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u-boot/drivers/usb/host/ehci-mx6.c
Adam Ford 078dfef931 usb: ehci-mx6: Enable OTG detection on imx8mm and imx8mn 
The imx8mm and imx8mn appear compatible with imx7d-usb
flags in the OTG driver.  If the dr_mode is defined as
host or peripheral, the device appears to operate correctly,
however the auto host/peripheral detection results in an error.

The solution isn't just adding checks for imx8mm and imx8mn to
the check for imx7, because the USB clock needs to be running
to read from the USBNC_PHY_STATUS_OFFSET register or it will hang.

Marek requested that I not enable the clocks in ehci_usb_of_to_plat,
so I modified that function to return an unknown state if the
device tree does not explicitly state whether it is a host
or a peripheral.

When the driver probes, it looks to see if it's in the unknown
state, and only then will it read the register to auto-detect.

Signed-off-by: Adam Ford <aford173@gmail.com>
Tested-by: Tim Harvey <tharvey@gateworks.com>
2022-02-11 00:03:48 +01:00

809 lines
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
* Copyright (C) 2010 Freescale Semiconductor, Inc.
*/
#include <common.h>
#include <clk.h>
#include <log.h>
#include <usb.h>
#include <errno.h>
#include <wait_bit.h>
#include <asm/global_data.h>
#include <linux/compiler.h>
#include <linux/delay.h>
#include <usb/ehci-ci.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/clock.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/mach-imx/sys_proto.h>
#include <dm.h>
#include <asm/mach-types.h>
#include <power/regulator.h>
#include <linux/usb/otg.h>
#include <linux/usb/phy.h>
#include "ehci.h"
DECLARE_GLOBAL_DATA_PTR;
#define USB_OTGREGS_OFFSET 0x000
#define USB_H1REGS_OFFSET 0x200
#define USB_H2REGS_OFFSET 0x400
#define USB_H3REGS_OFFSET 0x600
#define USB_OTHERREGS_OFFSET 0x800
#define USB_H1_CTRL_OFFSET 0x04
#define USBPHY_CTRL 0x00000030
#define USBPHY_CTRL_SET 0x00000034
#define USBPHY_CTRL_CLR 0x00000038
#define USBPHY_CTRL_TOG 0x0000003c
#define USBPHY_PWD 0x00000000
#define USBPHY_CTRL_SFTRST 0x80000000
#define USBPHY_CTRL_CLKGATE 0x40000000
#define USBPHY_CTRL_ENUTMILEVEL3 0x00008000
#define USBPHY_CTRL_ENUTMILEVEL2 0x00004000
#define USBPHY_CTRL_OTG_ID 0x08000000
#define ANADIG_USB2_CHRG_DETECT_EN_B 0x00100000
#define ANADIG_USB2_CHRG_DETECT_CHK_CHRG_B 0x00080000
#define ANADIG_USB2_PLL_480_CTRL_BYPASS 0x00010000
#define ANADIG_USB2_PLL_480_CTRL_ENABLE 0x00002000
#define ANADIG_USB2_PLL_480_CTRL_POWER 0x00001000
#define ANADIG_USB2_PLL_480_CTRL_EN_USB_CLKS 0x00000040
