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GET /api/patches/2215635/?format=api
{ "id": 2215635, "url": "http://patchwork.ozlabs.org/api/patches/2215635/?format=api", "web_url": "http://patchwork.ozlabs.org/project/openbmc/patch/20260323101756.81849-4-a0987203069@gmail.com/", "project": { "id": 56, "url": "http://patchwork.ozlabs.org/api/projects/56/?format=api", "name": "OpenBMC development", "link_name": "openbmc", "list_id": "openbmc.lists.ozlabs.org", "list_email": "openbmc@lists.ozlabs.org", "web_url": "http://github.com/openbmc/", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260323101756.81849-4-a0987203069@gmail.com>", "list_archive_url": null, "date": "2026-03-23T10:17:56", "name": "[net-next,v15,3/3] net: stmmac: dwmac-nuvoton: Add dwmac glue for Nuvoton MA35 family", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "d3d2abd7323bb9565d302e258f827086fe2dc9f3", "submitter": { "id": 89704, "url": "http://patchwork.ozlabs.org/api/people/89704/?format=api", "name": "Joey Lu", "email": "a0987203069@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/openbmc/patch/20260323101756.81849-4-a0987203069@gmail.com/mbox/", "series": [ { "id": 497355, "url": "http://patchwork.ozlabs.org/api/series/497355/?format=api", "web_url": "http://patchwork.ozlabs.org/project/openbmc/list/?series=497355", "date": "2026-03-23T10:17:53", "name": "Add support for Nuvoton MA35D1 GMAC", "version": 15, "mbox": "http://patchwork.ozlabs.org/series/497355/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2215635/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2215635/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <openbmc+bounces-1709-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "openbmc@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20230601 header.b=m+4OdmBa;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; 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This driver is used for Meson6,\n \t Meson8, Meson8b and GXBB SoCs.\n \n+config DWMAC_NUVOTON\n+\ttristate \"Nuvoton MA35 dwmac support\"\n+\tdefault ARCH_MA35\n+\tdepends on OF && (ARCH_MA35 || COMPILE_TEST)\n+\tselect MFD_SYSCON\n+\thelp\n+\t Support for Ethernet controller on Nuvoton MA35 series SoC.\n+\n+\t This selects the Nuvoton MA35 series SoC glue layer support\n+\t for the stmmac device driver. The nuvoton-dwmac driver is\n+\t used for MA35 series SoCs.\n+\n config DWMAC_QCOM_ETHQOS\n \ttristate \"Qualcomm ETHQOS support\"\n \tdefault ARCH_QCOM\ndiff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile\nindex 945c5354eced..a1cea2f57252 100644\n--- a/drivers/net/ethernet/stmicro/stmmac/Makefile\n+++ b/drivers/net/ethernet/stmicro/stmmac/Makefile\n@@ -20,6 +20,7 @@ obj-$(CONFIG_DWMAC_IPQ806X)\t+= dwmac-ipq806x.o\n obj-$(CONFIG_DWMAC_LPC18XX)\t+= dwmac-lpc18xx.o\n obj-$(CONFIG_DWMAC_MEDIATEK)\t+= dwmac-mediatek.o\n obj-$(CONFIG_DWMAC_MESON)\t+= dwmac-meson.o dwmac-meson8b.o\n+obj-$(CONFIG_DWMAC_NUVOTON)\t+= dwmac-nuvoton.o\n obj-$(CONFIG_DWMAC_QCOM_ETHQOS)\t+= dwmac-qcom-ethqos.o\n obj-$(CONFIG_DWMAC_RENESAS_GBETH) += dwmac-renesas-gbeth.o\n obj-$(CONFIG_DWMAC_ROCKCHIP)\t+= dwmac-rk.o\ndiff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c\nnew file mode 100644\nindex 000000000000..e2240b68ad98\n--- /dev/null\n+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-nuvoton.c\n@@ -0,0 +1,136 @@\n+// SPDX-License-Identifier: GPL-2.0-only\n+/*\n+ * Nuvoton DWMAC specific glue layer\n+ *\n+ * Copyright (C) 2025 Nuvoton Technology Corp.