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/fsl_devices.h>
28 #include <linux/mii.h>
29 #include <linux/of_fdt.h>
30 #include <linux/of_platform.h>
31
32 #include <asm/delay.h>
33 #include <asm/io.h>
34 #include <asm/machdep.h>
35 #include <asm/page.h>
36 #include <asm/processor.h>
37 #include <asm/time.h>
38 #include <asm/8xx_immap.h>
39 #include <asm/cpm1.h>
40 #include <asm/udbg.h>
41
42 #include "mpc8xx.h"
43 #include "pic.h"
44
45 struct cpm_pin {
46 int port, pin, flags;
47 };
48
49 static struct cpm_pin tqm8xx_pins[] __initdata = {
50 /* SMC1 */
51 {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
52 {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
53
54 /* SCC1 */
55 {CPM_PORTA, 5, CPM_PIN_INPUT}, /* CLK1 */
56 {CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */
57 {CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */
58 {CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */
59 {CPM_PORTC, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
60 {CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO},
61 {CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO},
62 };
63
64 static struct cpm_pin tqm8xx_fec_pins[] __initdata = {
65 /* MII */
66 {CPM_PORTD, 3, CPM_PIN_OUTPUT},
67 {CPM_PORTD, 4, CPM_PIN_OUTPUT},
68 {CPM_PORTD, 5, CPM_PIN_OUTPUT},
69 {CPM_PORTD, 6, CPM_PIN_OUTPUT},
70 {CPM_PORTD, 7, CPM_PIN_OUTPUT},
71 {CPM_PORTD, 8, CPM_PIN_OUTPUT},
72 {CPM_PORTD, 9, CPM_PIN_OUTPUT},
73 {CPM_PORTD, 10, CPM_PIN_OUTPUT},
74 {CPM_PORTD, 11, CPM_PIN_OUTPUT},
75 {CPM_PORTD, 12, CPM_PIN_OUTPUT},
76 {CPM_PORTD, 13, CPM_PIN_OUTPUT},
77 {CPM_PORTD, 14, CPM_PIN_OUTPUT},
78 {CPM_PORTD, 15, CPM_PIN_OUTPUT},
79 };
80
init_pins(int n,struct cpm_pin * pin)81 static void __init init_pins(int n, struct cpm_pin *pin)
82 {
83 int i;
84
85 for (i = 0; i < n; i++) {
86 cpm1_set_pin(pin->port, pin->pin, pin->flags);
87 pin++;
88 }
89 }
90
init_ioports(void)91 static void __init init_ioports(void)
92 {
93 struct device_node *dnode;
94 struct property *prop;
95 int len;
96
97 init_pins(ARRAY_SIZE(tqm8xx_pins), &tqm8xx_pins[0]);
98
99 cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
100
101 dnode = of_find_node_by_name(NULL, "aliases");
102 if (dnode == NULL)
103 return;
104 prop = of_find_property(dnode, "ethernet1", &len);
105
106 of_node_put(dnode);
107
108 if (prop == NULL)
109 return;
110
111 /* init FEC pins */
112 init_pins(ARRAY_SIZE(tqm8xx_fec_pins), &tqm8xx_fec_pins[0]);
113 }
114
tqm8xx_setup_arch(void)115 static void __init tqm8xx_setup_arch(void)
116 {
117 cpm_reset();
118 init_ioports();
119 }
120
121 static const struct of_device_id of_bus_ids[] __initconst = {
122 { .name = "soc", },
123 { .name = "cpm", },
124 { .name = "localbus", },
125 { .compatible = "simple-bus" },
126 {},
127 };
128
declare_of_platform_devices(void)129 static int __init declare_of_platform_devices(void)
130 {
131 of_platform_bus_probe(NULL, of_bus_ids, NULL);
132
133 return 0;
134 }
135 machine_device_initcall(tqm8xx, declare_of_platform_devices);
136
define_machine(tqm8xx)137 define_machine(tqm8xx) {
138 .name = "TQM8xx",
139 .compatible = "tqc,tqm8xx",
140 .setup_arch = tqm8xx_setup_arch,
141 .init_IRQ = mpc8xx_pic_init,
142 .get_irq = mpc8xx_get_irq,
143 .restart = mpc8xx_restart,
144 .calibrate_decr = mpc8xx_calibrate_decr,
145 .set_rtc_time = mpc8xx_set_rtc_time,
146 .get_rtc_time = mpc8xx_get_rtc_time,
147 .progress = udbg_progress,
148 };
149