2 * Freescale 83xx USB SOC setup code
4 * Copyright (C) 2007 Freescale Semiconductor, Inc.
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
14 #include <linux/stddef.h>
15 #include <linux/kernel.h>
16 #include <linux/errno.h>
21 #include <sysdev/fsl_soc.h>
26 #ifdef CONFIG_PPC_MPC834x
27 int mpc834x_usb_cfg(void)
29 unsigned long sccr, sicrl, sicrh;
31 struct device_node *np = NULL;
32 int port0_is_dr = 0, port1_is_dr = 0;
33 const void *prop, *dr_mode;
35 immap = ioremap(get_immrbase(), 0x1000);
40 /* Note: DR and MPH must use the same clock setting in SCCR */
41 sccr = in_be32(immap + MPC83XX_SCCR_OFFS) & ~MPC83XX_SCCR_USB_MASK;
42 sicrl = in_be32(immap + MPC83XX_SICRL_OFFS) & ~MPC834X_SICRL_USB_MASK;
43 sicrh = in_be32(immap + MPC83XX_SICRH_OFFS) & ~MPC834X_SICRH_USB_UTMI;
45 np = of_find_compatible_node(NULL, NULL, "fsl-usb2-dr");
47 sccr |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */
49 prop = of_get_property(np, "phy_type", NULL);
50 if (prop && (!strcmp(prop, "utmi") ||
51 !strcmp(prop, "utmi_wide"))) {
52 sicrl |= MPC834X_SICRL_USB0 | MPC834X_SICRL_USB1;
53 sicrh |= MPC834X_SICRH_USB_UTMI;
55 } else if (prop && !strcmp(prop, "serial")) {
56 dr_mode = of_get_property(np, "dr_mode", NULL);
57 if (dr_mode && !strcmp(dr_mode, "otg")) {
58 sicrl |= MPC834X_SICRL_USB0 | MPC834X_SICRL_USB1;
61 sicrl |= MPC834X_SICRL_USB0;
63 } else if (prop && !strcmp(prop, "ulpi")) {
64 sicrl |= MPC834X_SICRL_USB0;
66 printk(KERN_WARNING "834x USB PHY type not supported\n");
71 np = of_find_compatible_node(NULL, NULL, "fsl-usb2-mph");
73 sccr |= MPC83XX_SCCR_USB_MPHCM_11; /* 1:3 */
75 prop = of_get_property(np, "port0", NULL);
79 "834x USB port0 can't be used by both DR and MPH!\n");
80 sicrl &= ~MPC834X_SICRL_USB0;
82 prop = of_get_property(np, "port1", NULL);
86 "834x USB port1 can't be used by both DR and MPH!\n");
87 sicrl &= ~MPC834X_SICRL_USB1;
93 out_be32(immap + MPC83XX_SCCR_OFFS, sccr);
94 out_be32(immap + MPC83XX_SICRL_OFFS, sicrl);
95 out_be32(immap + MPC83XX_SICRH_OFFS, sicrh);
100 #endif /* CONFIG_PPC_MPC834x */
102 #ifdef CONFIG_PPC_MPC831x
103 int mpc831x_usb_cfg(void)
106 void __iomem *immap, *usb_regs;
107 struct device_node *np = NULL;
108 struct device_node *immr_node = NULL;
112 #ifdef CONFIG_USB_OTG
116 np = of_find_compatible_node(NULL, NULL, "fsl-usb2-dr");
119 prop = of_get_property(np, "phy_type", NULL);
121 /* Map IMMR space for pin and clock settings */
122 immap = ioremap(get_immrbase(), 0x1000);
128 /* Configure clock */
129 immr_node = of_get_parent(np);
130 if (immr_node && of_device_is_compatible(immr_node, "fsl,mpc8315-immr"))
