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
25struct cpm_pin {
26	int port, pin, flags;
27};
28
29static __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
68static 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
83static void __init adder875_setup(void)
84{
85	cpm_reset();
86	init_ioports();
87}
88
89static 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
95static const struct of_device_id of_bus_ids[] __initconst = {
96	{ .compatible = "simple-bus", },
97	{},
98};
99
100static int __init declare_of_platform_devices(void)
101{
102	of_platform_bus_probe(NULL, of_bus_ids, NULL);
103	return 0;
104}
105machine_device_initcall(adder875, declare_of_platform_devices);
106
107define_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