1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/*
* This contain platform specific code for APM PPC460EX based Canyonlands
* board.
*
* Copyright (c) 2010, Applied Micro Circuits Corporation
* Author: Rupjyoti Sarmah <rsarmah@apm.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/pci-bridge.h>
#include <asm/ppc4xx.h>
#include <asm/udbg.h>
#include <asm/uic.h>
#include <linux/of_platform.h>
#include <linux/delay.h>
#include "44x.h"
#define BCSR_USB_EN 0x11
static const struct of_device_id ppc460ex_of_bus[] __initconst = {
{ .compatible = "ibm,plb4", },
{ .compatible = "ibm,opb", },
{ .compatible = "ibm,ebc", },
{ .compatible = "simple-bus", },
{},
};
static int __init ppc460ex_device_probe(void)
{
of_platform_bus_probe(NULL, ppc460ex_of_bus, NULL);
return 0;
}
machine_device_initcall(canyonlands, ppc460ex_device_probe);
/* Using this code only for the Canyonlands board. */
static int __init ppc460ex_probe(void)
{
if (of_machine_is_compatible("amcc,canyonlands")) {
pci_set_flags(PCI_REASSIGN_ALL_RSRC);
return 1;
}
return 0;
}
/* USB PHY fixup code on Canyonlands kit. */
static int __init ppc460ex_canyonlands_fixup(void)
{
u8 __iomem *bcsr ;
void __iomem *vaddr;
struct device_node *np;
int ret = 0;
np = of_find_compatible_node(NULL, NULL, "amcc,ppc460ex-bcsr");
if (!np) {
printk(KERN_ERR "failed did not find amcc, ppc460ex bcsr node\n");
return -ENODEV;
}
bcsr = of_iomap(np, 0);
of_node_put(np);
if (!bcsr) {
printk(KERN_CRIT "Could not remap bcsr\n");
ret = -ENODEV;
goto err_bcsr;
}
np = of_find_compatible_node(NULL, NULL, "ibm,ppc4xx-gpio");
if (!np) {
printk(KERN_ERR "failed did not find ibm,ppc4xx-gpio node\n");
return -ENODEV;
}
vaddr = of_iomap(np, 0);
of_node_put(np);
if (!vaddr) {
printk(KERN_CRIT "Could not get gpio node address\n");
ret = -ENODEV;
goto err_gpio;
}
/* Disable USB, through the BCSR7 bits */
setbits8(&bcsr[7], BCSR_USB_EN);
/* Wait for a while after reset */
msleep(100);
/* Enable USB here */
clrbits8(&bcsr[7], BCSR_USB_EN);
/*
* Configure multiplexed gpio16 and gpio19 as alternate1 output
* source after USB reset. In this configuration gpio16 will be
* USB2HStop and gpio19 will be USB2DStop. For more details refer to
* table 34-7 of PPC460EX user manual.
*/
setbits32((vaddr + GPIO0_OSRH), 0x42000000);
setbits32((vaddr + GPIO0_TSRH), 0x42000000);
err_gpio:
iounmap(vaddr);
err_bcsr:
iounmap(bcsr);
return ret;
}
machine_device_initcall(canyonlands, ppc460ex_canyonlands_fixup);
define_machine(canyonlands) {
.name = "Canyonlands",
.probe = ppc460ex_probe,
.progress = udbg_progress,
.init_IRQ = uic_init_tree,
.get_irq = uic_get_irq,
.restart = ppc4xx_reset_system,
.calibrate_decr = generic_calibrate_decr,
};
|
