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Sascha Hauer9f0749e2012-02-28 21:57:50 +01001/*
2 * Copyright 2012 Sascha Hauer, Pengutronix
3 *
4 * The code contained herein is licensed under the GNU General Public
5 * License. You may obtain a copy of the GNU General Public License
6 * Version 2 or later at the following locations:
7 *
8 * http://www.opensource.org/licenses/gpl-license.html
9 * http://www.gnu.org/copyleft/gpl.html
10 */
11
12#include <linux/irq.h>
13#include <linux/irqdomain.h>
14#include <linux/of_irq.h>
15#include <linux/of_platform.h>
16#include <asm/mach/arch.h>
17#include <asm/mach/time.h>
18#include <mach/common.h>
19#include <mach/mx27.h>
20
21static const struct of_dev_auxdata imx27_auxdata_lookup[] __initconst = {
22 OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART1_BASE_ADDR, "imx21-uart.0", NULL),
23 OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART2_BASE_ADDR, "imx21-uart.1", NULL),
24 OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART3_BASE_ADDR, "imx21-uart.2", NULL),
25 OF_DEV_AUXDATA("fsl,imx27-fec", MX27_FEC_BASE_ADDR, "imx27-fec.0", NULL),
26 OF_DEV_AUXDATA("fsl,imx27-i2c", MX27_I2C1_BASE_ADDR, "imx-i2c.0", NULL),
27 OF_DEV_AUXDATA("fsl,imx27-i2c", MX27_I2C2_BASE_ADDR, "imx-i2c.1", NULL),
28 OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI1_BASE_ADDR, "imx27-cspi.0", NULL),
29 OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI2_BASE_ADDR, "imx27-cspi.1", NULL),
30 OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI3_BASE_ADDR, "imx27-cspi.2", NULL),
31 OF_DEV_AUXDATA("fsl,imx27-wdt", MX27_WDOG_BASE_ADDR, "imx2-wdt.0", NULL),
Uwe Kleine-König37787362012-04-23 11:23:42 +020032 OF_DEV_AUXDATA("fsl,imx27-nand", MX27_NFC_BASE_ADDR, "mxc_nand.0", NULL),
Sascha Hauer9f0749e2012-02-28 21:57:50 +010033 { /* sentinel */ }
34};
35
36static int __init imx27_avic_add_irq_domain(struct device_node *np,
37 struct device_node *interrupt_parent)
38{
Fabio Estevamde1de152012-04-11 22:12:09 -030039 irq_domain_add_legacy(np, 64, 0, 0, &irq_domain_simple_ops, NULL);
Sascha Hauer9f0749e2012-02-28 21:57:50 +010040 return 0;
41}
42
43static int __init imx27_gpio_add_irq_domain(struct device_node *np,
44 struct device_node *interrupt_parent)
45{
46 static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS;
47
Fabio Estevamde1de152012-04-11 22:12:09 -030048 gpio_irq_base -= 32;
49 irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops,
50 NULL);
Sascha Hauer9f0749e2012-02-28 21:57:50 +010051
52 return 0;
53}
54
55static const struct of_device_id imx27_irq_match[] __initconst = {
56 { .compatible = "fsl,imx27-avic", .data = imx27_avic_add_irq_domain, },
57 { .compatible = "fsl,imx27-gpio", .data = imx27_gpio_add_irq_domain, },
58 { /* sentinel */ }
59};
60
61static void __init imx27_dt_init(void)
62{
63 of_irq_init(imx27_irq_match);
64
65 of_platform_populate(NULL, of_default_bus_match_table,
66 imx27_auxdata_lookup, NULL);
67}
68
69static void __init imx27_timer_init(void)
70{
71 mx27_clocks_init_dt();
72}
73
74static struct sys_timer imx27_timer = {
75 .init = imx27_timer_init,
76};
77
Uwe Kleine-König3e386562012-06-08 12:04:50 +020078static const char * const imx27_dt_board_compat[] __initconst = {
Sascha Hauer9f0749e2012-02-28 21:57:50 +010079 "fsl,imx27",
80 NULL
81};
82
83DT_MACHINE_START(IMX27_DT, "Freescale i.MX27 (Device Tree Support)")
84 .map_io = mx27_map_io,
85 .init_early = imx27_init_early,
86 .init_irq = mx27_init_irq,
87 .handle_irq = imx27_handle_irq,
88 .timer = &imx27_timer,
89 .init_machine = imx27_dt_init,
90 .dt_compat = imx27_dt_board_compat,
91 .restart = mxc_restart,
92MACHINE_END