2 * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
4 * (C) Copyright 2009 Freescale Semiconductor, Inc.
6 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/arch/imx-regs.h>
13 #include <asm/arch/iomux-mx51.h>
15 #include <usb/ehci-fsl.h>
19 #include "../../../drivers/usb/host/ehci.h"
22 * Configure the USB H1 and USB H2 IOMUX
24 void setup_iomux_usb(void)
26 static const iomux_v3_cfg_t usb_h1_pads[] = {
27 MX51_PAD_USBH1_CLK__USBH1_CLK,
28 MX51_PAD_USBH1_DIR__USBH1_DIR,
29 MX51_PAD_USBH1_STP__USBH1_STP,
30 MX51_PAD_USBH1_NXT__USBH1_NXT,
31 MX51_PAD_USBH1_DATA0__USBH1_DATA0,
32 MX51_PAD_USBH1_DATA1__USBH1_DATA1,
33 MX51_PAD_USBH1_DATA2__USBH1_DATA2,
34 MX51_PAD_USBH1_DATA3__USBH1_DATA3,
35 MX51_PAD_USBH1_DATA4__USBH1_DATA4,
36 MX51_PAD_USBH1_DATA5__USBH1_DATA5,
37 MX51_PAD_USBH1_DATA6__USBH1_DATA6,
38 MX51_PAD_USBH1_DATA7__USBH1_DATA7,
41 static const iomux_v3_cfg_t usb_pads[] = {
42 MX51_PAD_EIM_D27__GPIO2_9, /* USB PHY reset */
43 MX51_PAD_GPIO1_5__GPIO1_5, /* USB HUB reset */
44 NEW_PAD_CTRL(MX51_PAD_EIM_A22__GPIO2_16, 0), /* WIFI /EN */
45 NEW_PAD_CTRL(MX51_PAD_EIM_A16__GPIO2_10, 0), /* WIFI RESET */
46 NEW_PAD_CTRL(MX51_PAD_EIM_A17__GPIO2_11, 0), /* BT /EN */
49 imx_iomux_v3_setup_multiple_pads(usb_h1_pads, ARRAY_SIZE(usb_h1_pads));
51 if (machine_is_efikasb()) {
52 static const iomux_v3_cfg_t usb_h2_pads[] = {
53 MX51_PAD_EIM_A24__USBH2_CLK,
54 MX51_PAD_EIM_A25__USBH2_DIR,
55 MX51_PAD_EIM_A26__USBH2_STP,
56 MX51_PAD_EIM_A27__USBH2_NXT,
57 MX51_PAD_EIM_D16__USBH2_DATA0,
58 MX51_PAD_EIM_D17__USBH2_DATA1,
59 MX51_PAD_EIM_D18__USBH2_DATA2,
60 MX51_PAD_EIM_D19__USBH2_DATA3,
61 MX51_PAD_EIM_D20__USBH2_DATA4,
62 MX51_PAD_EIM_D21__USBH2_DATA5,
63 MX51_PAD_EIM_D22__USBH2_DATA6,
64 MX51_PAD_EIM_D23__USBH2_DATA7,
67 imx_iomux_v3_setup_multiple_pads(usb_h2_pads,
68 ARRAY_SIZE(usb_h2_pads));
71 imx_iomux_v3_setup_multiple_pads(usb_pads, ARRAY_SIZE(usb_pads));
75 * Enable devices connected to USB BUSes
77 static void efika_usb_enable_devices(void)
79 /* Enable Bluetooth */
80 gpio_direction_output(IMX_GPIO_NR(2, 11), 0);
82 gpio_set_value(IMX_GPIO_NR(2, 11), 1);
85 gpio_direction_output(IMX_GPIO_NR(2, 16), 1);
88 /* Reset the WiFi chip */
89 gpio_direction_output(IMX_GPIO_NR(2, 10), 0);
91 gpio_set_value(IMX_GPIO_NR(2, 10), 1);
95 * Reset USB HUB (or HUBs on EfikaSB)
97 static void efika_usb_hub_reset(void)
100 gpio_direction_output(IMX_GPIO_NR(1, 5), 1);
102 gpio_set_value(IMX_GPIO_NR(1, 5), 0);
104 gpio_set_value(IMX_GPIO_NR(1, 5), 1);
108 * Reset USB PHY (or PHYs on EfikaSB)
110 static void efika_usb_phy_reset(void)
112 /* SMSC 3317 PHY reset */
113 gpio_direction_output(IMX_GPIO_NR(2, 9), 0);
115 gpio_set_value(IMX_GPIO_NR(2, 9), 1);
