd:95a2 with SMTP id 5a478bee46e88-2b78da4a12fmr2343465eec.40.1769585403387; Tue, 27 Jan 2026 23:30:03 -0800 (PST) Received: from localhost ([2001:19f0:ac00:4eb8:5400:5ff:fe30:7df3]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2b7a16cfc73sm1552992eec.6.2026.01.27.23.30.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Jan 2026 23:30:03 -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 , Lad Prabhakar , Inochi Amaoto , Maxime Chevallier , Choong Yong Liang , Chen-Yu Tsai , Shangjuan Wei , Boon Khai Ng , 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 v3 3/3] net: stmmac: Add glue layer for Spacemit K3 SoC Date: Wed, 28 Jan 2026 15:29:29 +0800 Message-ID: <20260128072931.875041-4-inochiama@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260128072931.875041-1-inochiama@gmail.com> References: <20260128072931.875041-1-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 | 218 ++++++++++++++++++ 3 files changed, 231 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..d5cb91182963 --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-spacemit.c @@ -0,0 +1,218 @@ +// 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_TX_DLINE_STEP | RGMII_TX_DLINE_CODE | RGMII_TX_DLINE_EN | + RGMII_RX_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; + + /* + * Note K3 require a specific factor for calculate + * the delay, in this scenario it is 0.9. So the + * formula is code * step / 10 * 0.9 + */ + 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) +{ + unsigned int rx_config =3D 0; + unsigned int tx_config =3D 0; + int rx_code; + int tx_code; + + 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; + struct clk *clk_tx; + 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"); + + clk_tx =3D devm_clk_get_enabled(&pdev->dev, "tx"); + if (IS_ERR(clk_tx)) + return dev_err_probe(&pdev->dev, PTR_ERR(clk_tx), + "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