From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C7E4AEFCE4D for ; Wed, 4 Mar 2026 23:21:53 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4fR7w0545kz3bf8; Thu, 05 Mar 2026 10:21:20 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2607:f8b0:4864:20::633" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1772529632; cv=none; b=NGXHre0jabEVt5RIou5QpekUe3aT2kUV83joGLwQKVSEF47aMbWABuyUWBEPaK8IFyHDveFMO+sESulxU1vxLEIEAifUcyptVdKiBL59zcKJsJ5h4QZeUn3ZdLTo3IpmGcLn/NVmCHN3o8vsE2J+/3MGf8qxmujRbpdFuILHmBOpfBp86FXuYC3E+ts0prd6ZHQDD46uhkzZppILurv/HGiKo1G5mzCwNFz5F5v7lC8DLZbu/f2hK+cE58pT4FWN2JMqCSsmZztls1Yvn3xw46AZt7jeomZxNVpdNu6RnS6QPqaKrmBZClFO8Q4Zpc5esX/OixzOp8oS11xq0roaKw== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1772529632; c=relaxed/relaxed; bh=XSV+AC8eWTk36V/fHXUoLjLGPO33bJQuNND71Ov3wWs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LwpWYe965sT6n/77T97txULWWDA8d8HMgkODG4AV1yjsONFTDBewmSiujv3W3ZC6/duq6aJ7Wch/R1aZctIccKD/g1asDcIBuZ4TavQPaBqZ015Mg5jvnOG6V0hKM37740/EMJqR+91IQtwBW2FhyXhY8cpH09PW7flRFiReDhc8n3t0aB4zr/q/eqpiAbkWGj36s8OfOmRhlaxmpzIg+QuuhdLwz+Zs13kPb5iU81fWHcmir0EaalfW00Z5Xpl4fGresBOlqYF43lbqLhaI5F0j/+z34WvYCG1j0dHG9dkZJ/WjQ0QuKnFM1fswvzNj61TI1iZoXwVUc6A5A5db8Q== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=g3ut/Flg; dkim-atps=neutral; spf=pass (client-ip=2607:f8b0:4864:20::633; helo=mail-pl1-x633.google.com; envelope-from=a0987203069@gmail.com; receiver=lists.ozlabs.org) smtp.mailfrom=gmail.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=g3ut/Flg; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::633; helo=mail-pl1-x633.google.com; envelope-from=a0987203069@gmail.com; receiver=lists.ozlabs.org) Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4fQ9JH3mPjz30Lw for ; Tue, 03 Mar 2026 20:20:31 +1100 (AEDT) Received: by mail-pl1-x633.google.com with SMTP id d9443c01a7336-2ad4d639db3so25006225ad.0 for ; Tue, 03 Mar 2026 01:20:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1772529629; x=1773134429; darn=lists.ozlabs.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=XSV+AC8eWTk36V/fHXUoLjLGPO33bJQuNND71Ov3wWs=; b=g3ut/FlgnzgNdDRB3othNeEYsvTpLpliW4MKKMcFehL0Vzyn9UxzVkKN0VCiDTOVAQ YmUusfnXJdf6UQIsvT0txfZccVrRMWh2emtT7mO8FHHm2XNIeyEaVzjrM5G2GwCUw+Eu mRD+EvIsgP6VcqGOJXoi6X/fGx/i2ZWy6ulSw5XFwCFWBZjX6jq95U/MZYCMSj4nizgD ddlrvyTFmua+KvQnQqtCewV5ysg3gmJ2TIZJcr/lawZLZt25sxWhWZ8T2h0rsoYFuBD1 D2i4DyvQmQjEeUKyVZ9C9yeCSxTdnpkPv8y7LX9I+ZfwFSISGThcItd/92RlEQ3hGrTq 4krw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772529629; x=1773134429; 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=XSV+AC8eWTk36V/fHXUoLjLGPO33bJQuNND71Ov3wWs=; b=i7beq5dPLw3WxYYTrLlF6/YUdtiSPyIb8bYStIR05cSlz4NKU+REz9mQLuL/ISucjQ +7Zqfo2RpXMEMyjPd99X/7L5/sbgbb2xEYbIBuTE38GQLmNOCqYqU831B3AC7Z9Hd18j RPCUw24W8yA83fKIYONrZ51tgeS69QYEqn5qUr6cjK4EkV7mLvmtpBOLyVq54zAUV9Zr dZh35yBWZ8BC+r4rx91QyC8+OSPq3V3OjqwVAnGU1Gr36EnOvh65SFINsvaAIG93QxUz m0S9EO8ZVet4ruRW3nIhUJTkYt8dnJqlBeY6qT7vRNVZbHurEvkTT5zYJUYlk5zBUcdu T6MQ== X-Forwarded-Encrypted: i=1; AJvYcCVh+lnWiTcL84IAYlRw5NMM7mq0gH+ZyKfe0M7pDQibtWXBmL+pHWIEBLSryZVkCigr+aJxRTlz@lists.ozlabs.org X-Gm-Message-State: AOJu0YxntQrjQRXA/KgDMj6CpDCNdct3t1wk/NWlWCJUrtaZTvHZiyXW DQfOHj7Ln0cQt3Lf/chGZVykU40EwvRNMwGk6b8QeTSeQBo0Lf3FWjbp1/Iiyg== X-Gm-Gg: ATEYQzzP4sdUtpwvDCe+ebZaxHPYlDIrd4Nt3PFH3tJ0yGHSauPS8twGuTbaNFxvowV SMNfAKwBslIMYP7yetUICaNQhK8XtVh2Q1S1Pkm/YVhnGH9jqm7/3ekkMr6c27lS4aidgk9ZkEZ z2aZek32kr8UoPRFY9vPIafnMGtLxH62Ol9sU0617j2yrdbUp7SbtBHkIPfvNgLyoLDlduSZ+5M LUH5UcIR968iHbNhgW+sMXlbFDU0fRuDfZtEDVzZVc/Q3a01hiLJYMYqAJS0LIinGg/W3LbiKdj C7n3OURQ7UW2hZcazHBrmYydeu0Ov8JI30VAWuc46uIxHmYYpahVr/r6e0NwSiS0n4a2V3aO2i/ BVV/Gppzmkub7VOq++N9TrduR3ed5wCjjIWXTpMzebjyKiUxdTihh89uFuIR7T3QopjVgTFiauy yTaO5uqWMRuuIqCHZjvnzvLJmBQILP9c4wFXR1+VswIwU2+W/XaQHbV8fosffwkvlOteLr+M6L2 qkRnUgofBkJ X-Received: by 2002:a17:903:1aeb:b0:2ae:6192:8da3 with SMTP id d9443c01a7336-2ae619297cemr15448335ad.42.1772529629524; Tue, 03 Mar 2026 01:20:29 -0800 (PST) Received: from localhost.localdomain (60-250-196-139.hinet-ip.hinet.net. [60.250.196.139]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2adfb69f996sm158777475ad.50.2026.03.03.01.20.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Mar 2026 01:20:29 -0800 (PST) From: Joey Lu To: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, mcoquelin.stm32@gmail.com, richardcochran@gmail.com Cc: alexandre.torgue@foss.st.com, joabreu@synopsys.com, ychuang3@nuvoton.com, schung@nuvoton.com, yclu4@nuvoton.com, peppe.cavallaro@st.com, linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org, linux-stm32@st-md-mailman.stormreply.com, Joey Lu , Andrew Lunn Subject: [PATCH net-next v13 3/3] net: stmmac: dwmac-nuvoton: Add dwmac glue for Nuvoton MA35 family Date: Tue, 3 Mar 2026 17:20:06 +0800 Message-ID: <20260303092006.263715-4-a0987203069@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260303092006.263715-1-a0987203069@gmail.com> References: <20260303092006.263715-1-a0987203069@gmail.com> X-Mailing-List: openbmc@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add support for Gigabit Ethernet on Nuvoton MA35 series using dwmac driver. Reviewed-by: Andrew Lunn Signed-off-by: Joey Lu --- drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 ++ drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + .../ethernet/stmicro/stmmac/dwmac-nuvoton.c | 136 ++++++++++++++++++ 3 files changed, 149 insertions(+) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig index 07088d03dbab..861f1c6c14f1 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig @@ -132,6 +132,18 @@ config DWMAC_MESON the stmmac device driver. This driver is used for Meson6, Meson8, Meson8b and GXBB SoCs. +config DWMAC_NUVOTON + tristate "Nuvoton MA35 dwmac support" + default ARCH_MA35 + depends on OF && (ARCH_MA35 || COMPILE_TEST) + select MFD_SYSCON + help + Support for Ethernet controller on Nuvoton MA35 series SoC. + + This selects the Nuvoton MA35 series SoC glue layer support + for the stmmac device driver. The nuvoton-dwmac driver is + used for MA35 series SoCs. + config DWMAC_QCOM_ETHQOS tristate "Qualcomm ETHQOS support" default ARCH_QCOM diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile index c9263987ef8d..4ade030b634f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Makefile +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile @@ -20,6 +20,7 @@ obj-$(CONFIG_DWMAC_IPQ806X) += dwmac-ipq806x.o obj-$(CONFIG_DWMAC_LPC18XX) += dwmac-lpc18xx.o obj-$(CONFIG_DWMAC_MEDIATEK) += dwmac-mediatek.o obj-$(CONFIG_DWMAC_MESON) += dwmac-meson.o dwmac-meson8b.o +obj-$(CONFIG_DWMAC_NUVOTON) += dwmac-nuvoton.o obj-$(CONFIG_DWMAC_QCOM_ETHQOS) += dwmac-qcom-ethqos.o obj-$(CONFIG_DWMAC_RENESAS_GBETH) += dwmac-renesas-gbeth.o obj-$(CONFIG_DWMAC_ROCKCHIP) += dwmac-rk.o diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c new file mode 100644 