From patchwork Fri Jul 31 13:03:54 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Q2h1bmZlbmcgWXVuICjkupHmmKXls7Ap?= X-Patchwork-Id: 6911351 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 643FDC05AD for ; Fri, 31 Jul 2015 13:07:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E4BAA2061E for ; Fri, 31 Jul 2015 13:07:48 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6C6D020618 for ; Fri, 31 Jul 2015 13:07:47 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZLA0a-0006T1-Kp; Fri, 31 Jul 2015 13:05:56 +0000 Received: from [210.61.82.183] (helo=mailgw01.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZL9zB-0004Vu-Jd; Fri, 31 Jul 2015 13:04:33 +0000 X-Listener-Flag: 11101 Received: from mtkhts09.mediatek.inc [(172.21.101.70)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 135083311; Fri, 31 Jul 2015 21:04:06 +0800 Received: from mhfsdcap03.mhfswrd (10.17.3.153) by mtkhts09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.181.6; Fri, 31 Jul 2015 21:04:04 +0800 From: Chunfeng Yun To: Mathias Nyman Subject: [PATCH v4 3/5] usb: phy: add usb3.0 phy driver for mt65xx SoCs Date: Fri, 31 Jul 2015 21:03:54 +0800 Message-ID: <1438347836-29060-4-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1438347836-29060-1-git-send-email-chunfeng.yun@mediatek.com> References: <1438347836-29060-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150731_060430_491062_8D894E43 X-CRM114-Status: GOOD ( 24.45 ) X-Spam-Score: -1.1 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Sergei Shtylyov , Sascha Hauer , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Felipe Balbi , Kishon Vijay Abraham I , Chunfeng Yun , Rob Herring , linux-mediatek@lists.infradead.org, Daniel Kurtz , Matthias Brugger , John Crispin , linux-arm-kernel@lists.infradead.org, Roger Quadros Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP support usb3.0 phy of mt65xx SoCs Signed-off-by: Chunfeng Yun --- drivers/phy/Kconfig | 9 + drivers/phy/Makefile | 1 + drivers/phy/phy-mt65xx-usb3.c | 419 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 429 insertions(+) create mode 100644 drivers/phy/phy-mt65xx-usb3.c diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index c0e6ede..019cf8b 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -193,6 +193,15 @@ config PHY_HIX5HD2_SATA help Support for SATA PHY on Hisilicon hix5hd2 Soc. +config PHY_MT65XX_USB3 + tristate "Mediatek USB3.0 PHY Driver" + depends on ARCH_MEDIATEK && OF + select GENERIC_PHY + help + Say 'Y' here to add support for Mediatek USB3.0 PHY driver + for mt65xx SoCs. it supports two usb2.0 ports and + one usb3.0 port. + config PHY_SUN4I_USB tristate "Allwinner sunxi SoC USB PHY driver" depends on ARCH_SUNXI && HAS_IOMEM && OF diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index f344e1b..3ceff2a 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -22,6 +22,7 @@ obj-$(CONFIG_TI_PIPE3) += phy-ti-pipe3.o obj-$(CONFIG_TWL4030_USB) += phy-twl4030-usb.o obj-$(CONFIG_PHY_EXYNOS5250_SATA) += phy-exynos5250-sata.o obj-$(CONFIG_PHY_HIX5HD2_SATA) += phy-hix5hd2-sata.o +obj-$(CONFIG_PHY_MT65XX_USB3) += phy-mt65xx-usb3.o obj-$(CONFIG_PHY_SUN4I_USB) += phy-sun4i-usb.o obj-$(CONFIG_PHY_SUN9I_USB) += phy-sun9i-usb.o obj-$(CONFIG_PHY_SAMSUNG_USB2) += phy-exynos-usb2.o diff --git a/drivers/phy/phy-mt65xx-usb3.c b/drivers/phy/phy-mt65xx-usb3.c new file mode 100644 index 0000000..1d2f2e0 --- /dev/null +++ b/drivers/phy/phy-mt65xx-usb3.c @@ -0,0 +1,419 @@ +/* + * Copyright (c) 2015 MediaTek Inc. + * Author: Chunfeng.Yun + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include +#include +#include +#include +#include +#include + +/* + * for sifslv2 register + * relative to USB3_SIF2_BASE base address + */ +#define SSUSB_SIFSLV_SPLLC 0x0000 +#define SSUSB_SIFSLV_U2PHY_COM_BASE 0x0800 +#define SSUSB_SIFSLV_U3PHYD_BASE 0x0900 +#define SSUSB_USB30_PHYA_SIV_B_BASE 0x0b00 +#define SSUSB_SIFSLV_U3PHYA_DA_BASE 0x0c00 + +/*port1 refs. +0x800(refer to port0)*/ +#define U3P_PORT_INTERVAL 0x800 /*based on port0 */ +#define U3P_PHY_DELTA(index) ((U3P_PORT_INTERVAL) * (index)) + +#define U3P_USBPHYACR0 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0000) +#define PA0_RG_U2PLL_FORCE_ON BIT(15) + +#define U3P_USBPHYACR2 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0008) +#define PA2_RG_SIF_U2PLL_FORCE_EN BIT(18) + +#define U3P_USBPHYACR5 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0014) +#define PA5_RG_U2_HSTX_SRCTRL (0x7 << 12) +#define PA5_RG_U2_HSTX_SRCTRL_VAL(x) ((0x7 & (x)) << 12) +#define PA5_RG_U2_HS_100U_U3_EN BIT(11) + +#define U3P_USBPHYACR6 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0018) +#define PA6_RG_U2_ISO_EN BIT(31) +#define PA6_RG_U2_BC11_SW_EN BIT(23) +#define PA6_RG_U2_OTG_VBUSCMP_EN BIT(20) + +#define U3P_U2PHYACR4 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0020) +#define P2C_RG_USB20_GPIO_CTL BIT(9) +#define P2C_USB20_GPIO_MODE BIT(8) +#define P2C_U2_GPIO_CTR_MSK (P2C_RG_USB20_GPIO_CTL | P2C_USB20_GPIO_MODE) + +#define U3D_U2PHYDCR0 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0060) +#define P2C_RG_SIF_U2PLL_FORCE_ON BIT(24) + +#define U3P_U2PHYDTM0 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0068) +#define P2C_FORCE_UART_EN BIT(26) +#define P2C_FORCE_DATAIN BIT(23) +#define P2C_FORCE_DM_PULLDOWN BIT(21) +#define P2C_FORCE_DP_PULLDOWN BIT(20) +#define P2C_FORCE_XCVRSEL BIT(19) +#define P2C_FORCE_SUSPENDM BIT(18) +#define P2C_FORCE_TERMSEL BIT(17) +#define P2C_RG_DATAIN (0xf << 10) +#define P2C_RG_DATAIN_VAL(x) ((0xf & (x)) << 10) +#define P2C_RG_DMPULLDOWN BIT(7) +#define P2C_RG_DPPULLDOWN BIT(6) +#define P2C_RG_XCVRSEL (0x3 << 4) +#define P2C_RG_XCVRSEL_VAL(x) ((0x3 & (x)) << 4) +#define P2C_RG_SUSPENDM BIT(3) +#define P2C_RG_TERMSEL BIT(2) +#define P2C_DTM0_PART_MASK \ + (P2C_FORCE_DATAIN | P2C_FORCE_DM_PULLDOWN | \ + P2C_FORCE_DP_PULLDOWN | P2C_FORCE_XCVRSEL | \ + P2C_FORCE_TERMSEL | P2C_RG_DMPULLDOWN | \ + P2C_RG_DPPULLDOWN | P2C_RG_TERMSEL) + +#define U3P_U2PHYDTM1 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x006C) +#define P2C_RG_UART_EN BIT(16) +#define P2C_RG_VBUSVALID BIT(5) +#define P2C_RG_SESSEND BIT(4) +#define P2C_RG_AVALID BIT(2) + +#define