From patchwork Fri Dec 27 06:02:26 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Chen X-Patchwork-Id: 11310919 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4D0EF139A for ; Fri, 27 Dec 2019 06:05:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2197A206CB for ; Fri, 27 Dec 2019 06:05:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726377AbfL0GFm (ORCPT ); Fri, 27 Dec 2019 01:05:42 -0500 Received: from inva020.nxp.com ([92.121.34.13]:50758 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726038AbfL0GFm (ORCPT ); Fri, 27 Dec 2019 01:05:42 -0500 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id D32F71A0DF4; Fri, 27 Dec 2019 07:05:39 +0100 (CET) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id CE6561A0E00; Fri, 27 Dec 2019 07:05:36 +0100 (CET) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 0FAC2402DA; Fri, 27 Dec 2019 14:05:32 +0800 (SGT) From: Peter Chen To: kishon@ti.com Cc: linux-usb@vger.kernel.org, linux-imx@nxp.com, gregkh@linuxfoundation.org, Peter Chen Subject: [PATCH 1/1] phy: freescale: imx8qm-usb3: add imx8qm USB3 PHY Date: Fri, 27 Dec 2019 14:02:26 +0800 Message-Id: <1577426546-31423-1-git-send-email-peter.chen@nxp.com> X-Mailer: git-send-email 2.7.4 X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org This USB3 PHY is used to support USB3 controller at imx8qm and imx8qxp SoCs. Signed-off-by: Peter Chen --- drivers/phy/freescale/Kconfig | 8 + drivers/phy/freescale/Makefile | 1 + drivers/phy/freescale/phy-fsl-imx8qm-usb3.c | 254 ++++++++++++++++++++ 3 files changed, 263 insertions(+) create mode 100644 drivers/phy/freescale/phy-fsl-imx8qm-usb3.c diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig index 320630ffe3cd..4282f07784f8 100644 --- a/drivers/phy/freescale/Kconfig +++ b/drivers/phy/freescale/Kconfig @@ -14,3 +14,11 @@ config PHY_MIXEL_MIPI_DPHY help Enable this to add support for the Mixel DSI PHY as found on NXP's i.MX8 family of SOCs. + +config PHY_FSL_IMX8QM_USB + tristate "Freescale i.MX8QM USB3 PHY" + depends on OF && ARCH_MXC + select GENERIC_PHY + help + Enable this to add support for the USB3 PHY as found + on NXP's i.MX8QM family of SOCs. diff --git a/drivers/phy/freescale/Makefile b/drivers/phy/freescale/Makefile index 1d02e3869b45..dcab710fb90d 100644 --- a/drivers/phy/freescale/Makefile +++ b/drivers/phy/freescale/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only obj-$(CONFIG_PHY_FSL_IMX8MQ_USB) += phy-fsl-imx8mq-usb.o