131 clrsetbits_be32(immap + MPC83XX_SCCR_OFFS,
132 MPC8315_SCCR_USB_MASK,
133 MPC8315_SCCR_USB_DRCM_01);
135 clrsetbits_be32(immap + MPC83XX_SCCR_OFFS,
136 MPC83XX_SCCR_USB_MASK,
137 MPC83XX_SCCR_USB_DRCM_11);
139 /* Configure pin mux for ULPI. There is no pin mux for UTMI */
140 if (prop && !strcmp(prop, "ulpi")) {
141 if (of_device_is_compatible(immr_node, "fsl,mpc8315-immr")) {
142 clrsetbits_be32(immap + MPC83XX_SICRL_OFFS,
143 MPC8315_SICRL_USB_MASK,
144 MPC8315_SICRL_USB_ULPI);
145 clrsetbits_be32(immap + MPC83XX_SICRH_OFFS,
146 MPC8315_SICRH_USB_MASK,
147 MPC8315_SICRH_USB_ULPI);
149 clrsetbits_be32(immap + MPC83XX_SICRL_OFFS,
150 MPC831X_SICRL_USB_MASK,
151 MPC831X_SICRL_USB_ULPI);
152 clrsetbits_be32(immap + MPC83XX_SICRH_OFFS,
153 MPC831X_SICRH_USB_MASK,
154 MPC831X_SICRH_USB_ULPI);
161 of_node_put(immr_node);
163 /* Map USB SOC space */
164 ret = of_address_to_resource(np, 0, &res);
169 usb_regs = ioremap(res.start, res.end - res.start + 1);
171 /* Using on-chip PHY */
172 if (prop && (!strcmp(prop, "utmi_wide") ||
173 !strcmp(prop, "utmi"))) {
176 if (of_device_is_compatible(immr_node, "fsl,mpc8315-immr"))
177 refsel = CONTROL_REFSEL_24MHZ;
179 refsel = CONTROL_REFSEL_48MHZ;
180 /* Set UTMI_PHY_EN and REFSEL */
181 out_be32(usb_regs + FSL_USB2_CONTROL_OFFS,
182 CONTROL_UTMI_PHY_EN | refsel);
183 /* Using external UPLI PHY */
184 } else if (prop && !strcmp(prop, "ulpi")) {
185 /* Set PHY_CLK_SEL to ULPI */
186 temp = CONTROL_PHY_CLK_SEL_ULPI;
187 #ifdef CONFIG_USB_OTG
189 dr_mode = of_get_property(np, "dr_mode", NULL);
190 if (dr_mode && !strcmp(dr_mode, "otg"))
191 temp |= CONTROL_OTG_PORT;
192 #endif /* CONFIG_USB_OTG */
193 out_be32(usb_regs + FSL_USB2_CONTROL_OFFS, temp);
195 printk(KERN_WARNING "831x USB PHY type not supported\n");
203 #endif /* CONFIG_PPC_MPC831x */
205 #ifdef CONFIG_PPC_MPC837x
206 int mpc837x_usb_cfg(void)
209 struct device_node *np = NULL;
213 np = of_find_compatible_node(NULL, NULL, "fsl-usb2-dr");
214 if (!np || !of_device_is_available(np))
216 prop = of_get_property(np, "phy_type", NULL);
218 if (!prop || (strcmp(prop, "ulpi") && strcmp(prop, "serial"))) {
219 printk(KERN_WARNING "837x USB PHY type not supported\n");
224 /* Map IMMR space for pin and clock settings */
225 immap = ioremap(get_immrbase(), 0x1000);
231 /* Configure clock */
232 clrsetbits_be32(immap + MPC83XX_SCCR_OFFS, MPC837X_SCCR_USB_DRCM_11,
233 MPC837X_SCCR_USB_DRCM_11);
235 /* Configure pin mux for ULPI/serial */
236 clrsetbits_be32(immap + MPC83XX_SICRL_OFFS, MPC837X_SICRL_USB_MASK,
237 MPC837X_SICRL_USB_ULPI);
243 #endif /* CONFIG_PPC_MPC837x */