1 /* Analogue & Micro Adder MPC875 board support
2 *
3 * Author: Scott Wood <scottwood@freescale.com>
4 *
5 * Copyright (c) 2007 Freescale Semiconductor, Inc.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License, version 2, as
9 * published by the Free Software Foundation.
10 */
11
12 #include <linux/init.h>
13 #include <linux/fs_enet_pd.h>
14 #include <linux/of_platform.h>
15
16 #include <asm/time.h>
17 #include <asm/machdep.h>
18 #include <asm/cpm1.h>
19 #include <asm/fs_pd.h>
20 #include <asm/udbg.h>
21 #include <asm/prom.h>
22
23 #include "mpc8xx.h"
24
25 struct cpm_pin {
26 int port, pin, flags;
27 };
28
29 static __initdata struct cpm_pin adder875_pins[] = {
30 /* SMC1 */
31 {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
32 {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
33
34 /* MII1 */
35 {CPM_PORTA, 0, CPM_PIN_INPUT},
36 {CPM_PORTA, 1, CPM_PIN_INPUT},
37 {CPM_PORTA, 2, CPM_PIN_INPUT},
38 {CPM_PORTA, 3, CPM_PIN_INPUT},
39 {CPM_PORTA, 4, CPM_PIN_OUTPUT},
40 {CPM_PORTA, 10, CPM_PIN_OUTPUT},
41 {CPM_PORTA, 11, CPM_PIN_OUTPUT},
42 {CPM_PORTB, 19, CPM_PIN_INPUT},
43 {CPM_PORTB, 31, CPM_PIN_INPUT},
44 {CPM_PORTC, 12, CPM_PIN_INPUT},
45 {CPM_PORTC, 13, CPM_PIN_INPUT},
46 {CPM_PORTE, 30, CPM_PIN_OUTPUT},
47 {CPM_PORTE, 31, CPM_PIN_OUTPUT},
48
49 /* MII2 */
50 {CPM_PORTE, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
51 {CPM_PORTE, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
52 {CPM_PORTE, 16, CPM_PIN_OUTPUT},
53 {CPM_PORTE, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
54 {CPM_PORTE, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
55 {CPM_PORTE, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
56 {CPM_PORTE, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
57 {CPM_PORTE, 21, CPM_PIN_OUTPUT},
58 {CPM_PORTE, 22, CPM_PIN_OUTPUT},
59 {CPM_PORTE, 23, CPM_PIN_OUTPUT},
60 {CPM_PORTE, 24, CPM_PIN_OUTPUT},
61 {CPM_PORTE, 25, CPM_PIN_OUTPUT},
62 {CPM_PORTE, 26, CPM_PIN_OUTPUT},
63 {CPM_PORTE, 27, CPM_PIN_OUTPUT},
64 {CPM_PORTE, 28, CPM_PIN_OUTPUT},
65 {CPM_PORTE, 29, CPM_PIN_OUTPUT},
66 };
67
init_ioports(void)68 static void __init init_ioports(void)
69 {
70 int i;
71
72 for (i = 0; i < ARRAY_SIZE(adder875_pins); i++) {
73 const struct cpm_pin *pin = &adder875_pins[i];
74 cpm1_set_pin(pin->port, pin->pin, pin->flags);
75 }
76
77 cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
78
79 /* Set FEC1 and FEC2 to MII mode */
80 clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
81 }
82
adder875_setup(void)83 static void __init adder875_setup(void)
84 {
85 cpm_reset();
86 init_ioports();
87 }
88
adder875_probe(void)89 static int __init adder875_probe(void)
90 {
91 unsigned long root = of_get_flat_dt_root();
92 return of_flat_dt_is_compatible(root, "analogue-and-micro,adder875");
93 }
94
95 static __initdata struct of_device_id of_bus_ids[] = {
96 { .compatible = "simple-bus", },
97 {},
98 };
99
declare_of_platform_devices(void)100 static int __init declare_of_platform_devices(void)
101 {
102 of_platform_bus_probe(NULL, of_bus_ids, NULL);
103 return 0;
104 }
105 machine_device_initcall(adder875, declare_of_platform_devices);
106
define_machine(adder875)107 define_machine(adder875) {
108 .name = "Adder MPC875",
109 .probe = adder875_probe,
110 .setup_arch = adder875_setup,
111 .init_IRQ = mpc8xx_pics_init,
112 .get_irq = mpc8xx_get_irq,
113 .restart = mpc8xx_restart,
114 .calibrate_decr = generic_calibrate_decr,
115 .set_rtc_time = mpc8xx_set_rtc_time,
116 .get_rtc_time = mpc8xx_get_rtc_time,
117 .progress = udbg_progress,
118 };
119