U3P_U3_PHYA_REG0 (SSUSB_USB30_PHYA_SIV_B_BASE + 0x0000) +#define P3A_RG_U3_VUSB10_ON BIT(5) + +#define U3P_U3_PHYA_REG6 (SSUSB_USB30_PHYA_SIV_B_BASE + 0x0018) +#define P3A_RG_TX_EIDLE_CM (0xf << 28) +#define P3A_RG_TX_EIDLE_CM_VAL(x) ((0xf & (x)) << 28) + +#define U3P_U3_PHYA_REG9 (SSUSB_USB30_PHYA_SIV_B_BASE + 0x0024) +#define P3A_RG_RX_DAC_MUX (0x1f << 1) +#define P3A_RG_RX_DAC_MUX_VAL(x) ((0x1f & (x)) << 1) + +#define U3P_U3PHYA_DA_REG0 (SSUSB_SIFSLV_U3PHYA_DA_BASE + 0x0) +#define P3A_RG_XTAL_EXT_EN_U3 (0x3 << 10) +#define P3A_RG_XTAL_EXT_EN_U3_VAL(x) ((0x3 & (x)) << 10) + +#define U3P_PHYD_CDR1 (SSUSB_SIFSLV_U3PHYD_BASE + 0x5c) +#define P3D_RG_CDR_BIR_LTD1 (0x1f << 24) +#define P3D_RG_CDR_BIR_LTD1_VAL(x) ((0x1f & (x)) << 24) +#define P3D_RG_CDR_BIR_LTD0 (0x1f << 8) +#define P3D_RG_CDR_BIR_LTD0_VAL(x) ((0x1f & (x)) << 8) + +#define U3P_XTALCTL3 (SSUSB_SIFSLV_SPLLC + 0x18) +#define XC3_RG_U3_XTAL_RX_PWD BIT(9) +#define XC3_RG_U3_FRC_XTAL_RX_PWD BIT(8) + +#define MT65XX_MAX_PHYS 2 + +struct mt65xx_phy_instance { + struct phy *phy; + u32 index; + u32 delta; /* increament refers to port0 */ +}; + +struct mt65xx_u3phy { + struct device *dev; + void __iomem *sif_base; /* include sif2 */ + struct clk *u3phya_ref; /* reference clock of usb3 anolog phy */ + struct mt65xx_phy_instance phys[MT65XX_MAX_PHYS]; +}; + +static struct mt65xx_u3phy *to_usbdrd_phy( + struct mt65xx_phy_instance *instance) +{ + return container_of((instance), struct mt65xx_u3phy, + phys[(instance)->index]); +} + +static void phy_instance_init(struct mt65xx_phy_instance *instance) +{ + struct mt65xx_u3phy *u3phy = to_usbdrd_phy(instance); + void __iomem *sif_base = u3phy->sif_base + instance->delta; + u32 index = instance->index; + u32 tmp; + + /* switch to USB function. (system register, force ip into usb mode) */ + tmp = readl(sif_base + U3P_U2PHYDTM0); + tmp &= ~P2C_FORCE_UART_EN; + writel(tmp, sif_base + U3P_U2PHYDTM0); + + tmp = readl(sif_base + U3P_U2PHYDTM1); + tmp &= ~P2C_RG_UART_EN; + writel(tmp, sif_base + U3P_U2PHYDTM1); + + if (!index) { + tmp = readl(sif_base + U3P_U2PHYACR4); + tmp &= ~P2C_U2_GPIO_CTR_MSK; + writel(tmp, sif_base + U3P_U2PHYACR4); + } + + /* DP/DM BC1.1 path Disable */ + tmp = readl(sif_base + U3P_USBPHYACR6); + tmp &= ~PA6_RG_U2_BC11_SW_EN; + writel(tmp, sif_base + U3P_USBPHYACR6); + + tmp = readl(sif_base + U3P_U3PHYA_DA_REG0); + tmp &= ~P3A_RG_XTAL_EXT_EN_U3; + tmp |= P3A_RG_XTAL_EXT_EN_U3_VAL(2); + writel(tmp, sif_base + U3P_U3PHYA_DA_REG0); + + tmp = readl(sif_base + U3P_U3_PHYA_REG9); + tmp &= ~P3A_RG_RX_DAC_MUX; + tmp |= P3A_RG_RX_DAC_MUX_VAL(4); + writel(tmp, sif_base + U3P_U3_PHYA_REG9); + + tmp = readl(sif_base + U3P_U3_PHYA_REG6); + tmp &= ~P3A_RG_TX_EIDLE_CM; + tmp |= P3A_RG_TX_EIDLE_CM_VAL(0xe); + writel(tmp, sif_base + U3P_U3_PHYA_REG6); + + tmp = readl(sif_base + U3P_PHYD_CDR1); + tmp &= ~(P3D_RG_CDR_BIR_LTD0 | P3D_RG_CDR_BIR_LTD1); + tmp |= P3D_RG_CDR_BIR_LTD0_VAL(0xc) | P3D_RG_CDR_BIR_LTD1_VAL(0x3); + writel(tmp, sif_base + U3P_PHYD_CDR1); + + dev_dbg(u3phy->dev, "%s(%d)\n", __func__, index); +} + +static void phy_instance_power_on(struct