index 000000000000..80f1d7419d46 --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c @@ -0,0 +1,136 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Nuvoton DWMAC specific glue layer + * + * Copyright (C) 2025 Nuvoton Technology Corp. + * + * Author: Joey Lu + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "stmmac_platform.h" + +#define NVT_REG_SYS_GMAC0MISCR 0x108 +#define NVT_REG_SYS_GMAC1MISCR 0x10C + +#define NVT_MISCR_RMII BIT(0) + +/* Two thousand picoseconds are evenly mapped to a 4-bit field, + * resulting in each step being 2000/15 picoseconds. + */ +#define NVT_PATH_DELAY_STEP 134 +#define NVT_TX_DELAY_MASK GENMASK(19, 16) +#define NVT_RX_DELAY_MASK GENMASK(23, 20) + +struct nvt_priv_data { + struct device *dev; + struct regmap *regmap; + u32 macid; +}; + +static int nvt_gmac_get_delay(struct device *dev, const char *property) +{ + u32 arg; + + if (of_property_read_u32(dev->of_node, property, &arg)) + return 0; + + if (arg > 2000) + return -EINVAL; + + if (arg == 2000) + return 15; + + return arg / NVT_PATH_DELAY_STEP; +} + +static int nvt_set_phy_intf_sel(void *bsp_priv, u8 phy_intf_sel) +{ + struct nvt_priv_data *priv = bsp_priv; + u32 reg, val; + int ret; + + if (phy_intf_sel == PHY_INTF_SEL_RGMII) { + ret = nvt_gmac_get_delay(priv->dev, "rx-internal-delay-ps"); + if (ret < 0) + return ret; + val = FIELD_PREP(NVT_RX_DELAY_MASK, ret); + + ret = nvt_gmac_get_delay(priv->dev, "tx-internal-delay-ps"); + if (ret < 0) + return ret; + val |= FIELD_PREP(NVT_TX_DELAY_MASK, ret); + } else if (phy_intf_sel == PHY_INTF_SEL_RMII) { + val = NVT_MISCR_RMII; + } else { + return -EINVAL; + } + + reg = (priv->macid == 0) ? NVT_REG_SYS_GMAC0MISCR : NVT_REG_SYS_GMAC1MISCR; + regmap_update_bits(priv->regmap, reg, + NVT_RX_DELAY_MASK | NVT_TX_DELAY_MASK | NVT_MISCR_RMII, val); + + return 0; +} + +static int nvt_gmac_probe(struct platform_device *pdev) +{ + struct plat_stmmacenet_data *plat_dat; + struct stmmac_resources stmmac_res; + struct device *dev = &pdev->dev; + struct nvt_priv_data *priv; + int ret; + + ret = stmmac_get_platform_resources(pdev, &stmmac_res); + if (ret) + return dev_err_probe(dev, ret, "Failed to get platform resources\n"); + + plat_dat = 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 get platform data\n"); + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return dev_err_probe(dev, -ENOMEM, "Failed to allocate private data\n"); + + priv->regmap = syscon_regmap_lookup_by_phandle_args(dev->of_node, "nuvoton,sys", + 1, &priv->macid); + if (IS_ERR(priv->regmap)) + ret = dev_err_probe(dev, PTR_ERR(priv->regmap), "Failed to get sys register\n"); + + if (priv->macid > 1) + ret = dev_err_probe(dev, -EINVAL, "Invalid sys arguments\n"); + + plat_dat->bsp_priv = priv; + plat_dat->set_phy_intf_sel = nvt_set_phy_intf_sel; + + return stmmac_pltfr_probe(pdev, plat_dat, &stmmac_res); +} + +static const struct of_device_id nvt_dwmac_match[] = { + { .compatible = "nuvoton,ma35d1-dwmac"}, + { } +}; +MODULE_DEVICE_TABLE(of, nvt_dwmac_match); + +static struct platform_driver nvt_dwmac_driver = { + .probe = nvt_gmac_probe, + .remove = stmmac_pltfr_remove, + .driver = { + .name = "nuvoton-dwmac", + .pm = &stmmac_pltfr_pm_ops, + .of_match_table = nvt_dwmac_match, + }, +}; +module_platform_driver(nvt_dwmac_driver); + +MODULE_AUTHOR("Joey Lu "); +MODULE_DESCRIPTION("Nuvoton DWMAC specific glue layer"); +MODULE_LICENSE("GPL"); -- 2.43.0