summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/8xx/ep88xc.c
blob: 2bedeb7d5f8f143b97183cb8cb725911b449ca4a (plain)
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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
/*
 * Platform setup for the Embedded Planet EP88xC board
 *
 * Author: Scott Wood <scottwood@freescale.com>
 * Copyright 2007 Freescale Semiconductor, Inc.
 *
 * This file is licensed under the terms of the GNU General Public License
 * version 2. This program is licensed "as is" without any warranty of any
 * kind, whether express or implied.
 */

#include <linux/init.h>
#include <linux/of_address.h>
#include <linux/of_fdt.h>
#include <linux/of_platform.h>

#include <asm/machdep.h>
#include <asm/io.h>
#include <asm/udbg.h>
#include <asm/cpm1.h>

#include "mpc8xx.h"

struct cpm_pin {
	int port, pin, flags;
};

static struct cpm_pin ep88xc_pins[] = {
	/* SMC1 */
	{1, 24, CPM_PIN_INPUT}, /* RX */
	{1, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */

	/* SCC2 */
	{0, 12, CPM_PIN_INPUT}, /* TX */
	{0, 13, CPM_PIN_INPUT}, /* RX */
	{2, 8, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CD */
	{2, 9, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CTS */
	{2, 14, CPM_PIN_INPUT}, /* RTS */

	/* MII1 */
	{0, 0, CPM_PIN_INPUT},
	{0, 1, CPM_PIN_INPUT},
	{0, 2, CPM_PIN_INPUT},
	{0, 3, CPM_PIN_INPUT},
	{0, 4, CPM_PIN_OUTPUT},
	{0, 10, CPM_PIN_OUTPUT},
	{0, 11, CPM_PIN_OUTPUT},
	{1, 19, CPM_PIN_INPUT},
	{1, 31, CPM_PIN_INPUT},
	{2, 12, CPM_PIN_INPUT},
	{2, 13, CPM_PIN_INPUT},
	{3, 8, CPM_PIN_INPUT},
	{4, 30, CPM_PIN_OUTPUT},
	{4, 31, CPM_PIN_OUTPUT},

	/* MII2 */
	{4, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
	{4, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
	{4, 16, CPM_PIN_OUTPUT},
	{4, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
	{4, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
	{4, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
	{4, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
	{4, 21, CPM_PIN_OUTPUT},
	{4, 22, CPM_PIN_OUTPUT},
	{4, 23, CPM_PIN_OUTPUT},
	{4, 24, CPM_PIN_OUTPUT},
	{4, 25, CPM_PIN_OUTPUT},
	{4, 26, CPM_PIN_OUTPUT},
	{4, 27, CPM_PIN_OUTPUT},
	{4, 28, CPM_PIN_OUTPUT},
	{4, 29, CPM_PIN_OUTPUT},

	/* USB */
	{0, 6, CPM_PIN_INPUT},  /* CLK2 */
	{0, 14, CPM_PIN_INPUT}, /* USBOE */
	{0, 15, CPM_PIN_INPUT}, /* USBRXD */
	{2, 6, CPM_PIN_OUTPUT}, /* USBTXN */
	{2, 7, CPM_PIN_OUTPUT}, /* USBTXP */
	{2, 10, CPM_PIN_INPUT}, /* USBRXN */
	{2, 11, CPM_PIN_INPUT}, /* USBRXP */

	/* Misc */
	{1, 26, CPM_PIN_INPUT}, /* BRGO2 */
	{1, 27, CPM_PIN_INPUT}, /* BRGO1 */
};

static void __init init_ioports(void)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(ep88xc_pins); i++) {
		struct cpm_pin *pin = &ep88xc_pins[i];
		cpm1_set_pin(pin->port, pin->pin, pin->flags);
	}

	cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
	cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_TX); /* USB */
	cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX);
	cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
	cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
}

static u8 __iomem *ep88xc_bcsr;

#define BCSR7_SCC2_ENABLE 0x10

#define BCSR8_PHY1_ENABLE 0x80
#define BCSR8_PHY1_POWER  0x40
#define BCSR8_PHY2_ENABLE 0x20
#define BCSR8_PHY2_POWER  0x10

#define BCSR9_USB_ENABLE  0x80
#define BCSR9_USB_POWER   0x40
#define BCSR9_USB_HOST    0x20
#define BCSR9_USB_FULL_SPEED_TARGET 0x10

static void __init ep88xc_setup_arch(void)
{
	struct device_node *np;

	cpm_reset();
	init_ioports();

	np = of_find_compatible_node(NULL, NULL, "fsl,ep88xc-bcsr");
	if (!np) {
		printk(KERN_CRIT "Could not find fsl,ep88xc-bcsr node\n");
		return;
	}

	ep88xc_bcsr = of_iomap(np, 0);
	of_node_put(np);

	if (!ep88xc_bcsr) {
		printk(KERN_CRIT "Could not remap BCSR\n");
		return;
	}

	setbits8(&ep88xc_bcsr[7], BCSR7_SCC2_ENABLE);
	setbits8(&ep88xc_bcsr[8], BCSR8_PHY1_ENABLE | BCSR8_PHY1_POWER |
	                          BCSR8_PHY2_ENABLE | BCSR8_PHY2_POWER);
}

static int __init ep88xc_probe(void)
{
	unsigned long root = of_get_flat_dt_root();
	return of_flat_dt_is_compatible(root, "fsl,ep88xc");
}

static const struct of_device_id of_bus_ids[] __initconst = {
	{ .name = "soc", },
	{ .name = "cpm", },
	{ .name = "localbus", },
	{},
};

static int __init declare_of_platform_devices(void)
{
	/* Publish the QE devices */
	of_platform_bus_probe(NULL, of_bus_ids, NULL);

	return 0;
}
machine_device_initcall(ep88xc, declare_of_platform_devices);

define_machine(ep88xc) {
	.name = "Embedded Planet EP88xC",
	.probe = ep88xc_probe,
	.setup_arch = ep88xc_setup_arch,
	.init_IRQ = mpc8xx_pics_init,
	.get_irq	= mpc8xx_get_irq,
	.restart = mpc8xx_restart,
	.calibrate_decr = mpc8xx_calibrate_decr,
	.set_rtc_time = mpc8xx_set_rtc_time,
	.get_rtc_time = mpc8xx_get_rtc_time,
	.progress = udbg_progress,
};