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ARM i.MX31: Add devicetree support

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This patch adds basic devicetree support for i.MX31 based SoCs.

Only the UART and interrupts bindings are added.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Denis 'GNUtoo' Carikli
2012-07-09 21:39:12 +02:00
committed by Sascha Hauer
parent 5349f2a89e
commit d2a37b3d91
6 changed files with 180 additions and 0 deletions
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63
arch/arm/mach-imx/imx31-dt.c Normal file
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/*
* Copyright 2012 Sascha Hauer, Pengutronix
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/irq.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <mach/common.h>
#include <mach/mx31.h>
static const struct of_dev_auxdata imx31_auxdata_lookup[] __initconst = {
OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART1_BASE_ADDR,
"imx21-uart.0", NULL),
OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART2_BASE_ADDR,
"imx21-uart.1", NULL),
OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART3_BASE_ADDR,
"imx21-uart.2", NULL),
OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART4_BASE_ADDR,
"imx21-uart.3", NULL),
OF_DEV_AUXDATA("fsl,imx31-uart", MX31_UART5_BASE_ADDR,
"imx21-uart.4", NULL),
{ /* sentinel */ }
};
static void __init imx31_dt_init(void)
{
of_platform_populate(NULL, of_default_bus_match_table,
imx31_auxdata_lookup, NULL);
}
static void __init imx31_timer_init(void)
{
mx31_clocks_init_dt();
}
static struct sys_timer imx31_timer = {
.init = imx31_timer_init,
};
static const char *imx31_dt_board_compat[] __initdata = {
"fsl,imx31",
NULL
};
DT_MACHINE_START(IMX31_DT, "Freescale i.MX31 (Device Tree Support)")
.map_io = mx31_map_io,
.init_early = imx31_init_early,
.init_irq = mx31_init_irq,
.handle_irq = imx31_handle_irq,
.timer = &imx31_timer,
.init_machine = imx31_dt_init,
.dt_compat = imx31_dt_board_compat,
.restart = mxc_restart,
MACHINE_END