diff options
Diffstat (limited to 'arch/arm/mach-exynos/mach-exynos5-dt.c')
| -rw-r--r-- | arch/arm/mach-exynos/mach-exynos5-dt.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c new file mode 100644 index 00000000000..0d26f50081a --- /dev/null +++ b/arch/arm/mach-exynos/mach-exynos5-dt.c @@ -0,0 +1,78 @@ +/* + * SAMSUNG EXYNOS5250 Flattened Device Tree enabled machine + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/of_platform.h> +#include <linux/serial_core.h> + +#include <asm/mach/arch.h> +#include <asm/hardware/gic.h> +#include <mach/map.h> + +#include <plat/cpu.h> +#include <plat/regs-serial.h> + +#include "common.h" + +/* + * The following lookup table is used to override device names when devices + * are registered from device tree. This is temporarily added to enable + * device tree support addition for the EXYNOS5 architecture. + * + * For drivers that require platform data to be provided from the machine + * file, a platform data pointer can also be supplied along with the + * devices names. Usually, the platform data elements that cannot be parsed + * from the device tree by the drivers (example: function pointers) are + * supplied. But it should be noted that this is a temporary mechanism and + * at some point, the drivers should be capable of parsing all the platform + * data from the device tree. + */ +static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = { + OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART0, + "exynos4210-uart.0", NULL), + OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART1, + "exynos4210-uart.1", NULL), + OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART2, + "exynos4210-uart.2", NULL), + OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART3, + "exynos4210-uart.3", NULL), + OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA0, "dma-pl330.0", NULL), + OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA1, "dma-pl330.1", NULL), + OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA1, "dma-pl330.2", NULL), + {}, +}; + +static void __init exynos5250_dt_map_io(void) +{ + exynos_init_io(NULL, 0); + s3c24xx_init_clocks(24000000); +} + +static void __init exynos5250_dt_machine_init(void) +{ + of_platform_populate(NULL, of_default_bus_match_table, + exynos5250_auxdata_lookup, NULL); +} + +static char const *exynos5250_dt_compat[] __initdata = { + "samsung,exynos5250", + NULL +}; + +DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)") + /* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */ + .init_irq = exynos5_init_irq, + .map_io = exynos5250_dt_map_io, + .handle_irq = gic_handle_irq, + .init_machine = exynos5250_dt_machine_init, + .timer = &exynos4_timer, + .dt_compat = exynos5250_dt_compat, + .restart = exynos5_restart, +MACHINE_END |