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
47 struct cpm_pin {
48 int port, pin, flags;
49 };
50
51 static 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
66 static 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
init_pins(int n,struct cpm_pin * pin)83 static 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
init_ioports(void)93 static 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
tqm8xx_setup_arch(void)114 static void __init tqm8xx_setup_arch(void)
115 {
116 cpm_reset();
117 init_ioports();
118 }
119
tqm8xx_probe(void)120 static 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
127 static 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
declare_of_platform_devices(void)135 static int __init declare_of_platform_devices(void)
136 {
137 of_platform_bus_probe(NULL, of_bus_ids, NULL);
138
139 return 0;
140 }
141 machine_device_initcall(tqm8xx, declare_of_platform_devices);
142
define_machine(tqm8xx)143 define_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