#define USBNC_OFFSET 0x200
#define USBNC_PHY_STATUS_OFFSET 0x23C
#define USBNC_PHYSTATUS_ID_DIG (1 << 4) /* otg_id status */
#define USBNC_PHYCFG2_ACAENB (1 << 4) /* otg_id detection enable */
#define UCTRL_PWR_POL (1 << 9) /* OTG Polarity of Power Pin */
#define UCTRL_OVER_CUR_POL (1 << 8) /* OTG Polarity of Overcurrent */
#define UCTRL_OVER_CUR_DIS (1 << 7) /* Disable OTG Overcurrent Detection */
/* USBCMD */
#define UCMD_RUN_STOP (1 << 0) /* controller run/stop */
#define UCMD_RESET (1 << 1) /* controller reset */
/* If this is not defined, assume MX6/MX7/MX8M SoC default */
#ifndef CONFIG_MXC_USB_PORTSC
#define CONFIG_MXC_USB_PORTSC (PORT_PTS_UTMI | PORT_PTS_PTW)
#endif
/* Base address for this IP block is 0x02184800 */
struct usbnc_regs {
u32 ctrl[4]; /* otg/host1-3 */
u32 uh2_hsic_ctrl;
u32 uh3_hsic_ctrl;
u32 otg_phy_ctrl_0;
u32 uh1_phy_ctrl_0;
u32 reserve1[4];
u32 phy_cfg1;
u32 phy_cfg2;
u32 reserve2;
u32 phy_status;
u32 reserve3[4];
u32 adp_cfg1;
u32 adp_cfg2;
u32 adp_status;
};
#if defined(CONFIG_MX6) && !defined(CONFIG_PHY)
static void usb_power_config_mx6(struct anatop_regs __iomem *anatop,
int anatop_bits_index)
{
void __iomem *chrg_detect;
void __iomem *pll_480_ctrl_clr;
void __iomem *pll_480_ctrl_set;
if (!is_mx6())
return;
switch (anatop_bits_index) {
case 0:
chrg_detect = &anatop->usb1_chrg_detect;
pll_480_ctrl_clr = &anatop->usb1_pll_480_ctrl_clr;
pll_480_ctrl_set = &anatop->usb1_pll_480_ctrl_set;
break;
case 1:
chrg_detect = &anatop->usb2_chrg_detect;
pll_480_ctrl_clr = &anatop->usb2_pll_480_ctrl_clr;
pll_480_ctrl_set = &anatop->usb2_pll_480_ctrl_set;
break;
default:
return;
}
/*
* Some phy and power's special controls
* 1. The external charger detector needs to be disabled
* or the signal at DP will be poor
* 2. The PLL's power and output to usb
* is totally controlled by IC, so the Software only needs
* to enable them at initializtion.
*/
writel(ANADIG_USB2_CHRG_DETECT_EN_B |
ANADIG_USB2_CHRG_DETECT_CHK_CHRG_B,
chrg_detect);
writel(ANADIG_USB2_PLL_480_CTRL_BYPASS,
pll_480_ctrl_clr);
writel(ANADIG_USB2_PLL_480_CTRL_ENABLE |
ANADIG_USB2_PLL_480_CTRL_POWER |
ANADIG_USB2_PLL_480_CTRL_EN_USB_CLKS,
pll_480_ctrl_set);
}
#else
static void __maybe_unused
usb_power_config_mx6(void *anatop, int anatop_bits_index) { }
#endif
#if defined(CONFIG_MX7) && !defined(CONFIG_PHY)
static void usb_power_config_mx7(struct usbnc_regs *usbnc)
{
void __iomem *phy_cfg2 = (void __iomem *)(&usbnc->phy_cfg2);
if (!is_mx7())
return;
/*
* Clear the ACAENB to enable usb_otg_id detection,
* otherwise it is the ACA detection enabled.
