From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from azure-sdnproxy.icoremail.net (azure-sdnproxy.icoremail.net [4.193.249.245]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 7E4181E7C27; Wed, 30 Jul 2025 07:42:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=4.193.249.245 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753861337; cv=none; b=FwWeyOF/QROMmzbI8qqtsB0JxlvDVeFRHFlfcAaShEXudl4IDizNv6cnRu6IXXGwLtwuU1IhO1boV05uUKAdknPtKB72dMHOlt89qDxF/U4AUGj8UEVhDwLQ47IxiJx3m3dcHal4sJrVYzi2ZRQ7d4ZMXmC6/mfIfSWKiJpv3iw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753861337; c=relaxed/simple; bh=Jy5buhfNQWEdoYecamEiCJwtPxunZbYDYXWlN6ah0AE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pO/4D1NV5uV6TloEUqPSzHC1+vlYCnhMOlEETE2QB6V5ianSFkhJXRiV1QB9eR2VsvCuIq5/gqR/QOUqXNcqn+IEZL7SAvqWvp8IgSXkLTkhqjj+/ZDpWqw3yoWjEXxM5+zO+A420FMtangNtOJUXKKYMu7CR383QrwxGL7PKso= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=eswincomputing.com; spf=pass smtp.mailfrom=eswincomputing.com; arc=none smtp.client-ip=4.193.249.245 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=eswincomputing.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=eswincomputing.com Received: from E0004758DT.eswin.cn (unknown [10.12.96.83]) by app2 (Coremail) with SMTP id TQJkCgBn+ZLGzIlo8OC4AA--.27051S2; Wed, 30 Jul 2025 15:41:59 +0800 (CST) From: zhangsenchuan@eswincomputing.com To: gregkh@linuxfoundation.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Thinh.Nguyen@synopsys.com, p.zabel@pengutronix.de Cc: ningyu@eswincomputing.com, linmin@eswincomputing.com, yangwei1@eswincomputing.com, pinkesh.vaghela@einfochips.com, Senchuan Zhang Subject: [PATCH v2 2/2] usb: dwc3: eic7700: Add EIC7700 USB driver Date: Wed, 30 Jul 2025 15:41:55 +0800 Message-ID: <20250730074156.1600-1-zhangsenchuan@eswincomputing.com> X-Mailer: git-send-email 2.49.0.windows.1 In-Reply-To: <20250730073953.1623-1-zhangsenchuan@eswincomputing.com> References: <20250730073953.1623-1-zhangsenchuan@eswincomputing.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:TQJkCgBn+ZLGzIlo8OC4AA--.27051S2 X-Coremail-Antispam: 1UD129KBjvJXoWxuFW8Jw47Xw1rWryrWw4fGrg_yoW3JFy3pF 4UJFy5KrZ3Gr4xXw4fAF1v9F4rJw40gFy8JrWIg3Zruw18tas7XF1kKFyYgFn8AFn8JFy5 JF4DKayFkF4Y9rJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUBv14x267AKxVW8JVW5JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26w1j6s0DM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4U JVWxJr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gc CE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E 2Ix0cI8IcVAFwI0_Jrv_JF1lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJV W8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7CjxVA2 Y2ka0xkIwI1lw4CEc2x0rVAKj4xxMxkF7I0En4kS14v26r1q6r43MxkIecxEwVCm-wCF04 k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18 MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr4 1lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1l IxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4 A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUHCJQUUUUU= X-CM-SenderInfo: