1/*
2 * Platform setup for the MPC8xx based boards from TQM.
3 *
4 * Heiko Schocher <hs@denx.de>
5 * Copyright 2010 DENX Software Engineering GmbH
6 *
7 * based on:
8 * Vitaly Bordug <vbordug@ru.mvista.com>
9 *
10 * Copyright 2005 MontaVista Software Inc.
11 *
12 * Heavily modified by Scott Wood <scottwood@freescale.com>
13 * Copyright 2007 Freescale Semiconductor, Inc.
14 *
15 * This file is licensed under the terms of the GNU General Public License
16 * version 2. This program is licensed "as is" without any warranty of any
17 * kind, whether express or implied.
18 */
19
20#include <linux/init.h>
21#include <linux/param.h>
22#include <linux/string.h>
23#include <linux/ioport.h>
24#include <linux/device.h>
25#include <linux/delay.h>
26
27#include <linux/fs_enet_pd.h>
28#include <linux/fs_uart_pd.h>
29#include <linux/fsl_devices.h>
30#include <linux/mii.h>
31#include <linux/of_fdt.h>
32#include <linux/of_platform.h>
33
34#include <asm/delay.h>
35#include <asm/io.h>
36#include <asm/machdep.h>
37#include <asm/page.h>
38#include <asm/processor.h>
39#include <asm/time.h>
40#include <asm/8xx_immap.h>
41#include <asm/cpm1.h>
42#include <asm/fs_pd.h>
43#include <asm/udbg.h>
44
45#include "mpc8xx.h"
46
47struct cpm_pin {
48	int port, pin, flags;
49};
50
51static struct cpm_pin tqm8xx_pins[] __initdata = {
52	/* SMC1 */
53	{CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
54	{CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
55
56	/* SCC1 */
57	{CPM_PORTA, 5, CPM_PIN_INPUT}, /* CLK1 */
58	{CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */
59	{CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */
60	{CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */
61	{CPM_PORTC, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
62	{CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO},
63	{CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO},
64};
65
66static struct cpm_pin tqm8xx_fec_pins[] __initdata = {
67	/* MII */
68	{CPM_PORTD, 3, CPM_PIN_OUTPUT},
69	{CPM_PORTD, 4, CPM_PIN_OUTPUT},
70	{CPM_PORTD, 5, CPM_PIN_OUTPUT},
71	{CPM_PORTD, 6, CPM_PIN_OUTPUT},
72	{CPM_PORTD, 7, CPM_PIN_OUTPUT},
73	{CPM_PORTD, 8, CPM_PIN_OUTPUT},
74	{CPM_PORTD, 9, CPM_PIN_OUTPUT},
75	{CPM_PORTD, 10, CPM_PIN_OUTPUT},
76	{CPM_PORTD, 11, CPM_PIN_OUTPUT},
77	{CPM_PORTD, 12, CPM_PIN_OUTPUT},
78	{CPM_PORTD, 13, CPM_PIN_OUTPUT},
79	{CPM_PORTD, 14, CPM_PIN_OUTPUT},
80	{CPM_PORTD, 15, CPM_PIN_OUTPUT},
81};
82
83static void __init init_pins(int n, struct cpm_pin *pin)
84{
85	int i;
86
87	for (i = 0; i < n; i++) {
88		cpm1_set_pin(pin->port, pin->pin, pin->flags);
89		pin++;
90	}
91}
92
93static void __init init_ioports(void)
94{
95	struct device_node *dnode;
96	struct property *prop;
97	int	len;
98
99	init_pins(ARRAY_SIZE(tqm8xx_pins), &tqm8xx_pins[0]);
100
101	cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
102
103	dnode = of_find_node_by_name(NULL, "aliases");
104	if (dnode == NULL)
105		return;
106	prop = of_find_property(dnode, "ethernet1", &len);
107	if (prop == NULL)
108		return;
109
110	/* init FEC pins */
111	init_pins(ARRAY_SIZE(tqm8xx_fec_pins), &tqm8xx_fec_pins[0]);
112}
113
114static void __init tqm8xx_setup_arch(void)
115{
116	cpm_reset();
117	init_ioports();
118}
119
120static int __init tqm8xx_probe(void)
121{
122	unsigned long node = of_get_flat_dt_root();
123
124	return of_flat_dt_is_compatible(node, "tqc,tqm8xx");
125}
126
127static const struct of_device_id of_bus_ids[] __initconst = {
128	{ .name = "soc", },
129	{ .name = "cpm", },
130	{ .name = "localbus", },
131	{ .compatible = "simple-bus" },
132	{},
133};
134
135static int __init declare_of_platform_devices(void)
136{
137	of_platform_bus_probe(NULL, of_bus_ids, NULL);
138
139	return 0;
140}
141machine_device_initcall(tqm8xx, declare_of_platform_devices);
142
143define_machine(tqm8xx) {
144	.name			= "TQM8xx",
145	.probe			= tqm8xx_probe,
146	.setup_arch		= tqm8xx_setup_arch,
147	.init_IRQ		= mpc8xx_pics_init,
148	.get_irq		= mpc8xx_get_irq,
149	.restart		= mpc8xx_restart,
150	.calibrate_decr		= mpc8xx_calibrate_decr,
151	.set_rtc_time		= mpc8xx_set_rtc_time,
152	.get_rtc_time		= mpc8xx_get_rtc_time,
153	.progress		= udbg_progress,
154};
155