1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2010 Google, Inc.
5 * This software is licensed under the terms of the GNU General Public
6 * License version 2, as published by the Free Software Foundation, and
7 * may be copied, distributed, and modified under those terms.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
16 #ifndef __TEGRA_USB_PHY_H
17 #define __TEGRA_USB_PHY_H
19 #include <linux/clk.h>
20 #include <linux/gpio.h>
21 #include <linux/regmap.h>
22 #include <linux/reset.h>
23 #include <linux/usb/otg.h>
26 * utmi_pll_config_in_car_module: true if the UTMI PLL configuration registers
27 * should be set up by clk-tegra, false if by the PHY code
28 * has_hostpc: true if the USB controller has the HOSTPC extension, which
29 * changes the location of the PHCD and PTS fields
30 * requires_usbmode_setup: true if the USBMODE register needs to be set to
32 * requires_extra_tuning_parameters: true if xcvr_hsslew, hssquelch_level
33 * and hsdiscon_level should be set for adequate signal quality
34 * requires_pmc_ao_power_up: true if USB AO is powered down by default
37 struct tegra_phy_soc_config {
38 bool utmi_pll_config_in_car_module;
40 bool requires_usbmode_setup;
41 bool requires_extra_tuning_parameters;
42 bool requires_pmc_ao_power_up;
45 struct tegra_utmip_config {
46 u8 hssync_start_delay;
50 bool xcvr_setup_use_fuses;
59 enum tegra_usb_phy_port_speed {
60 TEGRA_USB_PHY_PORT_SPEED_FULL = 0,
61 TEGRA_USB_PHY_PORT_SPEED_LOW,
62 TEGRA_USB_PHY_PORT_SPEED_HIGH,
65 struct tegra_xtal_freq;
67 struct tegra_usb_phy {
70 const struct tegra_xtal_freq *freq;
72 void __iomem *pad_regs;
76 struct regulator *vbus;
77 struct regmap *pmc_regmap;
78 enum usb_dr_mode mode;
80 const struct tegra_phy_soc_config *soc_config;
85 struct gpio_desc *reset_gpio;
86 struct reset_control *pad_rst;
92 void tegra_usb_phy_preresume(struct usb_phy *phy);
94 void tegra_usb_phy_postresume(struct usb_phy *phy);
96 void tegra_ehci_phy_restore_start(struct usb_phy *phy,
97 enum tegra_usb_phy_port_speed port_speed);
99 void tegra_ehci_phy_restore_end(struct usb_phy *phy);
101 #endif /* __TEGRA_USB_PHY_H */