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ARM: OMAP2+: board-generic: Add DT support to generic board

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Re-cycle the original board-generic.c file to support Device Tree
for every OMAP2+ variants.

The current approach is an intermediate step before having only
one machine descriptor that will use some generic DT aware
functions.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Benoit Cousson 2011-09-20 21:24:47 +02:00
parent 295e98c60b
commit 8d61649ddf
2 changed files with 90 additions and 45 deletions
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8
arch/arm/mach-omap2/Kconfig
View File

@ -106,9 +106,13 @@ comment "OMAP Board Type"
depends on ARCH_OMAP2PLUS
config MACH_OMAP_GENERIC
bool "Generic OMAP board"
depends on ARCH_OMAP2
bool "Generic OMAP2+ board"
depends on ARCH_OMAP2PLUS
select USE_OF
default y
help
Support for generic TI OMAP2+ boards using Flattened Device Tree.
More information at Documentation/devicetree
config MACH_OMAP2_TUSB6010
bool

127
arch/arm/mach-omap2/board-generic.c
View File

@ -1,76 +1,117 @@
/*
* linux/arch/arm/mach-omap2/board-generic.c
*
* Copyright (C) 2005 Nokia Corporation
* Author: Paul Mundt <paul.mundt@nokia.com>
*
* Modified from mach-omap/omap1/board-generic.c
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
*
* Code for generic OMAP2 board. Should work on many OMAP2 systems where
* the bootloader passes the board-specific data to the kernel.
* Do not put any board specific code to this file; create a new machine
* type if you need custom low-level initializations.
* Modified from the original mach-omap/omap2/board-generic.c did by Paul
* to support the OMAP2+ device tree boards with an unique board file.
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/of_platform.h>
#include <linux/irqdomain.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/gpio.h>
#include <plat/usb.h>
#include <plat/board.h>
#include <plat/common.h>
#include <mach/omap4-common.h>
static struct omap_board_config_kernel generic_config[] = {
static struct of_device_id omap_dt_match_table[] __initdata = {
{ .compatible = "simple-bus", },
{ .compatible = "ti,omap-infra", },
{ }
};
static void __init omap_generic_init_early(void)
{
omap2_init_common_infrastructure();
}
static struct of_device_id intc_match[] __initdata = {
{ .compatible = "ti,omap3-intc", },
{ .compatible = "arm,cortex-a9-gic", },
{ }
};
static void __init omap_generic_init(void)
{
struct device_node *node = of_find_matching_node(NULL, intc_match);
if (node)
irq_domain_add_simple(node, 0);
omap_serial_init();
omap_sdrc_init(NULL, NULL);
omap_board_config = generic_config;
omap_board_config_size = ARRAY_SIZE(generic_config);
of_platform_populate(NULL, omap_dt_match_table, NULL, NULL);
}
static void __init omap_generic_map_io(void)
{
if (cpu_is_omap242x()) {
omap2_set_globals_242x();
omap242x_map_common_io();
} else if (cpu_is_omap243x()) {
omap2_set_globals_243x();
omap243x_map_common_io();
} else if (cpu_is_omap34xx()) {
omap2_set_globals_3xxx();
omap34xx_map_common_io();
} else if (cpu_is_omap44xx()) {
omap2_set_globals_443x();
omap44xx_map_common_io();
}
}
#if defined(CONFIG_SOC_OMAP2420)
static const char *omap242x_boards_compat[] __initdata = {
"ti,omap2420",
NULL,
};
/* XXX This machine entry name should be updated */
MACHINE_START(OMAP_GENERIC, "Generic OMAP24xx")
/* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
.boot_params = 0x80000100,
DT_MACHINE_START(OMAP242X_DT, "Generic OMAP2420 (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap_generic_map_io,
.init_early = omap_generic_init_early,
.map_io = omap242x_map_io,
.init_early = omap2420_init_early,
.init_irq = omap2_init_irq,
.init_machine = omap_generic_init,
.timer = &omap2_timer,
.dt_compat = omap242x_boards_compat,
MACHINE_END
#endif
#if defined(CONFIG_SOC_OMAP2430)
static const char *omap243x_boards_compat[] __initdata = {
"ti,omap2430",
NULL,
};
DT_MACHINE_START(OMAP243X_DT, "Generic OMAP2430 (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap243x_map_io,
.init_early = omap2430_init_early,
.init_irq = omap2_init_irq,
.init_machine = omap_generic_init,
.timer = &omap2_timer,
.dt_compat = omap243x_boards_compat,
MACHINE_END
#endif
#if defined(CONFIG_ARCH_OMAP3)
static const char *omap3_boards_compat[] __initdata = {
"ti,omap3",
NULL,
};
DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap3430_init_early,
.init_irq = omap3_init_irq,
.init_machine = omap_generic_init,
.timer = &omap3_timer,
.dt_compat = omap3_boards_compat,
MACHINE_END
#endif
#if defined(CONFIG_ARCH_OMAP4)
static const char *omap4_boards_compat[] __initdata = {
"ti,omap4",
NULL,
};
DT_MACHINE_START(OMAP4_DT, "Generic OMAP4 (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap4_map_io,
.init_early = omap4430_init_early,
.init_irq = gic_init_irq,
.init_machine = omap_generic_init,
.timer = &omap4_timer,
.dt_compat = omap4_boards_compat,
MACHINE_END
#endif