2 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
3 * Copyright (C) 2010 Freescale Semiconductor, Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #include <linux/compiler.h>
20 #include <usb/ehci-fsl.h>
22 #include <asm/arch/imx-regs.h>
23 #include <asm/arch/clock.h>
24 #include <asm/arch/mx5x_pins.h>
25 #include <asm/arch/iomux.h>
29 #define MX5_USBOTHER_REGS_OFFSET 0x800
32 #define MXC_OTG_OFFSET 0
33 #define MXC_H1_OFFSET 0x200
34 #define MXC_H2_OFFSET 0x400
36 #define MXC_USBCTRL_OFFSET 0
37 #define MXC_USB_PHY_CTR_FUNC_OFFSET 0x8
38 #define MXC_USB_PHY_CTR_FUNC2_OFFSET 0xc
39 #define MXC_USB_CTRL_1_OFFSET 0x10
40 #define MXC_USBH2CTRL_OFFSET 0x14
43 #define MXC_OTG_UCTRL_OWIE_BIT (1 << 27) /* OTG wakeup intr enable */
44 #define MXC_OTG_UCTRL_OPM_BIT (1 << 24) /* OTG power mask */
45 #define MXC_H1_UCTRL_H1UIE_BIT (1 << 12) /* Host1 ULPI interrupt enable */
46 #define MXC_H1_UCTRL_H1WIE_BIT (1 << 11) /* HOST1 wakeup intr enable */
47 #define MXC_H1_UCTRL_H1PM_BIT (1 << 8) /* HOST1 power mask */
49 /* USB_PHY_CTRL_FUNC */
50 #define MXC_OTG_PHYCTRL_OC_DIS_BIT (1 << 8) /* OTG Disable Overcurrent Event */
51 #define MXC_H1_OC_DIS_BIT (1 << 5) /* UH1 Disable Overcurrent Event */
54 #define MXC_H2_UCTRL_H2UIE_BIT (1 << 8)
55 #define MXC_H2_UCTRL_H2WIE_BIT (1 << 7)
56 #define MXC_H2_UCTRL_H2PM_BIT (1 << 4)
59 #define MXC_USB_CTRL_UH1_EXT_CLK_EN (1 << 25)
61 /* USB pin configuration */
62 #define USB_PAD_CONFIG (PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST | \
63 PAD_CTL_DRV_HIGH | PAD_CTL_100K_PU | \
64 PAD_CTL_HYS_ENABLE | PAD_CTL_PUE_PULL)
68 * Configure the MX51 USB H1 IOMUX
70 void setup_iomux_usb_h1(void)
72 mxc_request_iomux(MX51_PIN_USBH1_STP, IOMUX_CONFIG_ALT0);
73 mxc_iomux_set_pad(MX51_PIN_USBH1_STP, USB_PAD_CONFIG);
74 mxc_request_iomux(MX51_PIN_USBH1_CLK, IOMUX_CONFIG_ALT0);
75 mxc_iomux_set_pad(MX51_PIN_USBH1_CLK, USB_PAD_CONFIG);
76 mxc_request_iomux(MX51_PIN_USBH1_DIR, IOMUX_CONFIG_ALT0);
77 mxc_iomux_set_pad(MX51_PIN_USBH1_DIR, USB_PAD_CONFIG);
78 mxc_request_iomux(MX51_PIN_USBH1_NXT, IOMUX_CONFIG_ALT0);
79 mxc_iomux_set_pad(MX51_PIN_USBH1_NXT, USB_PAD_CONFIG);
81 mxc_request_iomux(MX51_PIN_USBH1_DATA0, IOMUX_CONFIG_ALT0);
82 mxc_iomux_set_pad(MX51_PIN_USBH1_DATA0, USB_PAD_CONFIG);
83 mxc_request_iomux(MX51_PIN_USBH1_DATA1, IOMUX_CONFIG_ALT0);
84 mxc_iomux_set_pad(MX51_PIN_USBH1_DATA1, USB_PAD_CONFIG);
85 mxc_request_iomux(MX51_PIN_USBH1_DATA2, IOMUX_CONFIG_ALT0);
86 mxc_iomux_set_pad(MX51_PIN_USBH1_DATA2, USB_PAD_CONFIG);
87 mxc_request_iomux(MX51_PIN_USBH1_DATA3, IOMUX_CONFIG_ALT0);
88 mxc_iomux_set_pad(MX51_PIN_USBH1_DATA3, USB_PAD_CONFIG);
