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ARM: mach-shmobile: sh7372 generic board support via DT V2

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Add generic DT board support for the sh7372 SoC V2.

SCIF serial ports and timers are kept as regular
platform devices. Other on-chip and on-board devices
should be configured via the device tree.

Tested on the mackerel board via kexec using a zImage
kernel with an appended dtb.

At this point there is no interrupt controller support
in place but such code will be added over time when
proper IRQ domain support has been added to INTC.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Magnus Damm 2012-03-28 15:53:40 +09:00 committed by Rafael J. Wysocki
parent 012f825f13
commit 3b7b70552a
2 changed files with 69 additions and 0 deletions
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21
arch/arm/boot/dts/sh7372.dtsi Normal file
View File

@ -0,0 +1,21 @@
/*
* Device Tree Source for the sh7372 SoC
*
* Copyright (C) 2012 Renesas Solutions Corp.
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
/include/ "skeleton.dtsi"
/ {
compatible = "renesas,sh7372";
cpus {
cpu@0 {
compatible = "arm,cortex-a8";
};
};
};

48
arch/arm/mach-shmobile/setup-sh7372.c
View File

@ -22,6 +22,7 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/of_platform.h>
#include <linux/uio_driver.h>
#include <linux/delay.h>
#include <linux/input.h>
@ -1092,3 +1093,50 @@ void __init sh7372_add_early_devices(void)
/* override timer setup with soc-specific code */
shmobile_timer.init = sh7372_earlytimer_init;
}
#ifdef CONFIG_USE_OF
void __init sh7372_add_early_devices_dt(void)
{
shmobile_setup_delay(800, 1, 3); /* Cortex-A8 @ 800MHz */
early_platform_add_devices(sh7372_early_devices,
ARRAY_SIZE(sh7372_early_devices));
/* setup early console here as well */
shmobile_setup_console();
}
static const struct of_dev_auxdata sh7372_auxdata_lookup[] __initconst = {
{ }
};
void __init sh7372_add_standard_devices_dt(void)
{
/* clocks are setup late during boot in the case of DT */
sh7372_clock_init();
platform_add_devices(sh7372_early_devices,
ARRAY_SIZE(sh7372_early_devices));
of_platform_populate(NULL, of_default_bus_match_table,
sh7372_auxdata_lookup, NULL);
}
static const char *sh7372_boards_compat_dt[] __initdata = {
"renesas,sh7372",
NULL,
};
DT_MACHINE_START(SH7372_DT, "Generic SH7372 (Flattened Device Tree)")
.map_io = sh7372_map_io,
.init_early = sh7372_add_early_devices_dt,
.nr_irqs = NR_IRQS_LEGACY,
.init_irq = sh7372_init_irq,
.handle_irq = shmobile_handle_irq_intc,
.init_machine = sh7372_add_standard_devices_dt,
.timer = &shmobile_timer,
.dt_compat = sh7372_boards_compat_dt,
MACHINE_END
#endif /* CONFIG_USE_OF */