From patchwork Mon Apr 7 12:38:47 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ze Huang X-Patchwork-Id: 879023 Received: from mail-m49198.qiye.163.com (mail-m49198.qiye.163.com [45.254.49.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B58522505D2; Mon, 7 Apr 2025 12:39:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.254.49.198 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744029594; cv=none; b=Y1b1w/4xpK7Aphr1eJe3tNa/B5jVEhv5Fq5NsYMaKMQpH9xDFz/XEcOKQF/xEmu4IZt1WE6PgEOuPqM/j7RnFuJhOdckv7M9mA1NUz1/lKfdQeQuNTbKqvqadbF2bA0lGX7r9a7kwEr2umtStUA5mUvachx5xtHEGN2Bg//U1OU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744029594; c=relaxed/simple; bh=aQ1UuXr0QokrlXqm1mkiZkV7xA2Eksfk8+Uzf96R36c=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=hXjvY0p1+qhGJCtW8Rq3jXkbYEfOds6hXmIO5LTniKd9tfDpN+Tld5NHyFRExV6u48X2azrfTfeQ+NpWh62wukZAkysa/fgzB7fJdY2zled+89Ffs++ImvxuyDaw9aa8y2If5vOOmn9FpM6iu9JC9Pp+eyYta6gNgtpGvgX/YuI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=whut.edu.cn; spf=pass smtp.mailfrom=whut.edu.cn; arc=none smtp.client-ip=45.254.49.198 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=whut.edu.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=whut.edu.cn Received: from [127.0.0.1] (gy-adaptive-ssl-proxy-2-entmail-virt205.gy.ntes [27.18.106.237]) by smtp.qiye.163.com (Hmail) with ESMTP id 10ef566ea; Mon, 7 Apr 2025 20:39:41 +0800 (GMT+08:00) From: Ze Huang Date: Mon, 07 Apr 2025 20:38:47 +0800 Subject: [PATCH 2/7] dt-bindings: phy: spacemit: add K1 PCIe/USB3 combo PHY Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250407-b4-k1-usb3-v3-2-v1-2-bf0bcc41c9ba@whut.edu.cn> References: <20250407-b4-k1-usb3-v3-2-v1-0-bf0bcc41c9ba@whut.edu.cn> In-Reply-To: <20250407-b4-k1-usb3-v3-2-v1-0-bf0bcc41c9ba@whut.edu.cn> To: Vinod Koul , Kishon Vijay Abraham I , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Ze Huang , Greg Kroah-Hartman , Philipp Zabel , Thinh Nguyen , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1744029565; l=1859; i=huangze@whut.edu.cn; s=20250325; h=from:subject:message-id; bh=aQ1UuXr0QokrlXqm1mkiZkV7xA2Eksfk8+Uzf96R36c=; b=iMysvMhswOHuOw6sKRzqorGENfr+yTpZptaidrXYdi4w2snquFxjPfw6h6dM82qFxBLQizPTZ NbnC3H8zupuBJID1VwH0D5gukeZERLrOc3xRJXuKBGdTkg6G+dddYbS X-Developer-Key: i=huangze@whut.edu.cn; a=ed25519; pk=C3zfn/kH6oMJickaXBa8dxTZO68EBiD93F+tAenboRA= X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWS1ZQUlXWQ8JGhUIEh9ZQVlDGkgfVklPGUJOTx1JHkodT1YeHw5VEwETFhoSFy QUDg9ZV1kYEgtZQVlJTFVKQ1VKS01VSUhMWVdZFhoPEhUdFFlBWU9LSFVKS0hKTkxOVUpLS1VKQk tLWQY+ X-HM-Tid: 0a961043805603a1kunm10ef566ea X-HM-MType: 10 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6PxA6Dzo*NjJMD0wKKBVNGjhM GRUaCi5VSlVKTE9PS0lCTkNDSk9OVTMWGhIXVRMOGhUcAR47DBMOD1UeHw5VGBVFWVdZEgtZQVlJ TFVKQ1VKS01VSUhMWVdZCAFZQUhOS043Bg++ Introduce support for SpacemiT K1 PCIe/USB3 combo PHY controller. PCIe portA and USB3 controller share this phy, only one of them can work at any given application scenario. Signed-off-by: Ze Huang --- .../bindings/phy/spacemit,k1-combphy.yaml | 53 ++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/spacemit,k1-combphy.yaml b/Documentation/devicetree/bindings/phy/spacemit,k1-combphy.yaml new file mode 100644 index 0000000000000000000000000000000000000000..450157b65410b27129603ea1f3523776a1b0a75e --- /dev/null +++ b/Documentation/devicetree/bindings/phy/spacemit,k1-combphy.yaml @@ -0,0 +1,53 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/spacemit,k1-combphy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Spacemit K1 PCIe/USB3 PHY + +maintainers: + - Ze Huang + +description: + Combo PHY on SpacemiT K1 SoC.PCIe port A and USB3 controller share this + phy, only one of PCIe port A and USB3 port can work at any given application + scenario. + +properties: + compatible: + const: spacemit,k1-combphy + + reg: + maxItems: 2 + + reg-names: + items: + - const: phy_ctrl + - const: phy_sel + + resets: + maxItems: 1 + + "#phy-cells": + const: 1 + +required: + - compatible + - reg + - reg-names + - resets + - "#phy-cells" + +additionalProperties: false + +examples: + - | + phy@c0b10000 { + compatible = "spacemit,k1-combphy"; + reg = <0xc0b10000 0x800>, + <0xd4282910 0x400>; + reg-names = "phy_ctrl", "phy_sel"; + resets = <&syscon_apmu 19>; + #phy-cells = <1>; + }; From patchwork Mon Apr 7 12:38:49 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ze Huang X-Patchwork-Id: 879022 Received: from mail-m155101.qiye.163.com (mail-m155101.qiye.163.com [101.71.155.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DFF7B24E4A8; Mon, 7 Apr 2025 12:40:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=101.71.155.101 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744029608; cv=none; b=JkuXjlsWm12ioJtzktnW1PcX05xBdtmBDlRXu4a6r760FBELFvgTgkoYnHunoNpbPWjS7jfn9Ck6MKXlmva+k28plt45BOAm8CQv9vNqNHpINwrteoG+qP2Izr21xvdgDr67QIl32T59LzpdMYTQva3N757SXjvUFdQAe6jl6m0= ARC-Message-Signature: i=1; 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Signed-off-by: Ze Huang --- drivers/phy/Kconfig | 1 + drivers/phy/Makefile | 1 + drivers/phy/spacemit/Kconfig | 12 ++++ drivers/phy/spacemit/Makefile | 2 + drivers/phy/spacemit/phy-k1-usb2.c | 132 +++++++++++++++++++++++++++++++++++++ 5 files changed, 148 insertions(+) diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index 8d58efe998ec5fd50054eed2c90d6ecce6bd5dd8..fca589aa7926eb5bce14e99785cf32cf0395202e 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -114,6 +114,7 @@ source "drivers/phy/renesas/Kconfig" source "drivers/phy/rockchip/Kconfig" source "drivers/phy/samsung/Kconfig" source "drivers/phy/socionext/Kconfig" +source "drivers/phy/spacemit/Kconfig" source "drivers/phy/st/Kconfig" source "drivers/phy/starfive/Kconfig" source "drivers/phy/sunplus/Kconfig" diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index e281442acc752820fe0bd638dfe38986a37c2a78..05993ff8a15daf7e2583b5f9b9b37ac584a30609 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -34,6 +34,7 @@ obj-y += allwinner/ \ rockchip/ \ samsung/ \ socionext/ \ + spacemit/ \ st/ \ starfive/ \ sunplus/ \ diff --git a/drivers/phy/spacemit/Kconfig b/drivers/phy/spacemit/Kconfig new file mode 100644 index 0000000000000000000000000000000000000000..f0c2a33f53cc810e71c6140ae957aa68a2b6ff0c --- /dev/null +++ b/drivers/phy/spacemit/Kconfig @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Phy drivers for SpacemiT platforms +# +config PHY_SPACEMIT_K1_USB2 + tristate "SpacemiT K1 USB 2.0 PHY support" + depends on USB || USB_GADGET + depends on ARCH_SPACEMIT || COMPILE_TEST + select USB_PHY + help + Enable this to support K1 USB 2.0 PHY driver. This driver takes care of + enabling and clock setup and will be used by K1 udc/ehci/otg driver. diff --git a/drivers/phy/spacemit/Makefile b/drivers/phy/spacemit/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..fec0b425a948541b39b814caef0b05e1e002d92f --- /dev/null +++ b/drivers/phy/spacemit/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_PHY_SPACEMIT_K1_USB2) += phy-k1-usb2.o diff --git a/drivers/phy/spacemit/phy-k1-usb2.c b/drivers/phy/spacemit/phy-k1-usb2.c new file mode 100644 index 