89 mxc_request_iomux(MX51_PIN_USBH1_DATA4, IOMUX_CONFIG_ALT0);
90 mxc_iomux_set_pad(MX51_PIN_USBH1_DATA4, USB_PAD_CONFIG);
91 mxc_request_iomux(MX51_PIN_USBH1_DATA5, IOMUX_CONFIG_ALT0);
92 mxc_iomux_set_pad(MX51_PIN_USBH1_DATA5, USB_PAD_CONFIG);
93 mxc_request_iomux(MX51_PIN_USBH1_DATA6, IOMUX_CONFIG_ALT0);
94 mxc_iomux_set_pad(MX51_PIN_USBH1_DATA6, USB_PAD_CONFIG);
95 mxc_request_iomux(MX51_PIN_USBH1_DATA7, IOMUX_CONFIG_ALT0);
96 mxc_iomux_set_pad(MX51_PIN_USBH1_DATA7, USB_PAD_CONFIG);
100 * Configure the MX51 USB H2 IOMUX
102 void setup_iomux_usb_h2(void)
104 mxc_request_iomux(MX51_PIN_EIM_A24, IOMUX_CONFIG_ALT2);
105 mxc_iomux_set_pad(MX51_PIN_EIM_A24, USB_PAD_CONFIG);
106 mxc_request_iomux(MX51_PIN_EIM_A25, IOMUX_CONFIG_ALT2);
107 mxc_iomux_set_pad(MX51_PIN_EIM_A25, USB_PAD_CONFIG);
108 mxc_request_iomux(MX51_PIN_EIM_A26, IOMUX_CONFIG_ALT2);
109 mxc_iomux_set_pad(MX51_PIN_EIM_A26, USB_PAD_CONFIG);
110 mxc_request_iomux(MX51_PIN_EIM_A27, IOMUX_CONFIG_ALT2);
111 mxc_iomux_set_pad(MX51_PIN_EIM_A27, USB_PAD_CONFIG);
113 mxc_request_iomux(MX51_PIN_EIM_D16, IOMUX_CONFIG_ALT2);
114 mxc_iomux_set_pad(MX51_PIN_EIM_D16, USB_PAD_CONFIG);
115 mxc_request_iomux(MX51_PIN_EIM_D17, IOMUX_CONFIG_ALT2);
116 mxc_iomux_set_pad(MX51_PIN_EIM_D17, USB_PAD_CONFIG);
117 mxc_request_iomux(MX51_PIN_EIM_D18, IOMUX_CONFIG_ALT2);
118 mxc_iomux_set_pad(MX51_PIN_EIM_D18, USB_PAD_CONFIG);
119 mxc_request_iomux(MX51_PIN_EIM_D19, IOMUX_CONFIG_ALT2);
120 mxc_iomux_set_pad(MX51_PIN_EIM_D19, USB_PAD_CONFIG);
121 mxc_request_iomux(MX51_PIN_EIM_D20, IOMUX_CONFIG_ALT2);
122 mxc_iomux_set_pad(MX51_PIN_EIM_D20, USB_PAD_CONFIG);
123 mxc_request_iomux(MX51_PIN_EIM_D21, IOMUX_CONFIG_ALT2);
124 mxc_iomux_set_pad(MX51_PIN_EIM_D21, USB_PAD_CONFIG);
125 mxc_request_iomux(MX51_PIN_EIM_D22, IOMUX_CONFIG_ALT2);
126 mxc_iomux_set_pad(MX51_PIN_EIM_D22, USB_PAD_CONFIG);
127 mxc_request_iomux(MX51_PIN_EIM_D23, IOMUX_CONFIG_ALT2);
128 mxc_iomux_set_pad(MX51_PIN_EIM_D23, USB_PAD_CONFIG);
132 int mxc_set_usbcontrol(int port, unsigned int flags)
135 void __iomem *usb_base = (void __iomem *)OTG_BASE_ADDR;
136 void __iomem *usbother_base;
139 usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET;
142 case 0: /* OTG port */
143 if (flags & MXC_EHCI_INTERNAL_PHY) {
144 v = __raw_readl(usbother_base +
145 MXC_USB_PHY_CTR_FUNC_OFFSET);
146 if (flags & MXC_EHCI_POWER_PINS_ENABLED)
147 /* OC/USBPWR is not used */
148 v |= MXC_OTG_PHYCTRL_OC_DIS_BIT;
150 /* OC/USBPWR is used */
151 v &= ~MXC_OTG_PHYCTRL_OC_DIS_BIT;
152 __raw_writel(v, usbother_base +
153 MXC_USB_PHY_CTR_FUNC_OFFSET);