\n+ *\n+ * Author: Joey Lu <a0987203069@gmail.com>\n+ */\n+\n+#include <linux/mfd/syscon.h>\n+#include <linux/mod_devicetable.h>\n+#include <linux/of.h>\n+#include <linux/of_net.h>\n+#include <linux/platform_device.h>\n+#include <linux/regmap.h>\n+#include <linux/stmmac.h>\n+\n+#include \"stmmac_platform.h\"\n+\n+#define NVT_REG_SYS_GMAC0MISCR 0x108\n+#define NVT_REG_SYS_GMAC1MISCR 0x10C\n+\n+#define NVT_MISCR_RMII BIT(0)\n+\n+/* Two thousand picoseconds are evenly mapped to a 4-bit field,\n+ * resulting in each step being 2000/15 picoseconds.\n+ */\n+#define NVT_PATH_DELAY_STEP 134\n+#define NVT_TX_DELAY_MASK GENMASK(19, 16)\n+#define NVT_RX_DELAY_MASK GENMASK(23, 20)\n+\n+struct nvt_priv_data {\n+\tstruct device *dev;\n+\tstruct regmap *regmap;\n+\tu32 macid;\n+};\n+\n+static int nvt_gmac_get_delay(struct device *dev, const char *property)\n+{\n+\tu32 arg;\n+\n+\tif (of_property_read_u32(dev->of_node, property, &arg))\n+\t\treturn 0;\n+\n+\tif (arg > 2000)\n+\t\treturn -EINVAL;\n+\n+\tif (arg == 2000)\n+\t\treturn 15;\n+\n+\treturn arg / NVT_PATH_DELAY_STEP;\n+}\n+\n+static int nvt_set_phy_intf_sel(void *bsp_priv, u8 phy_intf_sel)\n+{\n+\tstruct nvt_priv_data *priv = bsp_priv;\n+\tu32 reg, val;\n+\tint ret;\n+\n+\tif (phy_intf_sel == PHY_INTF_SEL_RGMII) {\n+\t\tret = nvt_gmac_get_delay(priv->dev, \"rx-internal-delay-ps\");\n+\t\tif (ret < 0)\n+\t\t\treturn ret;\n+\t\tval = FIELD_PREP(NVT_RX_DELAY_MASK, ret);\n+\n+\t\tret = nvt_gmac_get_delay(priv->dev, \"tx-internal-delay-ps\");\n+\t\tif (ret < 0)\n+\t\t\treturn ret;\n+\t\tval |= FIELD_PREP(NVT_TX_DELAY_MASK, ret);\n+\t} else if (phy_intf_sel == PHY_INTF_SEL_RMII) {\n+\t\tval = NVT_MISCR_RMII;\n+\t} else {\n+\t\treturn -EINVAL;\n+\t}\n+\n+\treg = (priv->macid == 0) ? NVT_REG_SYS_GMAC0MISCR : NVT_REG_SYS_GMAC1MISCR;\n+\tregmap_update_bits(priv->regmap, reg,\n+\t\t\t NVT_RX_DELAY_MASK | NVT_TX_DELAY_MASK | NVT_MISCR_RMII, val);\n+\n+\treturn 0;\n+}\n+\n+static int nvt_gmac_probe(struct platform_device *pdev)\n+{\n+\tstruct plat_stmmacenet_data *plat_dat;\n+\tstruct stmmac_resources stmmac_res;\n+\tstruct device *dev = &pdev->dev;\n+\tstruct nvt_priv_data *priv;\n+\tint ret;\n+\n+\tret = stmmac_get_platform_resources(pdev, &stmmac_res);\n+\tif (ret)\n+\t\treturn dev_err_probe(dev, ret, \"Failed to get platform resources\\n\");\n+\n+\tplat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);\n+\tif (IS_ERR(plat_dat))\n+\t\treturn dev_err_probe(dev, PTR_ERR(plat_dat), \"Failed to get platform data\\n\");\n+\n+\tpriv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);\n+\tif (!priv)\n+\t\treturn dev_err_probe(dev, -ENOMEM, \"Failed to allocate private data\\n\");\n+\n+\tpriv->regmap = syscon_regmap_lookup_by_phandle_args(dev->of_node, \"nuvoton,sys\",\n+\t\t\t\t\t\t\t 1, &priv->macid);\n+\tif (IS_ERR(priv->regmap))\n+\t\treturn dev_err_probe(dev, PTR_ERR(priv->regmap), \"Failed to get sys register\\n\");\n+\n+\tif (priv->macid > 1)\n+\t\treturn dev_err_probe(dev, -EINVAL, \"Invalid sys arguments\\n\");\n+\n+\tplat_dat->bsp_priv = priv;\n+\tplat_dat->set_phy_intf_sel = nvt_set_phy_intf_sel;\n+\n+\treturn stmmac_pltfr_probe(pdev, plat_dat, &stmmac_res);\n+}\n+\n+static const struct of_device_id nvt_dwmac_match[] = {\n+\t{ .compatible = \"nuvoton,ma35d1-dwmac\"},\n+\t{ }\n+};\n+MODULE_DEVICE_TABLE(of, nvt_dwmac_match);\n+\n+static struct platform_driver nvt_dwmac_driver = {\n+\t.probe = nvt_gmac_probe,\n+\t.remove = stmmac_pltfr_remove,\n+\t.driver = {\n+\t\t.name = \"nuvoton-dwmac\",\n+\t\t.pm\t\t= &stmmac_pltfr_pm_ops,\n+\t\t.of_match_table = nvt_dwmac_match,\n+\t},\n+};\n+module_platform_driver(nvt_dwmac_driver);\n+\n+MODULE_AUTHOR(\"Joey Lu <a0987203069@gmail.com>\");\n+MODULE_DESCRIPTION(\"Nuvoton DWMAC specific glue layer\");\n+MODULE_LICENSE(\"GPL\");\n", "prefixes": [ "net-next", "v15", "3/3" ] }