*/
clrbits_le32(phy_cfg2, USBNC_PHYCFG2_ACAENB);
}
#else
static void __maybe_unused
usb_power_config_mx7(void *usbnc) { }
#endif
#if defined(CONFIG_MX7ULP) && !defined(CONFIG_PHY)
static void usb_power_config_mx7ulp(struct usbphy_regs __iomem *usbphy)
{
if (!is_mx7ulp())
return;
writel(ANADIG_USB2_CHRG_DETECT_EN_B |
ANADIG_USB2_CHRG_DETECT_CHK_CHRG_B,
&usbphy->usb1_chrg_detect);
scg_enable_usb_pll(true);
}
#else
static void __maybe_unused
usb_power_config_mx7ulp(void *usbphy) { }
#endif
#if defined(CONFIG_MX6) || defined(CONFIG_MX7ULP) || defined(CONFIG_IMXRT)
static const unsigned phy_bases[] = {
USB_PHY0_BASE_ADDR,
#if defined(USB_PHY1_BASE_ADDR)
USB_PHY1_BASE_ADDR,
#endif
};
#if !defined(CONFIG_PHY)
static void usb_internal_phy_clock_gate(void __iomem *phy_reg, int on)
{
phy_reg += on ? USBPHY_CTRL_CLR : USBPHY_CTRL_SET;
writel(USBPHY_CTRL_CLKGATE, phy_reg);
}
/* Return 0 : host node, <>0 : device mode */
static int usb_phy_enable(struct usb_ehci *ehci, void __iomem *phy_reg)
{
void __iomem *phy_ctrl;
void __iomem *usb_cmd;
int ret;
phy_ctrl = (void __iomem *)(phy_reg + USBPHY_CTRL);
usb_cmd = (void __iomem *)&ehci->usbcmd;
/* Stop then Reset */
clrbits_le32(usb_cmd, UCMD_RUN_STOP);
ret = wait_for_bit_le32(usb_cmd, UCMD_RUN_STOP, false, 10000, false);
if (ret)
return ret;
setbits_le32(usb_cmd, UCMD_RESET);
ret = wait_for_bit_le32(usb_cmd, UCMD_RESET, false, 10000, false);
if (ret)
return ret;
/* Reset USBPHY module */
setbits_le32(phy_ctrl, USBPHY_CTRL_SFTRST);
udelay(10);
/* Remove CLKGATE and SFTRST */
clrbits_le32(phy_ctrl, USBPHY_CTRL_CLKGATE | USBPHY_CTRL_SFTRST);
udelay(10);
/* Power up the PHY */
writel(0, phy_reg + USBPHY_PWD);
/* enable FS/LS device */
setbits_le32(phy_ctrl, USBPHY_CTRL_ENUTMILEVEL2 |
USBPHY_CTRL_ENUTMILEVEL3);
return 0;
}
#endif
int usb_phy_mode(int port)
{
void __iomem *phy_reg;
void __iomem *phy_ctrl;
u32 val;
phy_reg = (void __iomem *)phy_bases[port];
phy_ctrl = (void __iomem *)(phy_reg + USBPHY_CTRL);
val = readl(phy_ctrl);
if (val & USBPHY_CTRL_OTG_ID)
return USB_INIT_DEVICE;
else
return USB_INIT_HOST;
}
#elif defined(CONFIG_MX7)
int usb_phy_mode(int port)
{
struct usbnc_regs *usbnc = (struct usbnc_regs *)(USB_BASE_ADDR +
(0x10000 * port) + USBNC_OFFSET);
void __iomem *status = (void __iomem *)(&usbnc->phy_status);
u32 val;
val = readl(status);
if (val & USBNC_PHYSTATUS_ID_DIG)
return USB_INIT_DEVICE;
else
return USB_INIT_HOST;
}
#endif
#if !defined(CONFIG_PHY)
/* Should be done in the MXS PHY driver */
static void usb_oc_config(struct usbnc_regs *usbnc, int index)
{
void __iomem *ctrl = (void __iomem *)(&usbnc->ctrl[index]);
#if CONFIG_MACH_TYPE == MACH_TYPE_MX6Q_ARM2
/* mx6qarm2 seems to required a different setting*/
clrbits_le32(ctrl, UCTRL_OVER_CUR_POL);
#else
setbits_le32(ctrl, UCTRL_OVER_CUR_POL);
#endif
setbits_le32(ctrl, UCTRL_OVER_CUR_DIS);
/* Set power polarity to high active */
#ifdef CONFIG_MXC_USB_OTG_HACTIVE
setbits_le32(ctrl, UCTRL_PWR_POL);
#else
clrbits_le32(ctrl, UCTRL_PWR_POL);
#endif
}
#endif
#if !CONFIG_IS_ENABLED(DM_USB)
/**
* board_usb_phy_mode - override usb phy mode
* @port: usb host/otg port
*
* Target board specific, override usb_phy_mode.
* When usb-otg is used as usb host port, iomux pad usb_otg_id can be
* left disconnected in this case usb_phy_mode will not be able to identify
* the phy mode that usb port is used.
* Machine file overrides board_usb_phy_mode.