mt65xx_phy_instance *instance) +{ + struct mt65xx_u3phy *u3phy = to_usbdrd_phy(instance); + void __iomem *sif_base = u3phy->sif_base + instance->delta; + u32 index = instance->index; + u32 tmp; + + if (!index) { + /* Set RG_SSUSB_VUSB10_ON as 1 after VUSB10 ready */ + tmp = readl(sif_base + U3P_U3_PHYA_REG0); + tmp |= P3A_RG_U3_VUSB10_ON; + writel(tmp, sif_base + U3P_U3_PHYA_REG0); + } + + /* (force_suspendm=0) (let suspendm=1, enable usb 480MHz pll) */ + tmp = readl(sif_base + U3P_U2PHYDTM0); + tmp &= ~(P2C_FORCE_SUSPENDM | P2C_RG_XCVRSEL); + tmp &= ~(P2C_RG_DATAIN | P2C_DTM0_PART_MASK); + writel(tmp, sif_base + U3P_U2PHYDTM0); + + /* OTG Enable */ + tmp = readl(sif_base + U3P_USBPHYACR6); + tmp |= PA6_RG_U2_OTG_VBUSCMP_EN; + writel(tmp, sif_base + U3P_USBPHYACR6); + + if (!index) { + tmp = readl(sif_base + U3P_XTALCTL3); + tmp |= XC3_RG_U3_XTAL_RX_PWD | XC3_RG_U3_FRC_XTAL_RX_PWD; + writel(tmp, sif_base + U3P_XTALCTL3); + /* [mt8173]disable Change 100uA current from SSUSB */ + tmp = readl(sif_base + U3P_USBPHYACR5); + tmp &= ~PA5_RG_U2_HS_100U_U3_EN; + writel(tmp, sif_base + U3P_USBPHYACR5); + } + udelay(800); + + tmp = readl(sif_base + U3P_U2PHYDTM1); + tmp |= P2C_RG_VBUSVALID | P2C_RG_AVALID; + tmp &= ~P2C_RG_SESSEND; + writel(tmp, sif_base + U3P_U2PHYDTM1); + /* USB 2.0 slew rate calibration */ + tmp = readl(sif_base + U3P_USBPHYACR5); + tmp &= ~PA5_RG_U2_HSTX_SRCTRL; + tmp |= PA5_RG_U2_HSTX_SRCTRL_VAL(4); + writel(tmp, sif_base + U3P_USBPHYACR5); + + dev_dbg(u3phy->dev, "%s(%d)(delta: 0x%x)\n", __func__, + index, u3phy->phys[index].delta); +} + +static void phy_instance_power_off(struct mt65xx_phy_instance *instance) +{ + struct mt65xx_u3phy *u3phy = to_usbdrd_phy(instance); + void __iomem *sif_base = u3phy->sif_base + instance->delta; + u32 index = instance->index; + u32 tmp; + + tmp = readl(sif_base + U3P_U2PHYDTM0); + tmp &= ~(P2C_RG_XCVRSEL | P2C_RG_DATAIN); + tmp |= P2C_RG_XCVRSEL_VAL(1) | P2C_RG_DATAIN_VAL(0); + tmp |= P2C_FORCE_SUSPENDM; + writel(tmp, sif_base + U3P_U2PHYDTM0); + + /* OTG Disable */ + tmp = readl(sif_base + U3P_USBPHYACR6); + tmp &= ~PA6_RG_U2_OTG_VBUSCMP_EN; + writel(tmp, sif_base + U3P_USBPHYACR6); + if (!index) { + /* (also disable)Change 100uA current switch to USB2.0 */ + tmp = readl(sif_base + U3P_USBPHYACR5); + tmp &= ~PA5_RG_U2_HS_100U_U3_EN; + writel(tmp, sif_base + U3P_USBPHYACR5); + } + udelay(800); + + /* let suspendm=0, set utmi into analog power down */ + tmp = readl(sif_base + U3P_U2PHYDTM0); + tmp &= ~P2C_RG_SUSPENDM; + writel(tmp, sif_base + U3P_U2PHYDTM0); + udelay(1); + + tmp = readl(sif_base + U3P_U2PHYDTM1); + tmp &= ~(P2C_RG_VBUSVALID | P2C_RG_AVALID); + tmp |= P2C_RG_SESSEND; + writel(tmp, sif_base + U3P_U2PHYDTM1); + + if (!index) { + tmp = readl(sif_base + U3P_U3_PHYA_REG0); + tmp &= ~P3A_RG_U3_VUSB10_ON; + writel(tmp, sif_base + U3P_U3_PHYA_REG0); + } + + dev_dbg(u3phy->dev, "%s(%d)\n", __func__, index); +} + +static int u3phy_clk_enable(struct mt65xx_u3phy *u3phy) +{ + int ret; + + ret = clk_prepare_enable(u3phy->u3phya_ref); + if (ret) { + dev_err(u3phy->dev, "failed to enable