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 #include "pic.h"
47
48 struct cpm_pin {
49 int port, pin, flags;
50 };
51
52 static struct cpm_pin tqm8xx_pins[] __initdata = {
53 /* SMC1 */
54 {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
55 {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
56
57 /* SCC1 */
58 {CPM_PORTA, 5, CPM_PIN_INPUT}, /* CLK1 */
59 {CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */
60 {CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */
61 {CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */
62 {CPM_PORTC, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
63 {CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO},
64 {CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO},
65 };
66
67 static struct cpm_pin tqm8xx_fec_pins[] __initdata = {
68 /* MII */
69 {CPM_PORTD, 3, CPM_PIN_OUTPUT},
70 {CPM_PORTD, 4, CPM_PIN_OUTPUT},
71 {CPM_PORTD, 5, CPM_PIN_OUTPUT},
72 {CPM_PORTD, 6, CPM_PIN_OUTPUT},
73 {CPM_PORTD, 7, CPM_PIN_OUTPUT},
74 {CPM_PORTD, 8, CPM_PIN_OUTPUT},
75 {CPM_PORTD, 9, CPM_PIN_OUTPUT},
76 {CPM_PORTD, 10, CPM_PIN_OUTPUT},
77 {CPM_PORTD, 11, CPM_PIN_OUTPUT},
78 {CPM_PORTD, 12, CPM_PIN_OUTPUT},
79 {CPM_PORTD, 13, CPM_PIN_OUTPUT},
80 {CPM_PORTD, 14, CPM_PIN_OUTPUT},
81 {CPM_PORTD, 15, CPM_PIN_OUTPUT},
82 };
83
init_pins(int n,struct cpm_pin * pin)84 static void __init init_pins(int n, struct cpm_pin *pin)
85 {
86 int i;
87
88 for (i = 0; i < n; i++) {
89 cpm1_set_pin(pin->port, pin->pin, pin->flags);
90 pin++;
91 }
92 }
93
init_ioports(void)94 static void __init init_ioports(void)
95 {
96 struct device_node *dnode;
97 struct property *prop;
98 int len;
99
100 init_pins(ARRAY_SIZE(tqm8xx_pins), &tqm8xx_pins[0]);
101
102 cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
103
104 dnode = of_find_node_by_name(NULL, "aliases");
105 if (dnode == NULL)
106 return;
107 prop = of_find_property(dnode, "ethernet1", &len);
108
109 of_node_put(dnode);
110
111 if (prop == NULL)
112 return;
113
114 /* init FEC pins */
115 init_pins(ARRAY_SIZE(tqm8xx_fec_pins), &tqm8xx_fec_pins[0]);
116 }
117
tqm8xx_setup_arch(void)118 static void __init tqm8xx_setup_arch(void)
119 {
120 cpm_reset();
121 init_ioports();
122 }
123
tqm8xx_probe(void)124 static int __init tqm8xx_probe(void)
125 {
126 return of_machine_is_compatible("tqc,tqm8xx");
127 }
128
129 static const struct of_device_id of_bus_ids[] __initconst = {
130 { .name = "soc", },
131 { .name = "cpm", },
132 { .name = "localbus", },
133 { .compatible = "simple-bus" },
134 {},
135 };
136
declare_of_platform_devices(void)137 static int __init declare_of_platform_devices(void)
138 {
139 of_platform_bus_probe(NULL, of_bus_ids, NULL);
140
141 return 0;
142 }
143 machine_device_initcall(tqm8xx, declare_of_platform_devices);
144
define_machine(tqm8xx)145 define_machine(tqm8xx) {
146 .name = "TQM8xx",
147 .probe = tqm8xx_probe,
148 .setup_arch = tqm8xx_setup_arch,
149 .init_IRQ = mpc8xx_pic_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 };
157
