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authorShawn Guo <shawn.guo@linaro.org>2011-09-06 03:05:25 -0400
committerArnd Bergmann <arnd@arndb.de>2011-10-31 09:26:26 -0400
commit13eed9897a2160272df2804ac3bbd4d91c76e577 (patch)
treec61e32126f0d0202793bcbcb1285bf7a50be3806 /arch/arm/mach-imx/mach-imx6q.c
parent69c31b7a6e9cd4654ed0bfc7e70b4d7076a5cdb3 (diff)
arm/imx6q: add device tree machine support
It adds generic device tree based machine support for imx6q. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx/mach-imx6q.c')
-rw-r--r--arch/arm/mach-imx/mach-imx6q.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
new file mode 100644
index 000000000000..8bf5fa349484
--- /dev/null
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -0,0 +1,84 @@
1/*
2 * Copyright 2011 Freescale Semiconductor, Inc.
3 * Copyright 2011 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/init.h>
14#include <linux/irq.h>
15#include <linux/irqdomain.h>
16#include <linux/of.h>
17#include <linux/of_irq.h>
18#include <linux/of_platform.h>
19#include <asm/hardware/cache-l2x0.h>
20#include <asm/hardware/gic.h>
21#include <asm/mach/arch.h>
22#include <asm/mach/time.h>
23#include <mach/common.h>
24#include <mach/hardware.h>
25
26static void __init imx6q_init_machine(void)
27{
28 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
29
30 imx6q_pm_init();
31}
32
33static void __init imx6q_map_io(void)
34{
35 imx_lluart_map_io();
36 imx_scu_map_io();
37}
38
39static void __init imx6q_gpio_add_irq_domain(struct device_node *np,
40 struct device_node *interrupt_parent)
41{
42 static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS -
43 32 * 7; /* imx6q gets 7 gpio ports */
44
45 irq_domain_add_simple(np, gpio_irq_base);
46 gpio_irq_base += 32;
47}
48
49static const struct of_device_id imx6q_irq_match[] __initconst = {
50 { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
51 { .compatible = "fsl,imx6q-gpio", .data = imx6q_gpio_add_irq_domain, },
52 { /* sentinel */ }
53};
54
55static void __init imx6q_init_irq(void)
56{
57 l2x0_of_init(0, ~0UL);
58 imx_src_init();
59 imx_gpc_init();
60 of_irq_init(imx6q_irq_match);
61}
62
63static void __init imx6q_timer_init(void)
64{
65 mx6q_clocks_init();
66}
67
68static struct sys_timer imx6q_timer = {
69 .init = imx6q_timer_init,
70};
71
72static const char *imx6q_dt_compat[] __initdata = {
73 "fsl,imx6q-sabreauto",
74 NULL,
75};
76
77DT_MACHINE_START(IMX6Q, "Freescale i.MX6 Quad (Device Tree)")
78 .map_io = imx6q_map_io,
79 .init_irq = imx6q_init_irq,
80 .handle_irq = imx6q_handle_irq,
81 .timer = &imx6q_timer,
82 .init_machine = imx6q_init_machine,
83 .dt_compat = imx6q_dt_compat,
84MACHINE_END