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authorThomas Abraham <thomas.abraham@linaro.org>2011-11-06 20:24:27 +0400
committerKukjin Kim <kgene.kim@samsung.com>2011-12-23 05:07:11 +0400
commit6b5ab4f442e32f248b6fad29aafd1d5153f4dbd3 (patch)
tree861907fb4f375867118f5f38acbf13fed97d59c9
parent39ce4084a604a3ef0e2836e074c02bbbcc7c1509 (diff)
downloadlinux-6b5ab4f442e32f248b6fad29aafd1d5153f4dbd3.tar.xz
ARM: EXYNOS: Add Exynos4 device tree enabled board file
Add a new EXYNOS4 compatible device tree enabled board file. Boards based on the EXYNOS4 family of SoC's can use this as the machine/board file. When using this machine fike, a corresponding device tree blob which describes the board's properties should be supplied at boot time to the kernel. Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
-rw-r--r--Documentation/devicetree/bindings/arm/insignal-boards.txt8
-rw-r--r--Documentation/devicetree/bindings/arm/samsung-boards.txt8
-rw-r--r--arch/arm/mach-exynos/Kconfig14
-rw-r--r--arch/arm/mach-exynos/Makefile2
-rw-r--r--arch/arm/mach-exynos/mach-exynos4-dt.c85
5 files changed, 117 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/insignal-boards.txt b/Documentation/devicetree/bindings/arm/insignal-boards.txt
new file mode 100644
index 000000000000..524c3dc5d808
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/insignal-boards.txt
@@ -0,0 +1,8 @@
+* Insignal's Exynos4210 based Origen evaluation board
+
+Origen low-cost evaluation board is based on Samsung's Exynos4210 SoC.
+
+Required root node properties:
+ - compatible = should be one or more of the following.
+ (a) "samsung,smdkv310" - for Samsung's SMDKV310 eval board.
+ (b) "samsung,exynos4210" - for boards based on Exynos4210 SoC.
diff --git a/Documentation/devicetree/bindings/arm/samsung-boards.txt b/Documentation/devicetree/bindings/arm/samsung-boards.txt
new file mode 100644
index 000000000000..0bf68be56fd1
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/samsung-boards.txt
@@ -0,0 +1,8 @@
+* Samsung's Exynos4210 based SMDKV310 evaluation board
+
+SMDKV310 evaluation board is based on Samsung's Exynos4210 SoC.
+
+Required root node properties:
+ - compatible = should be one or more of the following.
+ (a) "samsung,smdkv310" - for Samsung's SMDKV310 eval board.
+ (b) "samsung,exynos4210" - for boards based on Exynos4210 SoC.
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index 68e4ab0c9375..0afcc3b0f870 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -337,6 +337,20 @@ config MACH_SMDK4412
Machine support for Samsung SMDK4412
endif
+comment "Flattened Device Tree based board for Exynos4 based SoC"
+
+config MACH_EXYNOS4_DT
+ bool "Samsung Exynos4 Machine using device tree"
+ select CPU_EXYNOS4210
+ select USE_OF
+ select ARM_AMBA
+ select HAVE_SAMSUNG_KEYPAD if INPUT_KEYBOARD
+ help
+ Machine support for Samsung Exynos4 machine with device tree enabled.
+ Select this if a fdt blob is available for the Exynos4 SoC based board.
+ Note: This is under development and not all peripherals can be supported
+ with this machine file.
+
if ARCH_EXYNOS4
comment "Configuration for HSMMC 8-bit bus width"
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index cb6fb0e8bcaf..8d85ae635ac2 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -37,6 +37,8 @@ obj-$(CONFIG_MACH_ORIGEN) += mach-origen.o
obj-$(CONFIG_MACH_SMDK4212) += mach-smdk4x12.o
obj-$(CONFIG_MACH_SMDK4412) += mach-smdk4x12.o
+obj-$(CONFIG_MACH_EXYNOS4_DT) += mach-exynos4-dt.o
+
# device support
obj-$(CONFIG_ARCH_EXYNOS4) += dev-audio.o
diff --git a/arch/arm/mach-exynos/mach-exynos4-dt.c b/arch/arm/mach-exynos/mach-exynos4-dt.c
new file mode 100644
index 000000000000..85fa02767d67
--- /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