[POWERPC] 83xx: configure USB clock for MPC8315E
[linux-2.6] / arch / powerpc / platforms / 83xx / sbc834x.c
1 /*
2  * arch/powerpc/platforms/83xx/sbc834x.c
3  *
4  * Wind River SBC834x board specific routines
5  *
6  * By Paul Gortmaker (see MAINTAINERS for contact information)
7  *
8  * Based largely on the mpc834x_mds.c support by Kumar Gala.
9  *
10  * This program is free software; you can redistribute  it and/or modify it
11  * under  the terms of  the GNU General  Public License as published by the
12  * Free Software Foundation;  either version 2 of the  License, or (at your
13  * option) any later version.
14  */
15
16 #include <linux/stddef.h>
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/errno.h>
20 #include <linux/reboot.h>
21 #include <linux/pci.h>
22 #include <linux/kdev_t.h>
23 #include <linux/major.h>
24 #include <linux/console.h>
25 #include <linux/delay.h>
26 #include <linux/seq_file.h>
27 #include <linux/root_dev.h>
28 #include <linux/of_platform.h>
29
30 #include <asm/system.h>
31 #include <asm/atomic.h>
32 #include <asm/time.h>
33 #include <asm/io.h>
34 #include <asm/machdep.h>
35 #include <asm/ipic.h>
36 #include <asm/irq.h>
37 #include <asm/prom.h>
38 #include <asm/udbg.h>
39 #include <sysdev/fsl_soc.h>
40
41 #include "mpc83xx.h"
42
43 /* ************************************************************************
44  *
45  * Setup the architecture
46  *
47  */
48 static void __init sbc834x_setup_arch(void)
49 {
50 #ifdef CONFIG_PCI
51         struct device_node *np;
52 #endif
53
54         if (ppc_md.progress)
55                 ppc_md.progress("sbc834x_setup_arch()", 0);
56
57 #ifdef CONFIG_PCI
58         for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
59                 mpc83xx_add_bridge(np);
60 #endif
61
62 }
63
64 static void __init sbc834x_init_IRQ(void)
65 {
66         struct device_node *np;
67
68         np = of_find_node_by_type(NULL, "ipic");
69         if (!np)
70                 return;
71
72         ipic_init(np, 0);
73
74         /* Initialize the default interrupt mapping priorities,
75          * in case the boot rom changed something on us.
76          */
77         ipic_set_default_priority();
78
79         of_node_put(np);
80 }
81
82 static struct __initdata of_device_id sbc834x_ids[] = {
83         { .type = "soc", },
84         { .compatible = "soc", },
85         {},
86 };
87
88 static int __init sbc834x_declare_of_platform_devices(void)
89 {
90         of_platform_bus_probe(NULL, sbc834x_ids, NULL);
91         return 0;
92 }
93 machine_device_initcall(sbc834x, sbc834x_declare_of_platform_devices);
94
95 /*
96  * Called very early, MMU is off, device-tree isn't unflattened
97  */
98 static int __init sbc834x_probe(void)
99 {
100         unsigned long root = of_get_flat_dt_root();
101
102         return of_flat_dt_is_compatible(root, "SBC834x");
103 }
104
105 define_machine(sbc834x) {
106         .name                   = "SBC834x",
107         .probe                  = sbc834x_probe,
108         .setup_arch             = sbc834x_setup_arch,
109         .init_IRQ               = sbc834x_init_IRQ,
110         .get_irq                = ipic_get_irq,
111         .restart                = mpc83xx_restart,
112         .time_init              = mpc83xx_time_init,
113         .calibrate_decr         = generic_calibrate_decr,
114         .progress               = udbg_progress,
115 };