x2kd0wpvhquxxxdqqvxvzl0uprps33xlqjhudrp/ From: Senchuan Zhang Add the eic7700 usb driver, which is responsible for identifying,configuring and connecting usb devices. Co-developed-by: Wei Yang Signed-off-by: Wei Yang Signed-off-by: Senchuan Zhang --- drivers/usb/dwc3/Kconfig | 11 ++ drivers/usb/dwc3/Makefile | 1 + drivers/usb/dwc3/dwc3-eic7700.c | 207 ++++++++++++++++++++++++++++++++ 3 files changed, 219 insertions(+) create mode 100644 drivers/usb/dwc3/dwc3-eic7700.c diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index 310d182e10b5..19657cfb5d08 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -189,4 +189,15 @@ config USB_DWC3_RTK or dual-role mode. Say 'Y' or 'M' if you have such device. +config USB_DWC3_EIC7700 + tristate "Eswin Platforms" + depends on OF + depends on USB=y || USB=USB_DWC3 + default USB_DWC3 + help + The usb controller on eic7700 SoC. + support of USB2/3 functionality + in Eswin platforms. + say 'Y' or 'M' if you have one such device. + endif diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 830e6c9e5fe0..05f582103f8b 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -57,3 +57,4 @@ obj-$(CONFIG_USB_DWC3_IMX8MP) += dwc3-imx8mp.o obj-$(CONFIG_USB_DWC3_XILINX) += dwc3-xilinx.o obj-$(CONFIG_USB_DWC3_OCTEON) += dwc3-octeon.o obj-$(CONFIG_USB_DWC3_RTK) += dwc3-rtk.o +obj-$(CONFIG_USB_DWC3_EIC7700) += dwc3-eic7700.o diff --git a/drivers/usb/dwc3/dwc3-eic7700.c b/drivers/usb/dwc3/dwc3-eic7700.c new file mode 100644 index 000000000000..337f6c1cbe66 --- /dev/null +++ b/drivers/usb/dwc3/dwc3-eic7700.c @@ -0,0 +1,207 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Eswin Specific Glue layer + * + * Copyright 2025, Beijing ESWIN Computing Technology Co., Ltd. + * + * Authors: Wei Yang + * Senchuan Zhang + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define HSP_USB_VBUS_FSEL 0x2a +#define HSP_USB_MPLL_DEFAULT 0x0 + +#define HSP_USB_BUS_FILTER_EN (0x1 << 0) +#define HSP_USB_BUS_CLKEN_GM (0x1 << 9) +#define HSP_USB_BUS_CLKEN_GS (0x1 << 16) +#define HSP_USB_BUS_SW_RST (0x1 << 24) +#define HSP_USB_BUS_CLK_EN (0x1 << 28) + +#define HSP_USB_AXI_LP_XM_CSYSREQ (0x1 << 0) +#define HSP_USB_AXI_LP_XS_CSYSREQ (0x1 << 16) + +struct dwc3_eswin { + int num_clks; + struct device *dev; + struct clk_bulk_data *clks; + struct reset_control *vaux_rst; +}; + +static int dwc_usb_clk_init(struct device *dev) +{ + struct regmap *regmap; + u32 hsp_usb_bus; + u32 hsp_usb_axi_lp; + u32 hsp_usb_vbus_freq; + u32 hsp_usb_mpll; + u32 args[4]; + + regmap = syscon_regmap_lookup_by_phandle_args(dev->of_node, + "eswin,hsp-sp-csr", 4, + args); + if (IS_ERR(regmap)) { + dev_err(dev, "No hsp-sp-csr phandle specified\n"); + return PTR_ERR(regmap); + } + + hsp_usb_bus = args[0]; + hsp_usb_axi_lp = args[1]; + hsp_usb_vbus_freq = args[2]; + hsp_usb_mpll = args[3]; + + /* + * usb clock init + * ref clock is 24M, below need to be set to satisfy + * usb phy requirement(125M) + */ + regmap_write(regmap, hsp_usb_vbus_freq, HSP_USB_VBUS_FSEL); + regmap_write(regmap, hsp_usb_mpll, HSP_USB_MPLL_DEFAULT); + /* + * reset usb core and usb phy + */ + regmap_write(regmap, hsp_usb_bus, HSP_USB_BUS_FILTER_EN | + HSP_USB_BUS_CLKEN_GM | HSP_USB_BUS_CLKEN_GS | + HSP_USB_BUS_SW_RST | HSP_USB_BUS_CLK_EN); + regmap_write(regmap, hsp_usb_axi_lp, HSP_USB_AXI_LP_XM_CSYSREQ | + HSP_USB_AXI_LP_XS_CSYSREQ); + + return 0; +} + +static int dwc3_eswin_probe(struct platform_device *pdev) +{ + struct dwc3_eswin *eswin; + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + int ret; + + eswin = devm_kzalloc(dev, sizeof(*eswin), GFP_KERNEL); + if (!eswin) + return -ENOMEM; + + eswin->dev = dev; + platform_set_drvdata(pdev, eswin); + + eswin->num_clks = devm_clk_bulk_get_all_enabled(dev, &eswin->clks); + if (eswin->num_clks < 0) + return dev_err_probe(dev, eswin->num_clks, + "Failed to get usb clocks\n"); + + eswin->vaux_rst = devm_reset_control_get(dev, "vaux"); + if (IS_ERR(eswin->vaux_rst)) + return dev_err_probe(dev, PTR_ERR(eswin->vaux_rst), + "Failed to get vaux reset\n"); + + ret = reset_control_deassert(eswin->vaux_rst); + if (ret) + return dev_err_probe(eswin->dev, ret, + "Failed to deassert reset\n"); + + ret = dwc_usb_clk_init(dev); + if (ret) { + dev_err(eswin->dev, "Failed to clk init: %d\n", ret); + goto reset_assert; + } + + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + dev_err(dev, "get_sync failed with err %d\n", ret); + goto disable_pm; + } + + /* Allocate and initialize the core */ + ret = of_platform_populate(np, NULL, NULL, dev); + if (ret) { + dev_err(dev, "failed to create dwc3 core: %d\n", ret); + goto put_pm; + } + + return ret; + +put_pm: + pm_runtime_put_sync(dev); +disable_pm: + pm_runtime_disable(dev); +reset_assert: + reset_control_assert(eswin->vaux_rst); + + return ret; +} + +static void dwc3_eswin_remove(struct platform_device *pdev) +{ + struct dwc3_eswin *eswin = platform_get_drvdata(pdev); + struct device *dev = &pdev->dev; + + of_platform_depopulate(dev); + + pm_runtime_put_sync(dev); + pm_runtime_disable(dev); + reset_control_assert(eswin->vaux_rst); +} + +static int __maybe_unused dwc3_eswin_runtime_suspend(struct device *dev) +{ + struct dwc3_eswin *eswin = dev_get_drvdata(dev); + + clk_bulk_disable_unprepare(eswin->num_clks, eswin->clks); + + return 0; +} + +static int __maybe_unused dwc3_eswin_runtime_resume(struct device *dev) +{ + struct dwc3_eswin *eswin = dev_get_drvdata(dev); + int ret; + + ret = clk_bulk_prepare_enable(eswin->num_clks, eswin->clks); + if (ret) { + dev_err(dev, "failed to enable clocks: %d\n", ret); + return ret; + } + + return ret; +} + +static const struct dev_pm_ops dwc3_eswin_dev_pm_ops = { + SET_RUNTIME_PM_OPS(dwc3_eswin_runtime_suspend, + dwc3_eswin_runtime_resume, NULL) +}; + +static const struct of_device_id eswin_dwc3_match[] = { + { .compatible = "eswin,eic7700-dwc3" }, + {}, +}; + +MODULE_DEVICE_TABLE(of, eswin_dwc3_match); + +static struct platform_driver dwc3_eswin_driver = { + .probe = dwc3_eswin_probe, + .remove = dwc3_eswin_remove, + .driver = { + .name = "eic7700-dwc3", + .pm = &dwc3_eswin_dev_pm_ops, + .of_match_table = eswin_dwc3_match, + }, +}; + +module_platform_driver(dwc3_eswin_driver); + +MODULE_AUTHOR("Wei Yang