*
* Return: USB_INIT_DEVICE or USB_INIT_HOST
*/
int __weak board_usb_phy_mode(int port)
{
return usb_phy_mode(port);
}
/**
* board_ehci_hcd_init - set usb vbus voltage
* @port: usb otg port
*
* Target board specific, setup iomux pad to setup supply vbus voltage
* for usb otg port. Machine board file overrides board_ehci_hcd_init
*
* Return: 0 Success
*/
int __weak board_ehci_hcd_init(int port)
{
return 0;
}
/**
* board_ehci_power - enables/disables usb vbus voltage
* @port: usb otg port
* @on: on/off vbus voltage
*
* Enables/disables supply vbus voltage for usb otg port.
* Machine board file overrides board_ehci_power
*
* Return: 0 Success
*/
int __weak board_ehci_power(int port, int on)
{
return 0;
}
int ehci_hcd_init(int index, enum usb_init_type init,
struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
enum usb_init_type type;
#if defined(CONFIG_MX6) || defined(CONFIG_IMXRT)
u32 controller_spacing = 0x200;
struct anatop_regs __iomem *anatop =
(struct anatop_regs __iomem *)ANATOP_BASE_ADDR;
struct usbnc_regs *usbnc = (struct usbnc_regs *)(USB_BASE_ADDR +
USB_OTHERREGS_OFFSET);
#elif defined(CONFIG_MX7)
u32 controller_spacing = 0x10000;
struct usbnc_regs *usbnc = (struct usbnc_regs *)(USB_BASE_ADDR +
(0x10000 * index) + USBNC_OFFSET);
#elif defined(CONFIG_MX7ULP)
u32 controller_spacing = 0x10000;
struct usbphy_regs __iomem *usbphy =
(struct usbphy_regs __iomem *)USB_PHY0_BASE_ADDR;
struct usbnc_regs *usbnc = (struct usbnc_regs *)(USB_BASE_ADDR +
(0x10000 * index) + USBNC_OFFSET);
#endif
struct usb_ehci *ehci = (struct usb_ehci *)(USB_BASE_ADDR +
(controller_spacing * index));
int ret;
if (index > 3)
return -EINVAL;
if (CONFIG_IS_ENABLED(IMX_MODULE_FUSE)) {
if (usb_fused((ulong)ehci)) {
printf("SoC fuse indicates USB@0x%lx is unavailable.\n",
(ulong)ehci);
return -ENODEV;
}
}
enable_usboh3_clk(1);
mdelay(1);
/* Do board specific initialization */
ret = board_ehci_hcd_init(index);
if (ret) {
enable_usboh3_clk(0);
return ret;
}
#if defined(CONFIG_MX6) || defined(CONFIG_IMXRT)
usb_power_config_mx6(anatop, index);
#elif defined (CONFIG_MX7)
usb_power_config_mx7(usbnc);
#elif defined (CONFIG_MX7ULP)
usb_power_config_mx7ulp(usbphy);
#endif
usb_oc_config(usbnc, index);
#if defined(CONFIG_MX6) || defined(CONFIG_MX7ULP) || defined(CONFIG_IMXRT)
if (index < ARRAY_SIZE(phy_bases)) {
usb_internal_phy_clock_gate((void __iomem *)phy_bases[index], 1);
usb_phy_enable(ehci, (void __iomem *)phy_bases[index]);
}
#endif
type = board_usb_phy_mode(index);
if (hccr && hcor) {
*hccr = (struct ehci_hccr *)((uintptr_t)&ehci->caplength);
*hcor = (struct ehci_hcor *)((uintptr_t)*hccr +
HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
}
if ((type == init) || (type == USB_INIT_DEVICE))
board_ehci_power(index, (type == USB_INIT_DEVICE) ? 0 : 1);
if (type != init)
return -ENODEV;
if (type == USB_INIT_DEVICE)
return 0;
setbits_le32(&ehci->usbmode, CM_HOST);
writel(CONFIG_MXC_USB_PORTSC, &ehci->portsc);
setbits_le32(&ehci->portsc, USB_EN);
mdelay(10);
return 0;
}
int ehci_hcd_stop(int index)
{
return 0;
}
#else
struct ehci_mx6_priv_data {
struct ehci_ctrl ctrl;
struct usb_ehci *ehci;
struct udevice *vbus_supply;
struct clk clk;
struct phy phy;
enum usb_init_type init_type;
enum usb_phy_interface phy_type;
#if !defined(CONFIG_PHY)
int portnr;
void __iomem *phy_addr;
void __iomem *misc_addr;
void __iomem *anatop_addr;
#endif
};
static u32 mx6_portsc(enum usb_phy_interface phy_type)
{
switch (phy_type) {
case USBPHY_INTERFACE_MODE_UTMI:
return PORT_PTS_UTMI;
case USBPHY_INTERFACE_MODE_UTMIW:
return PORT_PTS_UTMI | PORT_PTS_PTW;
case USBPHY_INTERFACE_MODE_ULPI:
return PORT_PTS_ULPI;
case USBPHY_INTERFACE_MODE_SERIAL:
return PORT_PTS_SERIAL;
case USBPHY_INTERFACE_MODE_HSIC:
return PORT_PTS_HSIC;
default:
return CONFIG_MXC_USB_PORTSC;
}
}
static int mx6_init_after_reset(struct ehci_ctrl *dev)
{
struct ehci_mx6_priv_data *priv = dev->priv;
enum usb_init_type type = priv->init_type;
struct usb_ehci *ehci = priv->ehci;
#if !defined(CONFIG_PHY)
usb_power_config_mx6(priv->anatop_addr, priv->portnr);
usb_power_config_mx7(priv->misc_addr);
usb_power_config_mx7ulp(priv->phy_addr);
usb_oc_config(priv->misc_addr, priv->portnr);
#if defined(CONFIG_MX6) || defined(CONFIG_MX7ULP)
usb_internal_phy_clock_gate(priv->phy_addr, 1);
usb_phy_enable(ehci, priv->phy_addr);
#endif
#endif
#if CONFIG_IS_ENABLED(DM_REGULATOR)
if (priv->vbus_supply) {
int ret;
ret = regulator_set_enable(priv->vbus_supply,
(type == USB_INIT_DEVICE) ?
false : true);
if (ret && ret != -ENOSYS) {
printf("Error enabling VBUS supply (ret=%i)\n", ret);
return ret;
}
}
#endif
if (type == USB_INIT_DEVICE)
return 0;
setbits_le32(&ehci->usbmode, CM_HOST);
writel(mx6_portsc(priv->phy_type), &ehci->portsc);
setbits_le32(&ehci->portsc, USB_EN);
mdelay(10);
return 0;
}
static const struct ehci_ops mx6_ehci_ops = {
.init_after_reset = mx6_init_after_reset
};
static int ehci_usb_phy_mode(struct udevice *dev)
{
struct usb_plat *plat = dev_get_plat(dev);
void *__iomem addr = dev_read_addr_ptr(dev);
void *__iomem phy_ctrl, *__iomem phy_status;
const void *blob = gd->fdt_blob;
int offset = dev_of_offset(dev), phy_off;
u32 val;
/*
* About fsl,usbphy, Refer to
* Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt.
