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Diffstat (limited to 'arch/arm/mach-exynos/mach-exynos4-dt.c')
-rw-r--r--arch/arm/mach-exynos/mach-exynos4-dt.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/mach-exynos4-dt.c b/arch/arm/mach-exynos/mach-exynos4-dt.c
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index 00000000000..85fa02767d6
--- /dev/null
+++ b/arch/arm/mach-exynos/mach-exynos4-dt.c
@@ -0,0 +1,85 @@
+/*
+ * Samsung's Exynos4210 flattened device tree enabled machine
+ *
+ * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ * Copyright (c) 2010-2011 Linaro Ltd.
+ * www.linaro.org
+ *
+ * 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 <mach/map.h>
+
+#include <plat/cpu.h>
+#include <plat/regs-serial.h>
+#include <plat/exynos4.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 Exynos4 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 exynos4210_auxdata_lookup[] __initconst = {
+ OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART0,
+ "exynos4210-uart.0", NULL),
+ OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART1,
+ "exynos4210-uart.1", NULL),
+ OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART2,
+ "exynos4210-uart.2", NULL),
+ OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART3,
+ "exynos4210-uart.3", NULL),
+ OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(0),
+ "exynos4-sdhci.0", NULL),
+ OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(1),
+ "exynos4-sdhci.1", NULL),
+ OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(2),
+ "exynos4-sdhci.2", NULL),
+ OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(3),
+ "exynos4-sdhci.3", NULL),
+ OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(0),
+ "s3c2440-i2c.0", NULL),
+ OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA0, "dma-pl330.0", NULL),
+ OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA1, "dma-pl330.1", NULL),
+ {},
+};
+
+static void __init exynos4210_dt_map_io(void)
+{
+ s5p_init_io(NULL, 0, S5P_VA_CHIPID);
+ s3c24xx_init_clocks(24000000);
+}
+
+static void __init exynos4210_dt_machine_init(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table,
+ exynos4210_auxdata_lookup, NULL);
+}
+
+static char const *exynos4210_dt_compat[] __initdata = {
+ "samsung,exynos4210",
+ NULL
+};
+
+DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
+ /* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */
+ .init_irq = exynos4_init_irq,
+ .map_io = exynos4210_dt_map_io,
+ .init_machine = exynos4210_dt_machine_init,
+ .timer = &exynos4_timer,
+ .dt_compat = exynos4210_dt_compat,
+MACHINE_END