mach-mxs.c revision ce4c6f9b5987ac9402788c518bc5bd8b8572aa1e 
1/*
2 * Copyright 2012 Freescale Semiconductor, Inc.
3 * Copyright 2012 Linaro Ltd.
4 *
5 * The code contained herein is licensed under the GNU General Public
6 * License. You may obtain a copy of the GNU General Public License
7 * Version 2 or later at the following locations:
8 *
9 * http://www.opensource.org/licenses/gpl-license.html
10 * http://www.gnu.org/copyleft/gpl.html
11 */
12
13#include <linux/clk.h>
14#include <linux/clkdev.h>
15#include <linux/err.h>
16#include <linux/init.h>
17#include <linux/init.h>
18#include <linux/irqdomain.h>
19#include <linux/of_irq.h>
20#include <linux/of_platform.h>
21#include <asm/mach/arch.h>
22#include <asm/mach/time.h>
23#include <mach/common.h>
24
25static int __init mxs_icoll_add_irq_domain(struct device_node *np,
26				struct device_node *interrupt_parent)
27{
28	irq_domain_add_legacy(np, 128, 0, 0, &irq_domain_simple_ops, NULL);
29
30	return 0;
31}
32
33static int __init mxs_gpio_add_irq_domain(struct device_node *np,
34				struct device_node *interrupt_parent)
35{
36	static int gpio_irq_base = MXS_GPIO_IRQ_START;
37
38	irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL);
39	gpio_irq_base += 32;
40
41	return 0;
42}
43
44static const struct of_device_id mxs_irq_match[] __initconst = {
45	{ .compatible = "fsl,mxs-icoll", .data = mxs_icoll_add_irq_domain, },
46	{ .compatible = "fsl,mxs-gpio", .data = mxs_gpio_add_irq_domain, },
47	{ /* sentinel */ }
48};
49
50static void __init mxs_dt_init_irq(void)
51{
52	icoll_init_irq();
53	of_irq_init(mxs_irq_match);
54}
55
56static void __init imx23_timer_init(void)
57{
58	mx23_clocks_init();
59}
60
61static struct sys_timer imx23_timer = {
62	.init = imx23_timer_init,
63};
64
65static void __init imx28_timer_init(void)
66{
67	mx28_clocks_init();
68}
69
70static struct sys_timer imx28_timer = {
71	.init = imx28_timer_init,
72};
73
74static void __init imx28_evk_init(void)
75{
76	struct clk *clk;
77
78	/* Enable fec phy clock */
79	clk = clk_get_sys("enet_out", NULL);
80	if (!IS_ERR(clk))
81		clk_prepare_enable(clk);
82}
83
84static void __init mxs_machine_init(void)
85{
86	if (of_machine_is_compatible("fsl,imx28-evk"))
87		imx28_evk_init();
88
89	of_platform_populate(NULL, of_default_bus_match_table,
90				NULL, NULL);
91}
92
93static const char *imx23_dt_compat[] __initdata = {
94	"fsl,imx23-evk",
95	"fsl,imx23",
96	NULL,
97};
98
99static const char *imx28_dt_compat[] __initdata = {
100	"fsl,imx28-evk",
101	"fsl,imx28",
102	NULL,
103};
104
105DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)")
106	.map_io		= mx23_map_io,
107	.init_irq	= mxs_dt_init_irq,
108	.timer		= &imx23_timer,
109	.init_machine	= mxs_machine_init,
110	.dt_compat	= imx23_dt_compat,
111	.restart	= mxs_restart,
112MACHINE_END
113
114DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)")
115	.map_io		= mx28_map_io,
116	.init_irq	= mxs_dt_init_irq,
117	.timer		= &imx28_timer,
118	.init_machine	= mxs_machine_init,
119	.dt_compat	= imx28_dt_compat,
120	.restart	= mxs_restart,
121MACHINE_END
122