*/
if (is_mx6() || is_mx7ulp() || is_imxrt()) {
phy_off = fdtdec_lookup_phandle(blob,
offset,
"fsl,usbphy");
if (phy_off < 0)
return -EINVAL;
addr = (void __iomem *)fdtdec_get_addr(blob, phy_off,
"reg");
if ((fdt_addr_t)addr == FDT_ADDR_T_NONE)
return -EINVAL;
phy_ctrl = (void __iomem *)(addr + USBPHY_CTRL);
val = readl(phy_ctrl);
if (val & USBPHY_CTRL_OTG_ID)
plat->init_type = USB_INIT_DEVICE;
else
plat->init_type = USB_INIT_HOST;
} else if (is_mx7() || is_imx8mm() || is_imx8mn()) {
phy_status = (void __iomem *)(addr +
USBNC_PHY_STATUS_OFFSET);
val = readl(phy_status);
if (val & USBNC_PHYSTATUS_ID_DIG)
plat->init_type = USB_INIT_DEVICE;
else
plat->init_type = USB_INIT_HOST;
} else {
return -EINVAL;
}
return 0;
}
static int ehci_usb_of_to_plat(struct udevice *dev)
{
struct usb_plat *plat = dev_get_plat(dev);
enum usb_dr_mode dr_mode;
dr_mode = usb_get_dr_mode(dev_ofnode(dev));
switch (dr_mode) {
case USB_DR_MODE_HOST:
plat->init_type = USB_INIT_HOST;
break;
case USB_DR_MODE_PERIPHERAL:
plat->init_type = USB_INIT_DEVICE;
break;
default:
plat->init_type = USB_INIT_UNKNOWN;
};
return 0;
}
static int mx6_parse_dt_addrs(struct udevice *dev)
{
#if !defined(CONFIG_PHY)
struct ehci_mx6_priv_data *priv = dev_get_priv(dev);
int phy_off, misc_off;
const void *blob = gd->fdt_blob;
int offset = dev_of_offset(dev);
void *__iomem addr;
phy_off = fdtdec_lookup_phandle(blob, offset, "fsl,usbphy");
if (phy_off < 0) {
phy_off = fdtdec_lookup_phandle(blob, offset, "phys");
if (phy_off < 0)
return -EINVAL;
}
misc_off = fdtdec_lookup_phandle(blob, offset, "fsl,usbmisc");
if (misc_off < 0)
return -EINVAL;
addr = (void __iomem *)fdtdec_get_addr(blob, phy_off, "reg");
if ((fdt_addr_t)addr == FDT_ADDR_T_NONE)
addr = NULL;
priv->phy_addr = addr;
addr = (void __iomem *)fdtdec_get_addr(blob, misc_off, "reg");
if ((fdt_addr_t)addr == FDT_ADDR_T_NONE)
return -EINVAL;
priv->misc_addr = addr;
#if defined(CONFIG_MX6)
int anatop_off, ret, devnump;
ret = fdtdec_get_alias_seq(blob, dev->uclass->uc_drv->name,
phy_off, &devnump);
if (ret < 0)
return ret;
priv->portnr = devnump;
/* Resolve ANATOP offset through USB PHY node */
anatop_off = fdtdec_lookup_phandle(blob, phy_off, "fsl,anatop");
if (anatop_off < 0)
return -EINVAL;
addr = (void __iomem *)fdtdec_get_addr(blob, anatop_off, "reg");
if ((fdt_addr_t)addr == FDT_ADDR_T_NONE)
return -EINVAL;
priv->anatop_addr = addr;
#endif
#endif
return 0;
}
static int ehci_usb_probe(struct udevice *dev)
{
struct usb_plat *plat = dev_get_plat(dev);
struct usb_ehci *ehci = dev_read_addr_ptr(dev);
struct ehci_mx6_priv_data *priv = dev_get_priv(dev);
enum usb_init_type type = plat->init_type;
struct ehci_hccr *hccr;
struct ehci_hcor *hcor;
int ret;
if (CONFIG_IS_ENABLED(IMX_MODULE_FUSE)) {
if (usb_fused((ulong)ehci)) {
printf("SoC fuse indicates USB@0x%lx is unavailable.\n",
(ulong)ehci);
return -ENODEV;
}
}
ret = mx6_parse_dt_addrs(dev);
if (ret)
return ret;
priv->ehci = ehci;
priv->init_type = type;
priv->phy_type = usb_get_phy_mode(dev_ofnode(dev));
#if CONFIG_IS_ENABLED(CLK)
ret = clk_get_by_index(dev, 0, &priv->clk);
if (ret < 0)
return ret;
ret = clk_enable(&priv->clk);
if (ret)
return ret;
#else
/* Compatibility with DM_USB and !CLK */
enable_usboh3_clk(1);
mdelay(1);
#endif
/*
* If the device tree didn't specify host or device,
* the default is USB_INIT_UNKNOWN, so we need to check
* the register. For imx8mm and imx8mn, the clocks need to be
* running first, so we defer the check until they are.