0000000000000000000000000000000000000000..acbf6a0ebad0ee6b53cc7fd89bad4780c7b7cab5 --- /dev/null +++ b/drivers/phy/spacemit/phy-k1-usb2.c @@ -0,0 +1,132 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * SpacemiT K1 USB 2.0 PHY driver + * + * Copyright (C) 2025 SpacemiT (Hangzhou) Technology Co. Ltd + * Copyright (C) 2025 Ze Huang + */ + +#include +#include +#include +#include + +#define USB2_PHY_REG01 0x04 +#define USB2_PHY_REG01_VAL 0x60ef +#define USB2_PHY_REG01_PLL_IS_READY BIT(0) +#define USB2_PHY_REG04 0x10 +#define USB2_PHY_REG04_AUTO_CLEAR_DIS BIT(2) +#define USB2_PHY_REG0D 0x34 +#define USB2_PHY_REG0D_VAL 0x1c +#define USB2_PHY_REG26 0x98 +#define USB2_PHY_REG26_VAL 0xbec4 + +#define USB2D_CTRL_RESET_TIME_MS 50 + +struct spacemit_usb2phy { + struct phy *phy; + struct clk *clk; + void __iomem *base; +}; + +static int spacemit_usb2phy_init(struct phy *phy) +{ + struct spacemit_usb2phy *sphy = phy_get_drvdata(phy); + void __iomem *base = sphy->base; + u32 val; + int ret; + + ret = clk_prepare_enable(sphy->clk); + if (ret) { + dev_err(&phy->dev, "failed to enable clock\n"); + return ret; + } + + /* + * make sure the usb controller is not under reset process before + * any configuration + */ + usleep_range(150, 200); + writel(USB2_PHY_REG26_VAL, base + USB2_PHY_REG26); /* 24M ref clk */ + + ret = read_poll_timeout(readl, val, (val & USB2_PHY_REG01_PLL_IS_READY), + 500, USB2D_CTRL_RESET_TIME_MS * 1000, true, + base + USB2_PHY_REG01); + if (ret) { + dev_err(&phy->dev, "wait PHY_REG01[PLLREADY] timeout\n"); + return ret; + } + + /* release usb2 phy internal reset and enable clock gating */ + writel(USB2_PHY_REG01_VAL, base + USB2_PHY_REG01); + writel(USB2_PHY_REG0D_VAL, base + USB2_PHY_REG0D); + + /* auto clear host disc */ + val = readl(base + USB2_PHY_REG04); + val |= USB2_PHY_REG04_AUTO_CLEAR_DIS; + writel(val, base + USB2_PHY_REG04); + + return 0; +} + +static int spacemit_usb2phy_exit(struct phy *phy) +{ + struct spacemit_usb2phy *sphy = phy_get_drvdata(phy); + + clk_disable_unprepare(sphy->clk); + + return 0; +} + +static const struct phy_ops spacemit_usb_phy_ops = { + .init = spacemit_usb2phy_init, + .exit = spacemit_usb2phy_exit, + .owner = THIS_MODULE, +}; + +static int spacemit_usb2phy_probe(struct platform_device *pdev) +{ + struct phy_provider *phy_provider; + struct device *dev = &pdev->dev; + struct spacemit_usb2phy *sphy; + + sphy = devm_kzalloc(dev, sizeof(*sphy), GFP_KERNEL); + if (!sphy) + return -ENOMEM; + + sphy->clk = devm_clk_get_prepared(&pdev->dev, NULL); + if (IS_ERR(sphy->clk)) + return dev_err_probe(dev, PTR_ERR(sphy->clk), "Failed to get clock\n"); + + sphy->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(sphy->base)) + return PTR_ERR(sphy->base); + + sphy->phy = devm_phy_create(dev, NULL, &spacemit_usb_phy_ops); + if (IS_ERR(sphy->phy)) + return dev_err_probe(dev, PTR_ERR(sphy->phy), "Failed to create phy\n"); + + phy_set_drvdata(sphy->phy, sphy); + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + + return PTR_ERR_OR_ZERO(phy_provider); +} + +static const struct of_device_id spacemit_usb2phy_dt_match[] = { + { .compatible = "spacemit,k1-usb2-phy", }, + { /* sentinal */ } +}; +MODULE_DEVICE_TABLE(of, spacemit_usb2phy_dt_match); + +static struct platform_driver spacemit_usb2_phy_driver = { + .probe = spacemit_usb2phy_probe, + .driver = { + .name = "spacemit-usb2-phy", + .owner = THIS_MODULE, + .of_match_table = spacemit_usb2phy_dt_match, + }, +}; +module_platform_driver(spacemit_usb2_phy_driver); + +MODULE_DESCRIPTION("Spacemit USB 2.0 PHY driver"); +MODULE_LICENSE("GPL"); From patchwork Mon