1/*arch/powerpc/platforms/8xx/mpc86xads_setup.c
2 *
3 * Platform setup for the Freescale mpc86xads board
4 *
5 * Vitaly Bordug <vbordug@ru.mvista.com>
6 *
7 * Copyright 2005 MontaVista Software Inc.
8 *
9 * Heavily modified by Scott Wood <scottwood@freescale.com>
10 * Copyright 2007 Freescale Semiconductor, Inc.
11 *
12 * This file is licensed under the terms of the GNU General Public License
13 * version 2. This program is licensed "as is" without any warranty of any
14 * kind, whether express or implied.
15 */
16
17#include <linux/init.h>
18#include <linux/of_address.h>
19#include <linux/of_fdt.h>
20#include <linux/of_platform.h>
21
22#include <asm/io.h>
23#include <asm/machdep.h>
24#include <asm/time.h>
25#include <asm/8xx_immap.h>
26#include <asm/cpm1.h>
27#include <asm/fs_pd.h>
28#include <asm/udbg.h>
29
30#include "mpc86xads.h"
31#include "mpc8xx.h"
32
33struct cpm_pin {
34	int port, pin, flags;
35};
36
37static struct cpm_pin mpc866ads_pins[] = {
38	/* SMC1 */
39	{CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
40	{CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
41
42	/* SMC2 */
43	{CPM_PORTB, 21, CPM_PIN_INPUT}, /* RX */
44	{CPM_PORTB, 20, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
45
46	/* SCC1 */
47	{CPM_PORTA, 6, CPM_PIN_INPUT}, /* CLK1 */
48	{CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */
49	{CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */
50	{CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */
51	{CPM_PORTB, 19, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
52	{CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* RENA */
53	{CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CLSN */
54
55	/* MII */
56	{CPM_PORTD, 3, CPM_PIN_OUTPUT},
57	{CPM_PORTD, 4, CPM_PIN_OUTPUT},
58	{CPM_PORTD, 5, CPM_PIN_OUTPUT},
59	{CPM_PORTD, 6, CPM_PIN_OUTPUT},
60	{CPM_PORTD, 7, CPM_PIN_OUTPUT},
61	{CPM_PORTD, 8, CPM_PIN_OUTPUT},
62	{CPM_PORTD, 9, CPM_PIN_OUTPUT},
63	{CPM_PORTD, 10, CPM_PIN_OUTPUT},
64	{CPM_PORTD, 11, CPM_PIN_OUTPUT},
65	{CPM_PORTD, 12, CPM_PIN_OUTPUT},
66	{CPM_PORTD, 13, CPM_PIN_OUTPUT},
67	{CPM_PORTD, 14, CPM_PIN_OUTPUT},
68	{CPM_PORTD, 15, CPM_PIN_OUTPUT},
69
70	/* I2C */
71	{CPM_PORTB, 26, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
72	{CPM_PORTB, 27, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
73};
74
75static void __init init_ioports(void)
76{
77	int i;
78
79	for (i = 0; i < ARRAY_SIZE(mpc866ads_pins); i++) {
80		struct cpm_pin *pin = &mpc866ads_pins[i];
81		cpm1_set_pin(pin->port, pin->pin, pin->flags);
82	}
83
84	cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
85	cpm1_clk_setup(CPM_CLK_SMC2, CPM_BRG2, CPM_CLK_RTX);
86	cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK1, CPM_CLK_TX);
87	cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX);
88
89	/* Set FEC1 and FEC2 to MII mode */
90	clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
91}
92
93static void __init mpc86xads_setup_arch(void)
94{
95	struct device_node *np;
96	u32 __iomem *bcsr_io;
97
98	cpm_reset();
99	init_ioports();
100
101	np = of_find_compatible_node(NULL, NULL, "fsl,mpc866ads-bcsr");
102	if (!np) {
103		printk(KERN_CRIT "Could not find fsl,mpc866ads-bcsr node\n");
104		return;
105	}
106
107	bcsr_io = of_iomap(np, 0);
108	of_node_put(np);
109
110	if (bcsr_io == NULL) {
111		printk(KERN_CRIT "Could not remap BCSR\n");
112		return;
113	}
114
115	clrbits32(bcsr_io, BCSR1_RS232EN_1 | BCSR1_RS232EN_2 | BCSR1_ETHEN);
116	iounmap(bcsr_io);
117}
118
119static int __init mpc86xads_probe(void)
120{
121	unsigned long root = of_get_flat_dt_root();
122	return of_flat_dt_is_compatible(root, "fsl,mpc866ads");
123}
124
125static const struct of_device_id of_bus_ids[] __initconst = {
126	{ .name = "soc", },
127	{ .name = "cpm", },
128	{ .name = "localbus", },
129	{},
130};
131
132static int __init declare_of_platform_devices(void)
133{
134	of_platform_bus_probe(NULL, of_bus_ids, NULL);
135
136	return 0;
137}
138machine_device_initcall(mpc86x_ads, declare_of_platform_devices);
139
140define_machine(mpc86x_ads) {
141	.name			= "MPC86x ADS",
142	.probe			= mpc86xads_probe,
143	.setup_arch		= mpc86xads_setup_arch,
144	.init_IRQ		= mpc8xx_pics_init,
145	.get_irq		= mpc8xx_get_irq,
146	.restart		= mpc8xx_restart,
147	.calibrate_decr		= mpc8xx_calibrate_decr,
148	.set_rtc_time		= mpc8xx_set_rtc_time,
149	.get_rtc_time		= mpc8xx_get_rtc_time,
150	.progress		= udbg_progress,
151};
152