obj-$(CONFIG_PHY_MIXEL_MIPI_DPHY) += phy-fsl-imx8-mipi-dphy.o +obj-$(CONFIG_PHY_FSL_IMX8QM_USB) += phy-fsl-imx8qm-usb3.o diff --git a/drivers/phy/freescale/phy-fsl-imx8qm-usb3.c b/drivers/phy/freescale/phy-fsl-imx8qm-usb3.c new file mode 100644 index 000000000000..19ab6aa3271b --- /dev/null +++ b/drivers/phy/freescale/phy-fsl-imx8qm-usb3.c @@ -0,0 +1,254 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Copyright (c) 2019 NXP. */ + +#include +#include +#include +#include +#include +#include + +/* PHY register definition */ +#define PHY_PMA_CMN_CTRL1 (0xC800 * 4) +#define TB_ADDR_CMN_DIAG_HSCLK_SEL (0x01e0 * 4) +#define TB_ADDR_CMN_PLL0_VCOCAL_INIT_TMR (0x0084 * 4) +#define TB_ADDR_CMN_PLL0_VCOCAL_ITER_TMR (0x0085 * 4) +#define TB_ADDR_CMN_PLL0_INTDIV (0x0094 * 4) +#define TB_ADDR_CMN_PLL0_FRACDIV (0x0095 * 4) +#define TB_ADDR_CMN_PLL0_HIGH_THR (0x0096 * 4) +#define TB_ADDR_CMN_PLL0_SS_CTRL1 (0x0098 * 4) +#define TB_ADDR_CMN_PLL0_SS_CTRL2 (0x0099 * 4) +#define TB_ADDR_CMN_PLL0_DSM_DIAG (0x0097 * 4) +#define TB_ADDR_CMN_DIAG_PLL0_OVRD (0x01c2 * 4) +#define TB_ADDR_CMN_DIAG_PLL0_FBH_OVRD (0x01c0 * 4) +#define TB_ADDR_CMN_DIAG_PLL0_FBL_OVRD (0x01c1 * 4) +#define TB_ADDR_CMN_DIAG_PLL0_V2I_TUNE (0x01C5 * 4) +#define TB_ADDR_CMN_DIAG_PLL0_CP_TUNE (0x01C6 * 4) +#define TB_ADDR_CMN_DIAG_PLL0_LF_PROG (0x01C7 * 4) +#define TB_ADDR_CMN_DIAG_PLL0_TEST_MODE (0x01c4 * 4) +#define TB_ADDR_CMN_PSM_CLK_CTRL (0x0061 * 4) +#define TB_ADDR_XCVR_DIAG_RX_LANE_CAL_RST_TMR (0x40ea * 4) +#define TB_ADDR_XCVR_PSM_RCTRL (0x4001 * 4) +#define TB_ADDR_TX_PSC_A0 (0x4100 * 4) +#define TB_ADDR_TX_PSC_A1 (0x4101 * 4) +#define TB_ADDR_TX_PSC_A2 (0x4102 * 4) +#define TB_ADDR_TX_PSC_A3 (0x4103 * 4) +#define TB_ADDR_TX_DIAG_ECTRL_OVRD (0x41f5 * 4) +#define TB_ADDR_TX_PSC_CAL (0x4106 * 4) +#define TB_ADDR_TX_PSC_RDY (0x4107 * 4) +#define TB_ADDR_RX_PSC_A0 (0x8000 * 4) +#define TB_ADDR_RX_PSC_A1 (0x8001 * 4) +#define TB_ADDR_RX_PSC_A2 (0x8002 * 4) +#define TB_ADDR_RX_PSC_A3 (0x8003 * 4) +#define TB_ADDR_RX_PSC_CAL (0x8006 * 4) +#define TB_ADDR_RX_PSC_RDY (0x8007 * 4) +#define TB_ADDR_TX_TXCC_MGNLS_MULT_000 (0x4058 * 4) +#define TB_ADDR_TX_DIAG_BGREF_PREDRV_DELAY (0x41e7 * 4) +#define TB_ADDR_RX_SLC_CU_ITER_TMR (0x80e3 * 4) +#define TB_ADDR_RX_SIGDET_HL_FILT_TMR (0x8090 * 4) +#define TB_ADDR_RX_SAMP_DAC_CTRL (0x8058 * 4) +#define TB_ADDR_RX_DIAG_SIGDET_TUNE (0x81dc * 4) +#define TB_ADDR_RX_DIAG_LFPSDET_TUNE2 (0x81df * 4) +#define TB_ADDR_RX_DIAG_BS_TM (0x81f5 * 4) +#define TB_ADDR_RX_DIAG_DFE_CTRL1 (0x81d3 * 4) +#define TB_ADDR_RX_DIAG_ILL_IQE_TRIM4 (0x81c7 * 4) +#define TB_ADDR_RX_DIAG_ILL_E_TRIM0 (0x81c2 * 4) +#define TB_ADDR_RX_DIAG_ILL_IQ_TRIM0 (0x81c1 * 4) +#define TB_ADDR_RX_DIAG_ILL_IQE_TRIM6 (0x81c9 * 4) +#define TB_ADDR_RX_DIAG_RXFE_TM3 (0x81f8 * 4) +#define TB_ADDR_RX_DIAG_RXFE_TM4 (0x81f9 * 4) +#define TB_ADDR_RX_DIAG_LFPSDET_TUNE (0x81dd * 4) +#define TB_ADDR_RX_DIAG_DFE_CTRL3 (0x81d5 * 4) +#define TB_ADDR_RX_DIAG_SC2C_DELAY (0x81e1 * 4) +#define TB_ADDR_RX_REE_VGA_GAIN_NODFE (0x81bf * 4) +#define TB_ADDR_XCVR_PSM_CAL_TMR (0x4002 * 4) +#define TB_ADDR_XCVR_PSM_A0BYP_TMR (0x4004 * 4) +#define TB_ADDR_XCVR_PSM_A0IN_TMR (0x4003 * 4) +#define TB_ADDR_XCVR_PSM_A1IN_TMR (0x4005 * 4) +#define TB_ADDR_XCVR_PSM_A2IN_TMR (0x4006 * 4) +#define TB_ADDR_XCVR_PSM_A3IN_TMR (0x4007 * 4) +#define TB_ADDR_XCVR_PSM_A4IN_TMR (0x4008 * 4) +#define TB_ADDR_XCVR_PSM_A5IN_TMR (0x4009 * 4) +#define TB_ADDR_XCVR_PSM_A0OUT_TMR (0x400a * 4) +#define TB_ADDR_XCVR_PSM_A1OUT_TMR (0x400b * 4) +#define TB_ADDR_XCVR_PSM_A2OUT_TMR (0x400c * 4) +#define TB_ADDR_XCVR_PSM_A3OUT_TMR (0x400d * 4) +#define TB_ADDR_XCVR_PSM_A4OUT_TMR (0x400e * 4) +#define TB_ADDR_XCVR_PSM_A5OUT_TMR (0x400f * 4) +#define TB_ADDR_TX_RCVDET_EN_TMR (0x4122 * 4) +#define TB_ADDR_TX_RCVDET_ST_TMR (0x4123 * 4) +#define TB_ADDR_XCVR_DIAG_LANE_FCM_EN_MGN_TMR (0x40f2 * 4) +#define TB_ADDR_TX_RCVDETSC_CTRL (0x4124 * 4) + +/* TB_ADDR_TX_RCVDETSC_CTRL */ +#define RXDET_IN_P3_32KHZ (1 << 0) + +struct imx8qm_usb_phy { + struct phy *phy; + struct clk *clk; + void __iomem *base; +}; + +static int imx8qm_phy_power_on(struct phy *phy) +{ + struct imx8qm_usb_phy *imx_phy = phy_get_drvdata(phy); + int ret; + u32 value; + void __iomem *regs = imx_phy->base; + + ret = clk_prepare_enable(imx_phy->clk); + if (ret) + return ret; + + /* Below bringup sequence is from PHY's User Guide */ + writel(0x0830, regs + PHY_PMA_CMN_CTRL1); + writel(0x10, regs + TB_ADDR_CMN_DIAG_HSCLK_SEL); + writel(0x00F0, regs + TB_ADDR_CMN_PLL0_VCOCAL_INIT_TMR); + writel(0x0018, regs + TB_ADDR_CMN_PLL0_VCOCAL_ITER_TMR); + writel(0x00D0, regs + TB_ADDR_CMN_PLL0_INTDIV); + writel(0x4aaa, regs + TB_ADDR_CMN_PLL0_FRACDIV); + writel(0x0034, regs + TB_ADDR_CMN_PLL0_HIGH_THR); + writel(0x1ee, regs + TB_ADDR_CMN_PLL0_SS_CTRL1); + writel(0x7F03, regs + TB_ADDR_CMN_PLL0_SS_CTRL2); + writel(0x0020, regs + TB_ADDR_CMN_PLL0_DSM_DIAG); + writel(0x0000, regs + TB_ADDR_CMN_DIAG_PLL0_OVRD); + writel(0x0000, regs + TB_ADDR_CMN_DIAG_PLL0_FBH_OVRD); + writel(0x0000, regs + TB_ADDR_CMN_DIAG_PLL0_FBL_OVRD); + writel(0x0007, regs + TB_ADDR_CMN_DIAG_PLL0_V2I_TUNE); + writel(0x0027, regs + TB_ADDR_CMN_DIAG_PLL0_CP_TUNE); + writel(0x0008, regs + TB_ADDR_CMN_DIAG_PLL0_LF_PROG); + writel(0x0022, regs + TB_ADDR_CMN_DIAG_PLL0_TEST_MODE); + writel(0x000a, regs + TB_ADDR_CMN_PSM_CLK_CTRL); + writel(0x139, regs + TB_ADDR_XCVR_DIAG_RX_LANE_CAL_RST_TMR); + writel(0xbefc, regs + TB_ADDR_XCVR_PSM_RCTRL); + + writel(0x7799, regs + TB_ADDR_TX_PSC_A0); + writel(0x7798, regs + TB_ADDR_TX_PSC_A1); + writel(0x509b, regs + TB_ADDR_TX_PSC_A2); + writel(0x3, regs + TB_ADDR_TX_DIAG_ECTRL_OVRD); + writel(0x509b, regs + TB_ADDR_TX_PSC_A3); + writel(0x2090, regs + TB_ADDR_TX_PSC_CAL); + writel(0x2090, regs + TB_ADDR_TX_PSC_RDY); + + writel(0xA6FD, regs + TB_ADDR_RX_PSC_A0); + writel(0xA6FD, regs + TB_ADDR_RX_PSC_A1); + writel(0xA410, regs + TB_ADDR_RX_PSC_A2); + writel(0x2410, regs + TB_ADDR_RX_PSC_A3); + + writel(0x23FF, regs + TB_ADDR_RX_PSC_CAL); + writel(0x2010, regs + TB_ADDR_RX_PSC_RDY); + + writel(0x0020, regs + TB_ADDR_TX_TXCC_MGNLS_MULT_000); + writel(0x00ff, regs + TB_ADDR_TX_DIAG_BGREF_PREDRV_DELAY); + writel(0x0002, regs + TB_ADDR_RX_SLC_CU_ITER_TMR); + writel(0x0013, regs + TB_ADDR_RX_SIGDET_HL_FILT_TMR); + writel(0x0000, regs + TB_ADDR_RX_SAMP_DAC_CTRL); + writel(0x1004, regs + TB_ADDR_RX_DIAG_SIGDET_TUNE); + writel(0x4041, regs + TB_ADDR_RX_DIAG_LFPSDET_TUNE2); + writel(0x0480, regs + TB_ADDR_RX_DIAG_BS_TM); + writel(0x8006, regs + TB_ADDR_RX_DIAG_DFE_CTRL1); + writel(0x003f, regs + TB_ADDR_RX_DIAG_ILL_IQE_TRIM4); + writel(0x543f, regs + TB_ADDR_RX_DIAG_ILL_E_TRIM0); + writel(0x543f, regs + TB_ADDR_RX_DIAG_ILL_IQ_TRIM0); + writel(0x0000, regs + TB_ADDR_RX_DIAG_ILL_IQE_TRIM6); + writel(0x8000, regs + TB_ADDR_RX_DIAG_RXFE_TM3); + writel(0x0003, regs + TB_ADDR_RX_DIAG_RXFE_TM4); + writel(0x2408, regs + TB_ADDR_RX_DIAG_LFPSDET_TUNE); + writel(0x05ca, regs + TB_ADDR_RX_DIAG_DFE_CTRL3); + writel(0x0258, regs + TB_ADDR_RX_DIAG_SC2C_DELAY); + writel(0x1fff, regs + TB_ADDR_RX_REE_VGA_GAIN_NODFE); + + writel(0x02c6, regs + TB_ADDR_XCVR_PSM_CAL_TMR); + writel(0x0002, regs + TB_ADDR_XCVR_PSM_A0BYP_TMR); + writel(0x02c6, regs + TB_ADDR_XCVR_PSM_A0IN_TMR); + writel(0x0010, regs + TB_ADDR_XCVR_PSM_A1IN_TMR); + writel(0x0010, regs + TB_ADDR_XCVR_PSM_A2IN_TMR); + writel(0x0010, regs + TB_ADDR_XCVR_PSM_A3IN_TMR); + writel(0x0010, regs + TB_ADDR_XCVR_PSM_A4IN_TMR); + writel(0x0010, regs + TB_ADDR_XCVR_PSM_A5IN_TMR); + + writel(0x0002, regs + TB_ADDR_XCVR_PSM_A0OUT_TMR); + writel(0x0002, regs + TB_ADDR_XCVR_PSM_A1OUT_TMR); + writel(0x0002, regs + TB_ADDR_XCVR_PSM_A2OUT_TMR); + writel(0x0002, regs + TB_ADDR_XCVR_PSM_A3OUT_TMR); + writel(0x0002, regs + TB_ADDR_XCVR_PSM_A4OUT_TMR); + writel(0x0002, regs + TB_ADDR_XCVR_PSM_A5OUT_TMR); + + /* Change rx detect parameter */ + writel(0x960, regs + TB_ADDR_TX_RCVDET_EN_TMR); + writel(0x01e0, regs + TB_ADDR_TX_RCVDET_ST_TMR); + writel(0x0090, regs + TB_ADDR_XCVR_DIAG_LANE_FCM_EN_MGN_TMR); + + /* RXDET_IN_P3_32KHZ, Receiver detect slow clock enable */ + value = readl(regs + TB_ADDR_TX_RCVDETSC_CTRL); + value |= RXDET_IN_P3_32KHZ; + writel(value, regs + TB_ADDR_TX_RCVDETSC_CTRL); + + udelay(10); + + return 0; +} + +static int imx8qm_phy_power_off(struct phy *phy) +{ + struct imx8qm_usb_phy *imx_phy = phy_get_drvdata(phy); + + clk_disable_unprepare(imx_phy->clk); + + return 0; +} + +static struct phy_ops imx8qm_usb_phy_ops = { + .power_on = imx8qm_phy_power_on, + .power_off = imx8qm_phy_power_off, + .owner = THIS_MODULE, +}; + +static int imx8qm_usb_phy_probe(struct platform_device *pdev) +{ + struct phy_provider *phy_provider; + struct device *dev = &pdev->dev; + struct imx8qm_usb_phy *imx_phy; + struct resource *res; + + imx_phy = devm_kzalloc(dev, sizeof(*imx_phy), GFP_KERNEL); + if (!imx_phy) + return -ENOMEM; + + imx_phy->clk = devm_clk_get(dev, "usb3_phy_clk"); + if (IS_ERR(imx_phy->clk)) + return PTR_ERR(imx_phy->clk); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + imx_phy->base = devm_ioremap_resource(dev, res); + if (IS_ERR(imx_phy->base)) + return PTR_ERR(imx_phy->base); + + imx_phy->phy = devm_phy_create(dev, NULL, &imx8qm_usb_phy_ops); + if (IS_ERR(imx_phy->phy)) + return PTR_ERR(imx_phy->phy); + + phy_set_drvdata(imx_phy->phy, imx_phy); + + 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 imx8qm_usb_phy_of_match[] = { + {.compatible = "fsl,imx8qm-usb-phy",}, + { }, +}; +MODULE_DEVICE_TABLE(of, imx8qm_usb_phy_of_match); + +static struct platform_driver imx8qm_usb_phy_driver = { + .probe = imx8qm_usb_phy_probe, + .driver = { + .name = "imx8qm-usb-phy", + .of_match_table = imx8qm_usb_phy_of_match, + } +}; +module_platform_driver(imx8qm_usb_phy_driver); + +MODULE_AUTHOR("Peter Chen "); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("NXP i.MX8QM USB3 PHY Driver");