2 * Samsung's EXYNOS4 flattened device tree enabled machine
4 * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com
6 * Copyright (c) 2010-2011 Linaro Ltd.
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.
14 #include <linux/of_platform.h>
15 #include <linux/serial_core.h>
17 #include <asm/mach/arch.h>
21 #include <plat/regs-serial.h>
26 * The following lookup table is used to override device names when devices
27 * are registered from device tree. This is temporarily added to enable
28 * device tree support addition for the Exynos4 architecture.
30 * For drivers that require platform data to be provided from the machine
31 * file, a platform data pointer can also be supplied along with the
32 * devices names. Usually, the platform data elements that cannot be parsed
33 * from the device tree by the drivers (example: function pointers) are
34 * supplied. But it should be noted that this is a temporary mechanism and
35 * at some point, the drivers should be capable of parsing all the platform
36 * data from the device tree.
38 static const struct of_dev_auxdata exynos4_auxdata_lookup[] __initconst = {
39 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART0,
40 "exynos4210-uart.0", NULL),
41 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART1,
42 "exynos4210-uart.1", NULL),
43 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART2,
44 "exynos4210-uart.2", NULL),
45 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART3,
46 "exynos4210-uart.3", NULL),
47 OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(0),
48 "exynos4-sdhci.0", NULL),
49 OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(1),
50 "exynos4-sdhci.1", NULL),
51 OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(2),
52 "exynos4-sdhci.2", NULL),
53 OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(3),
54 "exynos4-sdhci.3", NULL),
55 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(0),
56 "s3c2440-i2c.0", NULL),
57 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(1),
58 "s3c2440-i2c.1", NULL),
59 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(2),
60 "s3c2440-i2c.2", NULL),
61 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(3),
62 "s3c2440-i2c.3", NULL),
63 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(4),
64 "s3c2440-i2c.4", NULL),
65 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(5),
66 "s3c2440-i2c.5", NULL),
67 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(6),
68 "s3c2440-i2c.6", NULL),
69 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(7),
70 "s3c2440-i2c.7", NULL),
71 OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI0,
72 "exynos4210-spi.0", NULL),
73 OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI1,
74 "exynos4210-spi.1", NULL),
75 OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI2,
76 "exynos4210-spi.2", NULL),
77 OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA0, "dma-pl330.0", NULL),
78 OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA1, "dma-pl330.1", NULL),
79 OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_MDMA1, "dma-pl330.2", NULL),
80 OF_DEV_AUXDATA("samsung,exynos4210-tmu", EXYNOS4_PA_TMU,
85 static void __init exynos4_dt_map_io(void)
87 exynos_init_io(NULL, 0);
88 s3c24xx_init_clocks(24000000);
91 static void __init exynos4_dt_machine_init(void)
93 of_platform_populate(NULL, of_default_bus_match_table,
94 exynos4_auxdata_lookup, NULL);
97 static char const *exynos4_dt_compat[] __initdata = {
100 "samsung,exynos4412",
104 DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
105 /* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */
106 .smp = smp_ops(exynos_smp_ops),
107 .init_irq = exynos4_init_irq,
108 .map_io = exynos4_dt_map_io,
109 .init_machine = exynos4_dt_machine_init,
110 .init_late = exynos_init_late,
111 .init_time = exynos4_timer_init,
112 .dt_compat = exynos4_dt_compat,
113 .restart = exynos4_restart,