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>
20 #include <sysdev/fsl_soc.h>
26 int mpc834x_usb_cfg(void)
28 unsigned long sccr, sicrl, sicrh;
30 struct device_node *np = NULL;
31 int port0_is_dr = 0, port1_is_dr = 0;
32 const void *prop, *dr_mode;
34 immap = ioremap(get_immrbase(), 0x1000);
39 /* Note: DR and MPH must use the same clock setting in SCCR */
40 sccr = in_be32(immap + MPC83XX_SCCR_OFFS) & ~MPC83XX_SCCR_USB_MASK;
41 sicrl = in_be32(immap + MPC83XX_SICRL_OFFS) & ~MPC834X_SICRL_USB_MASK;
42 sicrh = in_be32(immap + MPC83XX_SICRH_OFFS) & ~MPC834X_SICRH_USB_UTMI;
44 np = of_find_compatible_node(NULL, "usb", "fsl-usb2-dr");
46 sccr |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */
48 prop = of_get_property(np, "phy_type", NULL);
49 if (prop && (!strcmp(prop, "utmi") ||
50 !strcmp(prop, "utmi_wide"))) {
51 sicrl |= MPC834X_SICRL_USB0 | MPC834X_SICRL_USB1;
52 sicrh |= MPC834X_SICRH_USB_UTMI;
54 } else if (prop && !strcmp(prop, "serial")) {
55 dr_mode = of_get_property(np, "dr_mode", NULL);
56 if (dr_mode && !strcmp(dr_mode, "otg")) {
57 sicrl |= MPC834X_SICRL_USB0 | MPC834X_SICRL_USB1;
60 sicrl |= MPC834X_SICRL_USB0;
62 } else if (prop && !strcmp(prop, "ulpi")) {
63 sicrl |= MPC834X_SICRL_USB0;
65 printk(KERN_WARNING "834x USB PHY type not supported\n");
70 np = of_find_compatible_node(NULL, "usb", "fsl-usb2-mph");
72 sccr |= MPC83XX_SCCR_USB_MPHCM_11; /* 1:3 */
74 prop = of_get_property(np, "port0", NULL);
78 "834x USB port0 can't be used by both DR and MPH!\n");
79 sicrl &= ~MPC834X_SICRL_USB0;
81 prop = of_get_property(np, "port1", NULL);
85 "834x USB port1 can't be used by both DR and MPH!\n");
86 sicrl &= ~MPC834X_SICRL_USB1;
92 out_be32(immap + MPC83XX_SCCR_OFFS, sccr);
93 out_be32(immap + MPC83XX_SICRL_OFFS, sicrl);
94 out_be32(immap + MPC83XX_SICRH_OFFS, sicrh);
99 #endif /* CONFIG_MPC834x */
101 #ifdef CONFIG_PPC_MPC831x
102 int mpc831x_usb_cfg(void)
105 void __iomem *immap, *usb_regs;
106 struct device_node *np = NULL;
110 #ifdef CONFIG_USB_OTG
114 np = of_find_compatible_node(NULL, "usb", "fsl-usb2-dr");
117 prop = of_get_property(np, "phy_type", NULL);
119 /* Map IMMR space for pin and clock settings */
120 immap = ioremap(get_immrbase(), 0x1000);
126 /* Configure clock */
127 temp = in_be32(immap + MPC83XX_SCCR_OFFS);
128 temp &= ~MPC83XX_SCCR_USB_MASK;
129 temp |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */
130 out_be32(immap + MPC83XX_SCCR_OFFS, temp);
132 /* Configure pin mux for ULPI. There is no pin mux for UTMI */
133 if (!strcmp(prop, "ulpi")) {
134 temp = in_be32(immap + MPC83XX_SICRL_OFFS);
135 temp &= ~MPC831X_SICRL_USB_MASK;
136 temp |= MPC831X_SICRL_USB_ULPI;
137 out_be32(immap + MPC83XX_SICRL_OFFS, temp);
139 temp = in_be32(immap + MPC83XX_SICRH_OFFS);
140 temp &= ~MPC831X_SICRH_USB_MASK;
141 temp |= MPC831X_SICRH_USB_ULPI;
142 out_be32(immap + MPC83XX_SICRH_OFFS, temp);
147 /* Map USB SOC space */
148 ret = of_address_to_resource(np, 0, &res);
153 usb_regs = ioremap(res.start, res.end - res.start + 1);
155 /* Using on-chip PHY */
156 if (!strcmp(prop, "utmi_wide") ||
157 !strcmp(prop, "utmi")) {
158 /* Set UTMI_PHY_EN, REFSEL to 48MHZ */
159 out_be32(usb_regs + FSL_USB2_CONTROL_OFFS,
160 CONTROL_UTMI_PHY_EN | CONTROL_REFSEL_48MHZ);
161 /* Using external UPLI PHY */
162 } else if (!strcmp(prop, "ulpi")) {
163 /* Set PHY_CLK_SEL to ULPI */
164 temp = CONTROL_PHY_CLK_SEL_ULPI;
165 #ifdef CONFIG_USB_OTG
167 dr_mode = of_get_property(np, "dr_mode", NULL);
168 if (dr_mode && !strcmp(dr_mode, "otg"))
169 temp |= CONTROL_OTG_PORT;
170 #endif /* CONFIG_USB_OTG */
171 out_be32(usb_regs + FSL_USB2_CONTROL_OFFS, temp);
173 printk(KERN_WARNING "831x USB PHY type not supported\n");
181 #endif /* CONFIG_PPC_MPC831x */