Apr 7 12:38:51 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ze Huang X-Patchwork-Id: 879021 Received: from mail-m49197.qiye.163.com (mail-m49197.qiye.163.com [45.254.49.197]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B24AA2505CE; Mon, 7 Apr 2025 12:40:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.254.49.197 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744029624; cv=none; b=n5T5+3+EJ/wy3/lMkfwfC1tD71V4e42EfoWpAFXITUheDm2Xa8umVg5lAkmcvagu6Z2mTL47uC9Bq0ZBiuQbLtDjIu9cm/Wc2N00VB1mQAT7qmpFyJLzMZ6AhB0QJN4Sdh3aB7I/OTBHTbPKyjWReXrFNGN6HJDaFPlCv2TmreA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744029624; c=relaxed/simple; bh=Fd/9MKedec8AShJy/y3d+yVIscBZfEuehyAXjlgnTKA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=sms2ToXkOBJyVKecCC0mNoQRbS/sxkC7xYRTpcguH+nwjBshZ6+EnXxc62TcGmzju3Ssb10bp6i0qzW2L3lYKWOtGhtrssSFHnNZbdAeUK0I8bQcfXTX7r2YfcEWwBpILBnrmR2+Cf4XB5+6JvI7ImbNABi5vY905zroNHUNb2Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=whut.edu.cn; spf=pass smtp.mailfrom=whut.edu.cn; arc=none smtp.client-ip=45.254.49.197 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=whut.edu.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=whut.edu.cn Received: from [127.0.0.1] (gy-adaptive-ssl-proxy-2-entmail-virt205.gy.ntes [27.18.106.237]) by smtp.qiye.163.com (Hmail) with ESMTP id 10f021904; Mon, 7 Apr 2025 20:40:12 +0800 (GMT+08:00) From: Ze Huang Date: Mon, 07 Apr 2025 20:38:51 +0800 Subject: [PATCH 6/7] usb: dwc3: add spacemit dwc3 glue layer driver Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250407-b4-k1-usb3-v3-2-v1-6-bf0bcc41c9ba@whut.edu.cn> References: <20250407-b4-k1-usb3-v3-2-v1-0-bf0bcc41c9ba@whut.edu.cn> In-Reply-To: <20250407-b4-k1-usb3-v3-2-v1-0-bf0bcc41c9ba@whut.edu.cn> To: Vinod Koul , Kishon Vijay Abraham I , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Ze Huang , Greg Kroah-Hartman , Philipp Zabel , Thinh Nguyen , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1744029565; l=5058; i=huangze@whut.edu.cn; s=20250325; h=from:subject:message-id; bh=Fd/9MKedec8AShJy/y3d+yVIscBZfEuehyAXjlgnTKA=; b=0oUjkiZkghcan3Psxy1PQme5aj6x1I1dcVUwNTyPXUaLSXxVPZ0e6STZc1N2XerGnhy5DyYpF CIkNmhVHWDHAM5Gc+FVLzCdtgoY3vrDb2i6BxTZdIXmyjD/kZoCS4ZX X-Developer-Key: i=huangze@whut.edu.cn; a=ed25519; pk=C3zfn/kH6oMJickaXBa8dxTZO68EBiD93F+tAenboRA= X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWS1ZQUlXWQ8JGhUIEh9ZQVlDTE8eVkkZQk9OHxhOHRoYGlYeHw5VEwETFhoSFy QUDg9ZV1kYEgtZQVlJTFVKQ1VKS01VSUhMWVdZFhoPEhUdFFlBWU9LSFVKS0hKTkxOVUpLS1VKQk tLWQY+ X-HM-Tid: 0a961043f94e03a1kunm10f021904 X-HM-MType: 10 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6Ngw6AQw4LjICA0woEhYrGjoT Qw9PCQJVSlVKTE9PS0lCTUpCSkJDVTMWGhIXVRMOGhUcAR47DBMOD1UeHw5VGBVFWVdZEgtZQVlJ TFVKQ1VKS01VSUhMWVdZCAFZQU1NQk03Bg++ Add SpacemiT glue logic to support dwc3 HC on K1 SoC. The driver manages clock, reset and interrupt resource. Signed-off-by: Ze Huang --- drivers/usb/dwc3/Kconfig | 7 +++ drivers/usb/dwc3/Makefile | 1 + drivers/usb/dwc3/dwc3-spacemit.c | 127 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 135 insertions(+) diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index 310d182e10b50b253d7e5a51674806e6ec442a2a..3c30680fa4f83565fc03c6800e867c6ced0fe101 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -189,4 +189,11 @@ config USB_DWC3_RTK or dual-role mode. Say 'Y' or 'M' if you have such device. +config USB_DWC3_SPACEMIT + tristate "Spacemit Platforms" + default USB_DWC3 + help + Support SPACEMIT platforms with DesignWare Core USB3 IP. + Say 'Y' or 'M' here if you have one such