*/
if (priv->init_type == USB_INIT_UNKNOWN) {
ret = ehci_usb_phy_mode(dev);
if (ret)
goto err_clk;
else
priv->init_type = plat->init_type;
}
#if CONFIG_IS_ENABLED(DM_REGULATOR)
ret = device_get_supply_regulator(dev, "vbus-supply",
&priv->vbus_supply);
if (ret)
debug("%s: No vbus supply\n", dev->name);
#endif
#if !defined(CONFIG_PHY)
usb_power_config_mx6(priv->anatop_addr, priv->portnr);
usb_power_config_mx7(priv->misc_addr);
usb_power_config_mx7ulp(priv->phy_addr);
usb_oc_config(priv->misc_addr, priv->portnr);
#if defined(CONFIG_MX6) || defined(CONFIG_MX7ULP) || defined(CONFIG_IMXRT)
usb_internal_phy_clock_gate(priv->phy_addr, 1);
usb_phy_enable(ehci, priv->phy_addr);
#endif
#endif
#if CONFIG_IS_ENABLED(DM_REGULATOR)
if (priv->vbus_supply) {
ret = regulator_set_enable(priv->vbus_supply,
(type == USB_INIT_DEVICE) ?
false : true);
if (ret && ret != -ENOSYS) {
printf("Error enabling VBUS supply (ret=%i)\n", ret);
goto err_clk;
}
}
#endif
if (priv->init_type == USB_INIT_HOST) {
setbits_le32(&ehci->usbmode, CM_HOST);
writel(mx6_portsc(priv->phy_type), &ehci->portsc);
setbits_le32(&ehci->portsc, USB_EN);
}
mdelay(10);
#if defined(CONFIG_PHY)
ret = ehci_setup_phy(dev, &priv->phy, 0);
if (ret)
goto err_regulator;
#endif
hccr = (struct ehci_hccr *)((uintptr_t)&ehci->caplength);
hcor = (struct ehci_hcor *)((uintptr_t)hccr +
HC_LENGTH(ehci_readl(&(hccr)->cr_capbase)));
ret = ehci_register(dev, hccr, hcor, &mx6_ehci_ops, 0, priv->init_type);
if (ret)
goto err_phy;
return ret;
err_phy:
#if defined(CONFIG_PHY)
ehci_shutdown_phy(dev, &priv->phy);
err_regulator:
#endif
#if CONFIG_IS_ENABLED(DM_REGULATOR)
if (priv->vbus_supply)
regulator_set_enable(priv->vbus_supply, false);
#endif
err_clk:
#if CONFIG_IS_ENABLED(CLK)
clk_disable(&priv->clk);
#else
/* Compatibility with DM_USB and !CLK */
enable_usboh3_clk(0);
#endif
return ret;
}
int ehci_usb_remove(struct udevice *dev)
{
struct ehci_mx6_priv_data *priv __maybe_unused = dev_get_priv(dev);
ehci_deregister(dev);
#if defined(CONFIG_PHY)
ehci_shutdown_phy(dev, &priv->phy);
#endif
#if CONFIG_IS_ENABLED(DM_REGULATOR)
if (priv->vbus_supply)
regulator_set_enable(priv->vbus_supply, false);
#endif
#if CONFIG_IS_ENABLED(CLK)
clk_disable(&priv->clk);
#endif
return 0;
}
static const struct udevice_id mx6_usb_ids[] = {
{ .compatible = "fsl,imx27-usb" },
{ .compatible = "fsl,imx7d-usb" },
{ .compatible = "fsl,imxrt-usb" },
{ }
};
U_BOOT_DRIVER(usb_mx6) = {
.name = "ehci_mx6",
.id = UCLASS_USB,
.of_match = mx6_usb_ids,
.of_to_plat = ehci_usb_of_to_plat,
.probe = ehci_usb_probe,
.remove = ehci_usb_remove,
.ops = &ehci_usb_ops,
.plat_auto = sizeof(struct usb_plat),
.priv_auto = sizeof(struct ehci_mx6_priv_data),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
#endif
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