155 v = __raw_readl(usbother_base + MXC_USBCTRL_OFFSET);
156 if (flags & MXC_EHCI_POWER_PINS_ENABLED)
157 v |= MXC_OTG_UCTRL_OPM_BIT;
159 v &= ~MXC_OTG_UCTRL_OPM_BIT;
160 __raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET);
163 case 1: /* Host 1 Host ULPI */
165 /* The clock for the USBH1 ULPI port will come externally
167 v = __raw_readl(usbother_base + MXC_USB_CTRL_1_OFFSET);
168 __raw_writel(v | MXC_USB_CTRL_UH1_EXT_CLK_EN, usbother_base +
169 MXC_USB_CTRL_1_OFFSET);
172 v = __raw_readl(usbother_base + MXC_USBCTRL_OFFSET);
173 if (flags & MXC_EHCI_POWER_PINS_ENABLED)
174 v &= ~MXC_H1_UCTRL_H1PM_BIT; /* HOST1 power mask used */
176 v |= MXC_H1_UCTRL_H1PM_BIT; /* HOST1 power mask used */
177 __raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET);
179 v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
180 if (flags & MXC_EHCI_POWER_PINS_ENABLED)
181 v &= ~MXC_H1_OC_DIS_BIT; /* OC is used */
183 v |= MXC_H1_OC_DIS_BIT; /* OC is not used */
184 __raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
187 case 2: /* Host 2 ULPI */
188 v = __raw_readl(usbother_base + MXC_USBH2CTRL_OFFSET);
189 if (flags & MXC_EHCI_POWER_PINS_ENABLED)
190 v &= ~MXC_H2_UCTRL_H2PM_BIT; /* HOST2 power mask used */
192 v |= MXC_H2_UCTRL_H2PM_BIT; /* HOST2 power mask used */
194 __raw_writel(v, usbother_base + MXC_USBH2CTRL_OFFSET);
201 void __board_ehci_hcd_postinit(struct usb_ehci *ehci, int port)
205 void board_ehci_hcd_postinit(struct usb_ehci *ehci, int port)
206 __attribute((weak, alias("__board_ehci_hcd_postinit")));
208 int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
210 struct usb_ehci *ehci;
212 struct clkctl *sc_regs = (struct clkctl *)CCM_BASE_ADDR;
215 reg = __raw_readl(&sc_regs->cscmr1) & ~(1 << 26);
216 /* derive USB PHY clock multiplexer from PLL3 */
218 __raw_writel(reg, &sc_regs->cscmr1);
222 enable_usboh3_clk(1);
224 enable_usb_phy1_clk(1);
225 enable_usb_phy2_clk(1);
228 /* Do board specific initialization */
229 board_ehci_hcd_init(CONFIG_MXC_USB_PORT);
231 ehci = (struct usb_ehci *)(OTG_BASE_ADDR +
232 (0x200 * CONFIG_MXC_USB_PORT));
233 *hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
234 *hcor = (struct ehci_hcor *)((uint32_t)*hccr +
235 HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
236 setbits_le32(&ehci->usbmode, CM_HOST);
238 __raw_writel(CONFIG_MXC_USB_PORTSC, &ehci->portsc);
239 setbits_le32(&ehci->portsc, USB_EN);
241 mxc_set_usbcontrol(CONFIG_MXC_USB_PORT, CONFIG_MXC_USB_FLAGS);
244 /* Do board specific post-initialization */
245 board_ehci_hcd_postinit(ehci, CONFIG_MXC_USB_PORT);
250 int ehci_hcd_stop(int index)