2 * arch/powerpc/platforms/83xx/mpc834x_mds.c
4 * MPC834x MDS board specific routines
6 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
14 #include <linux/stddef.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/errno.h>
18 #include <linux/reboot.h>
19 #include <linux/pci.h>
20 #include <linux/kdev_t.h>
21 #include <linux/major.h>
22 #include <linux/console.h>
23 #include <linux/delay.h>
24 #include <linux/seq_file.h>
25 #include <linux/root_dev.h>
27 #include <asm/system.h>
28 #include <asm/atomic.h>
31 #include <asm/machdep.h>
33 #include <asm/bootinfo.h>
37 #include <sysdev/fsl_soc.h>
41 #define BCSR5_INT_USB 0x02
42 /* Note: This is only for PB, not for PB+PIB
43 * On PB only port0 is connected using ULPI */
44 static int mpc834x_usb_cfg(void)
46 unsigned long sccr, sicrl;
48 void __iomem *bcsr_regs = NULL;
50 struct device_node *np = NULL;
53 if ((np = of_find_compatible_node(NULL, "usb", "fsl-usb2-dr")) != NULL)
55 if ((np = of_find_compatible_node(NULL, "usb", "fsl-usb2-mph")) != NULL){
58 "There is only one USB port on PB board! \n");
60 } else if (!port0_is_dr)
61 /* No usb port enabled */
65 immap = ioremap(get_immrbase(), 0x1000);
70 sccr = in_be32(immap + MPC83XX_SCCR_OFFS);
72 sccr |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */
74 sccr |= MPC83XX_SCCR_USB_MPHCM_11; /* 1:3 */
75 out_be32(immap + MPC83XX_SCCR_OFFS, sccr);
78 sicrl = in_be32(immap + MPC83XX_SICRL_OFFS);
81 sicrl |= MPC83XX_SICRL_USB0;
83 sicrl &= ~(MPC83XX_SICRL_USB0);
84 out_be32(immap + MPC83XX_SICRL_OFFS, sicrl);
89 np = of_find_node_by_name(NULL, "bcsr");
93 of_address_to_resource(np, 0, &res);
94 bcsr_regs = ioremap(res.start, res.end - res.start + 1);
101 * if Processor Board is plugged into PIB board,
102 * force to use the PHY on Processor Board
104 bcsr5 = in_8(bcsr_regs + 5);
105 if (!(bcsr5 & BCSR5_INT_USB))
106 out_8(bcsr_regs + 5, (bcsr5 | BCSR5_INT_USB));
111 /* ************************************************************************
113 * Setup the architecture
116 static void __init mpc834x_mds_setup_arch(void)
119 struct device_node *np;
123 ppc_md.progress("mpc834x_mds_setup_arch()", 0);
126 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
127 mpc83xx_add_bridge(np);
129 ppc_md.pci_exclude_device = mpc83xx_exclude_device;
135 static void __init mpc834x_mds_init_IRQ(void)
137 struct device_node *np;
139 np = of_find_node_by_type(NULL, "ipic");
145 /* Initialize the default interrupt mapping priorities,
146 * in case the boot rom changed something on us.
148 ipic_set_default_priority();
151 #if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374)
152 extern ulong ds1374_get_rtc_time(void);
153 extern int ds1374_set_rtc_time(ulong);
155 static int __init mpc834x_rtc_hookup(void)
159 if (!machine_is(mpc834x_mds))
162 ppc_md.get_rtc_time = ds1374_get_rtc_time;
163 ppc_md.set_rtc_time = ds1374_set_rtc_time;
166 tv.tv_sec = (ppc_md.get_rtc_time) ();
167 do_settimeofday(&tv);
172 late_initcall(mpc834x_rtc_hookup);
176 * Called very early, MMU is off, device-tree isn't unflattened
178 static int __init mpc834x_mds_probe(void)
180 unsigned long root = of_get_flat_dt_root();
182 return of_flat_dt_is_compatible(root, "MPC834xMDS");
185 define_machine(mpc834x_mds) {
186 .name = "MPC834x MDS",
187 .probe = mpc834x_mds_probe,
188 .setup_arch = mpc834x_mds_setup_arch,
189 .init_IRQ = mpc834x_mds_init_IRQ,
190 .get_irq = ipic_get_irq,
191 .restart = mpc83xx_restart,
192 .time_init = mpc83xx_time_init,
193 .calibrate_decr = generic_calibrate_decr,
194 .progress = udbg_progress,