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>
18 #include <asm/hardware/gic.h>
22 #include <plat/regs-serial.h>
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.
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.
39 static const struct of_dev_auxdata exynos4_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("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(1),
59 "s3c2440-i2c.1", NULL),
60 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(2),
61 "s3c2440-i2c.2", NULL),
62 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(3),
63 "s3c2440-i2c.3", NULL),
64 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(4),
65 "s3c2440-i2c.4", NULL),
66 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(5),
67 "s3c2440-i2c.5", NULL),
68 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(6),
69 "s3c2440-i2c.6", NULL),
70 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(7),
71 "s3c2440-i2c.7", NULL),
72 OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI0,
73 "exynos4210-spi.0", NULL),
74 OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI1,
75 "exynos4210-spi.1", NULL),
76 OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI2,
77 "exynos4210-spi.2", NULL),
78 OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA0, "dma-pl330.0", NULL),
79 OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA1, "dma-pl330.1", 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 .handle_irq = gic_handle_irq,
110 .init_machine = exynos4_dt_machine_init,
111 .init_late = exynos_init_late,
112 .timer = &exynos4_timer,
113 .dt_compat = exynos4_dt_compat,
114 .restart = exynos4_restart,