1 /*
2 * Samsung's Exynos4210 flattened device tree enabled machine
3 *
4 * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com
6 * Copyright (c) 2010-2011 Linaro Ltd.
7 * www.linaro.org
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14 #include <linux/of_platform.h>
15 #include <linux/serial_core.h>
16
17 #include <asm/mach/arch.h>
18 #include <asm/hardware/gic.h>
19 #include <mach/map.h>
20
21 #include <plat/cpu.h>
22 #include <plat/regs-serial.h>
23
24 #include "common.h"
25
26 /*
27 * The following lookup table is used to override device names when devices
28 * are registered from device tree. This is temporarily added to enable
29 * device tree support addition for the Exynos4 architecture.
30 *
31 * For drivers that require platform data to be provided from the machine
32 * file, a platform data pointer can also be supplied along with the
33 * devices names. Usually, the platform data elements that cannot be parsed
34 * from the device tree by the drivers (example: function pointers) are
35 * supplied. But it should be noted that this is a temporary mechanism and
36 * at some point, the drivers should be capable of parsing all the platform
37 * data from the device tree.
38 */
39 static const struct of_dev_auxdata exynos4210_auxdata_lookup[] __initconst = {
40 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART0,
41 "exynos4210-uart.0", NULL),
42 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART1,
43 "exynos4210-uart.1", NULL),
44 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART2,
45 "exynos4210-uart.2", NULL),
46 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART3,
47 "exynos4210-uart.3", NULL),
48 OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(0),
49 "exynos4-sdhci.0", NULL),
50 OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(1),
51 "exynos4-sdhci.1", NULL),
52 OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(2),
53 "exynos4-sdhci.2", NULL),
54 OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(3),
55 "exynos4-sdhci.3", NULL),
56 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(0),
57 "s3c2440-i2c.0", NULL),
58 OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA0, "dma-pl330.0", NULL),
59 OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA1, "dma-pl330.1", NULL),
60 {},
61 };
62
exynos4210_dt_map_io(void)63 static void __init exynos4210_dt_map_io(void)
64 {
65 exynos_init_io(NULL, 0);
66 s3c24xx_init_clocks(24000000);
67 }
68
exynos4210_dt_machine_init(void)69 static void __init exynos4210_dt_machine_init(void)
70 {
71 of_platform_populate(NULL, of_default_bus_match_table,
72 exynos4210_auxdata_lookup, NULL);
73 }
74
75 static char const *exynos4210_dt_compat[] __initdata = {
76 "samsung,exynos4210",
77 NULL
78 };
79
80 DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
81 /* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */
82 .init_irq = exynos4_init_irq,
83 .map_io = exynos4210_dt_map_io,
84 .handle_irq = gic_handle_irq,
85 .init_machine = exynos4210_dt_machine_init,
86 .timer = &exynos4_timer,
87 .dt_compat = exynos4210_dt_compat,
88 .restart = exynos4_restart,
89 MACHINE_END
90