device + endif diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 124eda2522d9c1f4caab222ec9770d0deaf655fc..61a87765c0c591e0a53c33b5a6544db056166f96 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -56,3 +56,4 @@ 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_SPACEMIT) += dwc3-spacemit.o diff --git a/drivers/usb/dwc3/dwc3-spacemit.c b/drivers/usb/dwc3/dwc3-spacemit.c new file mode 100644 index 0000000000000000000000000000000000000000..4574ad3b34a200ffe999c7da61b74c2ef33c0483 --- /dev/null +++ b/drivers/usb/dwc3/dwc3-spacemit.c @@ -0,0 +1,127 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * dwc3-spacemit.c - Spacemit DWC3 Specific Glue layer + * + * Copyright (C) 2025 SpacemiT (Hangzhou) Technology Co. Ltd + * + * Author: Wilson + * Contributor: Ze Huang + */ + +#include +#include +#include +#include +#include +#include + +struct dwc3_spacemit { + struct device *dev; + struct clk *clk; + struct reset_control *reset; +}; + +static int dwc3_spacemit_init(struct dwc3_spacemit *data) +{ + struct device *dev = data->dev; + int ret = 0; + + data->reset = devm_reset_control_get(dev, NULL); + if (IS_ERR(data->reset)) + return dev_err_probe(dev, PTR_ERR(data->reset), "failed to get reset\n"); + + ret = reset_control_assert(data->reset); + if (ret) + return dev_err_probe(dev, ret, "failed to assert reset\n"); + + usleep_range(10, 20); + + ret = reset_control_deassert(data->reset); + if (ret) + return dev_err_probe(dev, ret, "failed to deassert reset\n"); + + return 0; +} + +static int dwc3_spacemit_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *node = dev->of_node; + struct dwc3_spacemit *spacemit; + int ret; + + spacemit = devm_kzalloc(dev, sizeof(*spacemit), GFP_KERNEL); + if (!spacemit) + return -ENOMEM; + + spacemit->dev = dev; + + platform_set_drvdata(pdev, spacemit); + + spacemit->clk = devm_clk_get_enabled(dev, NULL); + if (IS_ERR(spacemit->clk)) + return dev_err_probe(dev, PTR_ERR(spacemit->clk), "Failed to get clock\n"); + + ret = dwc3_spacemit_init(spacemit); + if (ret) + return dev_err_probe(dev, ret, "failed to init SpacemiT USB3 glue\n"); + + ret = of_platform_populate(node, NULL, NULL, dev); + if (ret) + dev_err_probe(dev, ret, "failed to add dwc3 core\n"); + + return 0; +} + +static void dwc3_spacemit_remove(struct platform_device *pdev) +{ + of_platform_depopulate(&pdev->dev); +} + +static const struct of_device_id spacemit_dwc3_match[] = { + { .compatible = "spacemit,k1-dwc3", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, spacemit_dwc3_match); + +#ifdef CONFIG_PM_SLEEP +static int dwc3_spacemit_suspend(struct device *dev) +{ + struct dwc3_spacemit *spacemit = dev_get_drvdata(dev); + + clk_disable_unprepare(spacemit->clk); + + return 0; +} + +static int dwc3_spacemit_resume(struct device *dev) +{ + struct dwc3_spacemit *spacemit = dev_get_drvdata(dev); + int ret; + + ret = clk_prepare_enable(spacemit->clk); + + return ret; +} + +static const struct dev_pm_ops dwc3_spacemit_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(dwc3_spacemit_suspend, dwc3_spacemit_resume) +}; +#endif /* CONFIG_PM_SLEEP */ + +static struct platform_driver dwc3_spacemit_driver = { + .probe = dwc3_spacemit_probe, + .remove = dwc3_spacemit_remove, + .driver = { + .name = "spacemit-dwc3", + .of_match_table = spacemit_dwc3_match, +#ifdef CONFIG_PM_SLEEP + .pm = &dwc3_spacemit_dev_pm_ops, +#endif /* CONFIG_PM_SLEEP */ + }, +}; +module_platform_driver(dwc3_spacemit_driver); + +MODULE_AUTHOR("Wilson "); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("DesignWare USB3 Spacemit Glue Layer");