1/*
2 * Platform setup for the Embedded Planet EP88xC board
3 *
4 * Author: Scott Wood <scottwood@freescale.com>
5 * Copyright 2007 Freescale Semiconductor, Inc.
6 *
7 * This file is licensed under the terms of the GNU General Public License
8 * version 2. This program is licensed "as is" without any warranty of any
9 * kind, whether express or implied.
10 */
11
12#include <linux/init.h>
13#include <linux/of_address.h>
14#include <linux/of_fdt.h>
15#include <linux/of_platform.h>
16
17#include <asm/machdep.h>
18#include <asm/io.h>
19#include <asm/udbg.h>
20#include <asm/cpm1.h>
21
22#include "mpc8xx.h"
23
24struct cpm_pin {
25	int port, pin, flags;
26};
27
28static struct cpm_pin ep88xc_pins[] = {
29	/* SMC1 */
30	{1, 24, CPM_PIN_INPUT}, /* RX */
31	{1, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
32
33	/* SCC2 */
34	{0, 12, CPM_PIN_INPUT}, /* TX */
35	{0, 13, CPM_PIN_INPUT}, /* RX */
36	{2, 8, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CD */
37	{2, 9, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CTS */
38	{2, 14, CPM_PIN_INPUT}, /* RTS */
39
40	/* MII1 */
41	{0, 0, CPM_PIN_INPUT},
42	{0, 1, CPM_PIN_INPUT},
43	{0, 2, CPM_PIN_INPUT},
44	{0, 3, CPM_PIN_INPUT},
45	{0, 4, CPM_PIN_OUTPUT},
46	{0, 10, CPM_PIN_OUTPUT},
47	{0, 11, CPM_PIN_OUTPUT},
48	{1, 19, CPM_PIN_INPUT},
49	{1, 31, CPM_PIN_INPUT},
50	{2, 12, CPM_PIN_INPUT},
51	{2, 13, CPM_PIN_INPUT},
52	{3, 8, CPM_PIN_INPUT},
53	{4, 30, CPM_PIN_OUTPUT},
54	{4, 31, CPM_PIN_OUTPUT},
55
56	/* MII2 */
57	{4, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
58	{4, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
59	{4, 16, CPM_PIN_OUTPUT},
60	{4, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
61	{4, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
62	{4, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
63	{4, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
64	{4, 21, CPM_PIN_OUTPUT},
65	{4, 22, CPM_PIN_OUTPUT},
66	{4, 23, CPM_PIN_OUTPUT},
67	{4, 24, CPM_PIN_OUTPUT},
68	{4, 25, CPM_PIN_OUTPUT},
69	{4, 26, CPM_PIN_OUTPUT},
70	{4, 27, CPM_PIN_OUTPUT},
71	{4, 28, CPM_PIN_OUTPUT},
72	{4, 29, CPM_PIN_OUTPUT},
73
74	/* USB */
75	{0, 6, CPM_PIN_INPUT},  /* CLK2 */
76	{0, 14, CPM_PIN_INPUT}, /* USBOE */
77	{0, 15, CPM_PIN_INPUT}, /* USBRXD */
78	{2, 6, CPM_PIN_OUTPUT}, /* USBTXN */
79	{2, 7, CPM_PIN_OUTPUT}, /* USBTXP */
80	{2, 10, CPM_PIN_INPUT}, /* USBRXN */
81	{2, 11, CPM_PIN_INPUT}, /* USBRXP */
82
83	/* Misc */
84	{1, 26, CPM_PIN_INPUT}, /* BRGO2 */
85	{1, 27, CPM_PIN_INPUT}, /* BRGO1 */
86};
87
88static void __init init_ioports(void)
89{
90	int i;
91
92	for (i = 0; i < ARRAY_SIZE(ep88xc_pins); i++) {
93		struct cpm_pin *pin = &ep88xc_pins[i];
94		cpm1_set_pin(pin->port, pin->pin, pin->flags);
95	}
96
97	cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
98	cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_TX); /* USB */
99	cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX);
100	cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
101	cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
102}
103
104static u8 __iomem *ep88xc_bcsr;
105
106#define BCSR7_SCC2_ENABLE 0x10
107
108#define BCSR8_PHY1_ENABLE 0x80
109#define BCSR8_PHY1_POWER  0x40
110#define BCSR8_PHY2_ENABLE 0x20
111#define BCSR8_PHY2_POWER  0x10
112
113#define BCSR9_USB_ENABLE  0x80
114#define BCSR9_USB_POWER   0x40
115#define BCSR9_USB_HOST    0x20
116#define BCSR9_USB_FULL_SPEED_TARGET 0x10
117
118static void __init ep88xc_setup_arch(void)
119{
120	struct device_node *np;
121
122	cpm_reset();
123	init_ioports();
124
125	np = of_find_compatible_node(NULL, NULL, "fsl,ep88xc-bcsr");
126	if (!np) {
127		printk(KERN_CRIT "Could not find fsl,ep88xc-bcsr node\n");
128		return;
129	}
130
131	ep88xc_bcsr = of_iomap(np, 0);
132	of_node_put(np);
133
134	if (!ep88xc_bcsr) {
135		printk(KERN_CRIT "Could not remap BCSR\n");
136		return;
137	}
138
139	setbits8(&ep88xc_bcsr[7], BCSR7_SCC2_ENABLE);
140	setbits8(&ep88xc_bcsr[8], BCSR8_PHY1_ENABLE | BCSR8_PHY1_POWER |
141	                          BCSR8_PHY2_ENABLE | BCSR8_PHY2_POWER);
142}
143
144static int __init ep88xc_probe(void)
145{
146	unsigned long root = of_get_flat_dt_root();
147	return of_flat_dt_is_compatible(root, "fsl,ep88xc");
148}
149
150static const struct of_device_id of_bus_ids[] __initconst = {
151	{ .name = "soc", },
152	{ .name = "cpm", },
153	{ .name = "localbus", },
154	{},
155};
156
157static int __init declare_of_platform_devices(void)
158{
159	/* Publish the QE devices */
160	of_platform_bus_probe(NULL, of_bus_ids, NULL);
161
162	return 0;
163}
164machine_device_initcall(ep88xc, declare_of_platform_devices);
165
166define_machine(ep88xc) {
167	.name = "Embedded Planet EP88xC",
168	.probe = ep88xc_probe,
169	.setup_arch = ep88xc_setup_arch,
170	.init_IRQ = mpc8xx_pics_init,
171	.get_irq	= mpc8xx_get_irq,
172	.restart = mpc8xx_restart,
173	.calibrate_decr = mpc8xx_calibrate_decr,
174	.set_rtc_time = mpc8xx_set_rtc_time,
175	.get_rtc_time = mpc8xx_get_rtc_time,
176	.progress = udbg_progress,
177};
178