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Commit 689e331f authored by Sekhar Nori's avatar Sekhar Nori
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ARM: davinci: da850: add DT boot support 



Add support for booting DA850 using flattened device
tree to describe the hardware. At this time only the
very basic bootup using a serial console is supported.

Signed-off-by: default avatarSekhar Nori <nsekhar@ti.com>
parent 8e0d72d2

Documentation/devicetree/bindings/arm/davinci.txt

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Texas Instruments DaVinci Platforms Device Tree Bindings

--------------------------------------------------------



Generic DaVinci Boards

----------------------



DA850/OMAP-L138/AM18x generic board

Required root node properties:

    - compatible = "ti,da850";

arch/arm/Kconfig

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@@ -924,6 +924,7 @@ config ARCH_DAVINCI 
	select GENERIC_IRQ_CHIP

	select HAVE_IDE

	select NEED_MACH_GPIO_H

	select USE_OF

	select ZONE_DMA

	help

	  Support for TI's DaVinci platform.

arch/arm/mach-davinci/Kconfig

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@@ -58,6 +58,14 @@ config ARCH_DAVINCI_TNETV107X 


comment "DaVinci Board Type"



config MACH_DA8XX_DT

	bool "Support DA8XX platforms using device tree"

	default y

	depends on ARCH_DAVINCI_DA8XX

	help

	  Say y here to include support for TI DaVinci DA850 based using

	  Flattened Device Tree. More information at Documentation/devicetree



config MACH_DAVINCI_EVM

	bool "TI DM644x EVM"

	default ARCH_DAVINCI_DM644x

arch/arm/mach-davinci/Makefile

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@@ -22,6 +22,7 @@ obj-$(CONFIG_AINTC) += irq.o 
obj-$(CONFIG_CP_INTC)			+= cp_intc.o



# Board specific

obj-$(CONFIG_MACH_DA8XX_DT)		+= da8xx-dt.o

obj-$(CONFIG_MACH_DAVINCI_EVM)  	+= board-dm644x-evm.o

obj-$(CONFIG_MACH_SFFSDR)		+= board-sffsdr.o

obj-$(CONFIG_MACH_NEUROS_OSD2)		+= board-neuros-osd2.o

arch/arm/mach-davinci/da8xx-dt.c

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/*

 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/

 *

 * Modified from mach-omap/omap2/board-generic.c

 *

 * 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/io.h>

#include <linux/of_irq.h>

#include <linux/of_platform.h>

#include <linux/irqdomain.h>



#include <asm/mach/arch.h>



#include <mach/common.h>

#include <mach/cp_intc.h>

#include <mach/da8xx.h>



#define DA8XX_NUM_UARTS	3



void __init da8xx_uart_clk_enable(void)

{

	int i;

	for (i = 0; i < DA8XX_NUM_UARTS; i++)

		davinci_serial_setup_clk(i, NULL);

}



static struct of_device_id da8xx_irq_match[] __initdata = {

	{ .compatible = "ti,cp-intc", .data = cp_intc_of_init, },

	{ }

};



static void __init da8xx_init_irq(void)

{

	of_irq_init(da8xx_irq_match);

}



#ifdef CONFIG_ARCH_DAVINCI_DA850



static void __init da850_init_machine(void)

{

	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);



	da8xx_uart_clk_enable();

}



static const char *da850_boards_compat[] __initdata = {

	"ti,da850",

	NULL,

};



DT_MACHINE_START(DA850_DT, "Generic DA850/OMAP-L138/AM18x")

	.map_io		= da850_init,

	.init_irq	= da8xx_init_irq,

	.timer		= &davinci_timer,

	.init_machine	= da850_init_machine,

	.dt_compat	= da850_boards_compat,

	.init_late	= davinci_init_late,

	.restart	= da8xx_restart,

MACHINE_END



#endif