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Heiko Schocherc4b6a772010-03-23 08:57:01 +01001/*
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/module.h>
22#include <linux/param.h>
23#include <linux/string.h>
24#include <linux/ioport.h>
25#include <linux/device.h>
26#include <linux/delay.h>
27
28#include <linux/fs_enet_pd.h>
29#include <linux/fs_uart_pd.h>
30#include <linux/fsl_devices.h>
31#include <linux/mii.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/system.h>
40#include <asm/time.h>
41#include <asm/mpc8xx.h>
42#include <asm/8xx_immap.h>
43#include <asm/cpm1.h>
44#include <asm/fs_pd.h>
45#include <asm/udbg.h>
46
47#include "mpc8xx.h"
48
49struct cpm_pin {
50 int port, pin, flags;
51};
52
53static struct __initdata cpm_pin tqm8xx_pins[] = {
54 /* SMC1 */
55 {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
56 {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
57
58 /* SCC1 */
59 {CPM_PORTA, 5, CPM_PIN_INPUT}, /* CLK1 */
60 {CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */
61 {CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */
62 {CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */
63 {CPM_PORTC, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
64 {CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO},
65 {CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO},
66};
67
68static struct __initdata cpm_pin tqm8xx_fec_pins[] = {
69 /* MII */
70 {CPM_PORTD, 3, CPM_PIN_OUTPUT},
71 {CPM_PORTD, 4, CPM_PIN_OUTPUT},
72 {CPM_PORTD, 5, CPM_PIN_OUTPUT},
73 {CPM_PORTD, 6, CPM_PIN_OUTPUT},
74 {CPM_PORTD, 7, CPM_PIN_OUTPUT},
75 {CPM_PORTD, 8, CPM_PIN_OUTPUT},
76 {CPM_PORTD, 9, CPM_PIN_OUTPUT},
77 {CPM_PORTD, 10, CPM_PIN_OUTPUT},
78 {CPM_PORTD, 11, CPM_PIN_OUTPUT},
79 {CPM_PORTD, 12, CPM_PIN_OUTPUT},
80 {CPM_PORTD, 13, CPM_PIN_OUTPUT},
81 {CPM_PORTD, 14, CPM_PIN_OUTPUT},
82 {CPM_PORTD, 15, CPM_PIN_OUTPUT},
83};
84
85static void __init init_pins(int n, struct cpm_pin *pin)
86{
87 int i;
88
89 for (i = 0; i < n; i++) {
90 cpm1_set_pin(pin->port, pin->pin, pin->flags);
91 pin++;
92 }
93}
94
95static void __init init_ioports(void)
96{
97 struct device_node *dnode;
98 struct property *prop;
99 int len;
100
101 init_pins(ARRAY_SIZE(tqm8xx_pins), &tqm8xx_pins[0]);
102
103 cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
104
105 dnode = of_find_node_by_name(NULL, "aliases");
106 if (dnode == NULL)
107 return;
108 prop = of_find_property(dnode, "ethernet1", &len);
109 if (prop == NULL)
110 return;
111
112 /* init FEC pins */
113 init_pins(ARRAY_SIZE(tqm8xx_fec_pins), &tqm8xx_fec_pins[0]);
114}
115
116static void __init tqm8xx_setup_arch(void)
117{
118 cpm_reset();
119 init_ioports();
120}
121
122static int __init tqm8xx_probe(void)
123{
124 unsigned long node = of_get_flat_dt_root();
125
126 return of_flat_dt_is_compatible(node, "tqc,tqm8xx");
127}
128
129static struct of_device_id __initdata of_bus_ids[] = {
130 { .name = "soc", },
131 { .name = "cpm", },
132 { .name = "localbus", },
133 { .compatible = "simple-bus" },
134 {},
135};
136
137static int __init declare_of_platform_devices(void)
138{
139 of_platform_bus_probe(NULL, of_bus_ids, NULL);
140
141 return 0;
142}
143machine_device_initcall(tqm8xx, declare_of_platform_devices);
144
145define_machine(tqm8xx) {
146 .name = "TQM8xx",
147 .probe = tqm8xx_probe,
148 .setup_arch = tqm8xx_setup_arch,
149 .init_IRQ = mpc8xx_pics_init,
150 .get_irq = mpc8xx_get_irq,
151 .restart = mpc8xx_restart,
152 .calibrate_decr = mpc8xx_calibrate_decr,
153 .set_rtc_time = mpc8xx_set_rtc_time,
154 .get_rtc_time = mpc8xx_get_rtc_time,
155 .progress = udbg_progress,
156};