Merge tag 'arm-soc-imx-move' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
[~shefty/rdma-dev.git] / arch / arm / mach-imx / imx53-dt.c
1 /*
2  * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
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/io.h>
14 #include <linux/irq.h>
15 #include <linux/irqdomain.h>
16 #include <linux/of_irq.h>
17 #include <linux/of_platform.h>
18 #include <asm/mach/arch.h>
19 #include <asm/mach/time.h>
20 #include <mach/common.h>
21 #include <mach/mx53.h>
22
23 /*
24  * Lookup table for attaching a specific name and platform_data pointer to
25  * devices as they get created by of_platform_populate().  Ideally this table
26  * would not exist, but the current clock implementation depends on some devices
27  * having a specific name.
28  */
29 static const struct of_dev_auxdata imx53_auxdata_lookup[] __initconst = {
30         OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART1_BASE_ADDR, "imx21-uart.0", NULL),
31         OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART2_BASE_ADDR, "imx21-uart.1", NULL),
32         OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART3_BASE_ADDR, "imx21-uart.2", NULL),
33         OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART4_BASE_ADDR, "imx21-uart.3", NULL),
34         OF_DEV_AUXDATA("fsl,imx53-uart", MX53_UART5_BASE_ADDR, "imx21-uart.4", NULL),
35         OF_DEV_AUXDATA("fsl,imx53-fec", MX53_FEC_BASE_ADDR, "imx25-fec.0", NULL),
36         OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC1_BASE_ADDR, "sdhci-esdhc-imx53.0", NULL),
37         OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC2_BASE_ADDR, "sdhci-esdhc-imx53.1", NULL),
38         OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC3_BASE_ADDR, "sdhci-esdhc-imx53.2", NULL),
39         OF_DEV_AUXDATA("fsl,imx53-esdhc", MX53_ESDHC4_BASE_ADDR, "sdhci-esdhc-imx53.3", NULL),
40         OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI1_BASE_ADDR, "imx51-ecspi.0", NULL),
41         OF_DEV_AUXDATA("fsl,imx53-ecspi", MX53_ECSPI2_BASE_ADDR, "imx51-ecspi.1", NULL),
42         OF_DEV_AUXDATA("fsl,imx53-cspi", MX53_CSPI_BASE_ADDR, "imx35-cspi.0", NULL),
43         OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C1_BASE_ADDR, "imx-i2c.0", NULL),
44         OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C2_BASE_ADDR, "imx-i2c.1", NULL),
45         OF_DEV_AUXDATA("fsl,imx53-i2c", MX53_I2C3_BASE_ADDR, "imx-i2c.2", NULL),
46         OF_DEV_AUXDATA("fsl,imx53-sdma", MX53_SDMA_BASE_ADDR, "imx35-sdma", NULL),
47         OF_DEV_AUXDATA("fsl,imx53-wdt", MX53_WDOG1_BASE_ADDR, "imx2-wdt.0", NULL),
48         { /* sentinel */ }
49 };
50
51 static int __init imx53_tzic_add_irq_domain(struct device_node *np,
52                                 struct device_node *interrupt_parent)
53 {
54         irq_domain_add_simple(np, 0);
55         return 0;
56 }
57
58 static int __init imx53_gpio_add_irq_domain(struct device_node *np,
59                                 struct device_node *interrupt_parent)
60 {
61         static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS;
62
63         gpio_irq_base -= 32;
64         irq_domain_add_simple(np, gpio_irq_base);
65
66         return 0;
67 }
68
69 static const struct of_device_id imx53_irq_match[] __initconst = {
70         { .compatible = "fsl,imx53-tzic", .data = imx53_tzic_add_irq_domain, },
71         { .compatible = "fsl,imx53-gpio", .data = imx53_gpio_add_irq_domain, },
72         { /* sentinel */ }
73 };
74
75 static const struct of_device_id imx53_iomuxc_of_match[] __initconst = {
76         { .compatible = "fsl,imx53-iomuxc-ard", .data = imx53_ard_common_init, },
77         { .compatible = "fsl,imx53-iomuxc-evk", .data = imx53_evk_common_init, },
78         { .compatible = "fsl,imx53-iomuxc-qsb", .data = imx53_qsb_common_init, },
79         { .compatible = "fsl,imx53-iomuxc-smd", .data = imx53_smd_common_init, },
80         { /* sentinel */ }
81 };
82
83 static void __init imx53_dt_init(void)
84 {
85         struct device_node *node;
86         const struct of_device_id *of_id;
87         void (*func)(void);
88
89         of_irq_init(imx53_irq_match);
90
91         node = of_find_matching_node(NULL, imx53_iomuxc_of_match);
92         if (node) {
93                 of_id = of_match_node(imx53_iomuxc_of_match, node);
94                 func = of_id->data;
95                 func();
96                 of_node_put(node);
97         }
98
99         of_platform_populate(NULL, of_default_bus_match_table,
100                              imx53_auxdata_lookup, NULL);
101 }
102
103 static void __init imx53_timer_init(void)
104 {
105         mx53_clocks_init_dt();
106 }
107
108 static struct sys_timer imx53_timer = {
109         .init = imx53_timer_init,
110 };
111
112 static const char *imx53_dt_board_compat[] __initdata = {
113         "fsl,imx53-ard",
114         "fsl,imx53-evk",
115         "fsl,imx53-qsb",
116         "fsl,imx53-smd",
117         NULL
118 };
119
120 DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)")
121         .map_io         = mx53_map_io,
122         .init_early     = imx53_init_early,
123         .init_irq       = mx53_init_irq,
124         .handle_irq     = imx53_handle_irq,
125         .timer          = &imx53_timer,
126         .init_machine   = imx53_dt_init,
127         .dt_compat      = imx53_dt_board_compat,
128         .restart        = mxc_restart,
129 MACHINE_END