u3phya_ref\n"); + return ret; + } + udelay(100); + + return 0; +} + +static int mt65xx_phy_init(struct phy *phy) +{ + struct mt65xx_phy_instance *instance = phy_get_drvdata(phy); + + phy_instance_init(instance); + return 0; +} + +static int mt65xx_phy_power_on(struct phy *phy) +{ + struct mt65xx_phy_instance *instance = phy_get_drvdata(phy); + + phy_instance_power_on(instance); + msleep(20); + return 0; +} + +static int mt65xx_phy_power_off(struct phy *phy) +{ + struct mt65xx_phy_instance *instance = phy_get_drvdata(phy); + + phy_instance_power_off(instance); + return 0; +} + +static struct phy *mt65xx_phy_xlate(struct device *dev, + struct of_phandle_args *args) +{ + struct mt65xx_u3phy *u3phy = dev_get_drvdata(dev); + + if (WARN_ON(args->args[0] > MT65XX_MAX_PHYS)) + return ERR_PTR(-ENODEV); + + return u3phy->phys[args->args[0]].phy; +} + +static struct phy_ops mt65xx_u3phy_ops = { + .init = mt65xx_phy_init, + .power_on = mt65xx_phy_power_on, + .power_off = mt65xx_phy_power_off, + .owner = THIS_MODULE, +}; + +static const struct of_device_id mt65xx_u3phy_id_table[] = { + { .compatible = "mediatek,mt8173-u3phy",}, + { }, +}; +MODULE_DEVICE_TABLE(of, mt65xx_u3phy_id_table); + + +static int mt65xx_u3phy_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct phy_provider *phy_provider; + struct resource *sif_res; + struct mt65xx_u3phy *u3phy; + int i; + + u3phy = devm_kzalloc(dev, sizeof(*u3phy), GFP_KERNEL); + if (!u3phy) + return -ENOMEM; + + u3phy->dev = dev; + platform_set_drvdata(pdev, u3phy); + + sif_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + u3phy->sif_base = devm_ioremap_resource(dev, sif_res); + if (IS_ERR(u3phy->sif_base)) { + dev_err(dev, "failed to remap sif regs\n"); + return PTR_ERR(u3phy->sif_base); + } + + u3phy->u3phya_ref = devm_clk_get(dev, "u3phya_ref"); + if (IS_ERR(u3phy->u3phya_ref)) { + dev_err(dev, "error to get u3phya_ref\n"); + return PTR_ERR(u3phy->u3phya_ref); + } + + for (i = 0; i < MT65XX_MAX_PHYS; i++) { + struct mt65xx_phy_instance *instance; + struct phy *phy; + + phy = devm_phy_create(dev, NULL, &mt65xx_u3phy_ops); + if (IS_ERR(phy)) { + dev_err(dev, "failed to create mt65xx_u3phy phy\n"); + return PTR_ERR(phy); + } + instance = &u3phy->phys[i]; + instance->phy = phy; + instance->index = i; + instance->delta = U3P_PHY_DELTA(i); + phy_set_drvdata(phy, instance); + } + + phy_provider = devm_of_phy_provider_register(dev, mt65xx_phy_xlate); + if (IS_ERR(phy_provider)) { + dev_err(dev, "Failed to register phy provider\n"); + return PTR_ERR(phy_provider); + } + + return u3phy_clk_enable(u3phy); +} + +static int mt65xx_u3phy_remove(struct platform_device *pdev) +{ + struct mt65xx_u3phy *u3phy = platform_get_drvdata(pdev); + + clk_disable_unprepare(u3phy->u3phya_ref); + + return 0; +} + +static struct platform_driver mt65xx_u3phy_driver = { + .probe = mt65xx_u3phy_probe, + .remove = mt65xx_u3phy_remove, + .driver = { + .name = "mt65xx-u3phy", + .of_match_table = mt65xx_u3phy_id_table, + }, +}; + +module_platform_driver(mt65xx_u3phy_driver); + +MODULE_DESCRIPTION("Mt65xx USB PHY driver"); +MODULE_LICENSE("GPL v2");