| Thomas Abraham | 6b5ab4f | 2011-11-06 21:54:27 +0530 | [diff] [blame] | 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 <mach/map.h> |
| 19 | |
| 20 | #include <plat/cpu.h> |
| 21 | #include <plat/regs-serial.h> |
| 22 | #include <plat/exynos4.h> |
| 23 | |
| 24 | /* |
| 25 | * The following lookup table is used to override device names when devices |
| 26 | * are registered from device tree. This is temporarily added to enable |
| 27 | * device tree support addition for the Exynos4 architecture. |
| 28 | * |
| 29 | * For drivers that require platform data to be provided from the machine |
| 30 | * file, a platform data pointer can also be supplied along with the |
| 31 | * devices names. Usually, the platform data elements that cannot be parsed |
| 32 | * from the device tree by the drivers (example: function pointers) are |
| 33 | * supplied. But it should be noted that this is a temporary mechanism and |
| 34 | * at some point, the drivers should be capable of parsing all the platform |
| 35 | * data from the device tree. |
| 36 | */ |
| 37 | static const struct of_dev_auxdata exynos4210_auxdata_lookup[] __initconst = { |
| 38 | OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART0, |
| 39 | "exynos4210-uart.0", NULL), |
| 40 | OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART1, |
| 41 | "exynos4210-uart.1", NULL), |
| 42 | OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART2, |
| 43 | "exynos4210-uart.2", NULL), |
| 44 | OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART3, |
| 45 | "exynos4210-uart.3", NULL), |
| 46 | OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(0), |
| 47 | "exynos4-sdhci.0", NULL), |
| 48 | OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(1), |
| 49 | "exynos4-sdhci.1", NULL), |
| 50 | OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(2), |
| 51 | "exynos4-sdhci.2", NULL), |
| 52 | OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(3), |
| 53 | "exynos4-sdhci.3", NULL), |
| 54 | OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(0), |
| 55 | "s3c2440-i2c.0", NULL), |
| 56 | OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA0, "dma-pl330.0", NULL), |
| 57 | OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA1, "dma-pl330.1", NULL), |
| 58 | {}, |
| 59 | }; |
| 60 | |
| 61 | static void __init exynos4210_dt_map_io(void) |
| 62 | { |
| 63 | s5p_init_io(NULL, 0, S5P_VA_CHIPID); |
| 64 | s3c24xx_init_clocks(24000000); |
| 65 | } |
| 66 | |
| 67 | static void __init exynos4210_dt_machine_init(void) |
| 68 | { |
| 69 | of_platform_populate(NULL, of_default_bus_match_table, |
| 70 | exynos4210_auxdata_lookup, NULL); |
| 71 | } |
| 72 | |
| 73 | static char const *exynos4210_dt_compat[] __initdata = { |
| 74 | "samsung,exynos4210", |
| 75 | NULL |
| 76 | }; |
| 77 | |
| 78 | DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)") |
| 79 | /* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */ |
| 80 | .init_irq = exynos4_init_irq, |
| 81 | .map_io = exynos4210_dt_map_io, |
| 82 | .init_machine = exynos4210_dt_machine_init, |
| 83 | .timer = &exynos4_timer, |
| 84 | .dt_compat = exynos4210_dt_compat, |
| 85 | MACHINE_END |