118 static void efika_ehci_init(struct usb_ehci *ehci, uint32_t stp_gpio,
119 iomux_v3_cfg_t stp_pad_gpio,
120 iomux_v3_cfg_t stp_pad_usb)
123 struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
124 struct ulpi_viewport ulpi_vp;
126 imx_iomux_v3_setup_pad(stp_pad_gpio);
127 gpio_direction_output(stp_gpio, 0);
129 gpio_set_value(stp_gpio, 1);
132 imx_iomux_v3_setup_pad(stp_pad_usb);
135 ulpi_vp.viewport_addr = (u32)&ehci->ulpi_viewpoint;
136 ulpi_vp.port_num = 0;
138 ret = ulpi_init(&ulpi_vp);
140 printf("Efika USB ULPI initialization failed\n");
145 ulpi_write(&ulpi_vp, &ulpi->otg_ctrl,
146 ULPI_OTG_DP_PULLDOWN | ULPI_OTG_DM_PULLDOWN |
147 ULPI_OTG_EXTVBUSIND);
148 ulpi_write(&ulpi_vp, &ulpi->function_ctrl,
149 ULPI_FC_FULL_SPEED | ULPI_FC_OPMODE_NORMAL |
151 ulpi_write(&ulpi_vp, &ulpi->iface_ctrl, 0);
154 ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set,
155 ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
160 * NOTE: This violates USB specification, but otherwise, USB on Efika
163 ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set, ULPI_OTG_CHRGVBUS);
166 int board_ehci_hcd_init(int port)
168 /* Init iMX51 EHCI */
169 efika_usb_phy_reset();
170 efika_usb_hub_reset();
171 efika_usb_enable_devices();
176 void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
178 uint32_t port = OTG_BASE_ADDR + (0x200 * CONFIG_MXC_USB_PORT);
179 struct usb_ehci *ehci = (struct usb_ehci *)port;
180 struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
181 struct ulpi_viewport ulpi_vp;
183 ulpi_vp.viewport_addr = (u32)&ehci->ulpi_viewpoint;
184 ulpi_vp.port_num = 0;
186 ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set, ULPI_OTG_CHRGVBUS);
190 /* terminate the reset */
191 *reg = ehci_readl(status_reg);
195 void board_ehci_hcd_postinit(struct usb_ehci *ehci, int port)
200 /* Adjust UTMI PHY frequency to 24MHz */
201 tmp = readl(OTG_BASE_ADDR + 0x80c);
202 tmp = (tmp & ~0x3) | 0x01;
203 writel(tmp, OTG_BASE_ADDR + 0x80c);
204 } else if (port == 1) {
205 efika_ehci_init(ehci, IMX_GPIO_NR(1, 27),
206 MX51_PAD_USBH1_STP__GPIO1_27,
207 MX51_PAD_USBH1_STP__USBH1_STP);
208 } else if ((port == 2) && machine_is_efikasb()) {
209 efika_ehci_init(ehci, IMX_GPIO_NR(2, 20),
210 MX51_PAD_EIM_A26__GPIO2_20,
211 MX51_PAD_EIM_A26__USBH2_STP);
219 * Ethernet on the Smarttop is on the USB bus. Rather than give an error about
220 * "CPU Net Initialization Failed", just pass this test since no other settings
221 * are required. Smartbook doesn't have built-in Ethernet but we will let it
222 * pass anyway considering someone may have plugged in a USB stick and all
223 * they need to do is run "usb start".
225 int board_eth_init(bd_t *bis)