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