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mach-shmobile: Emma Mobile EV2 DT support V3

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This is EMEV2 DT support V3. The support is limited to
whatever devices that are complied in the kernel. At this
point we have UARTs handled by "em-uart" and a timer
handled by "em-sti". Clocks and SMP are not supported.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Magnus Damm 2012-05-16 15:45:54 +09:00 committed by Rafael J. Wysocki
parent 0c73f7bc12
commit 3d5de27174
3 changed files with 114 additions and 1 deletions
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63
arch/arm/boot/dts/emev2.dtsi Normal file
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@ -0,0 +1,63 @@
/*
* Device Tree Source for the EMEV2 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,emev2";
interrupt-parent = <&gic>;
cpus {
cpu@0 {
compatible = "arm,cortex-a9";
};
cpu@1 {
compatible = "arm,cortex-a9";
};
};
gic: interrupt-controller@e0020000 {
compatible = "arm,cortex-a9-gic";
interrupt-controller;
#interrupt-cells = <3>;
reg = <0xe0028000 0x1000>,
<0xe0020000 0x0100>;
};
sti@e0180000 {
compatible = "renesas,em-sti";
reg = <0xe0180000 0x54>;
interrupts = <0 125 0>;
};
uart@e1020000 {
compatible = "renesas,em-uart";
reg = <0xe1020000 0x38>;
interrupts = <0 8 0>;
};
uart@e1030000 {
compatible = "renesas,em-uart";
reg = <0xe1030000 0x38>;
interrupts = <0 9 0>;
};
uart@e1040000 {
compatible = "renesas,em-uart";
reg = <0xe1040000 0x38>;
interrupts = <0 10 0>;
};
uart@e1050000 {
compatible = "renesas,em-uart";
reg = <0xe1050000 0x38>;
interrupts = <0 11 0>;
};
};

5
arch/arm/mach-shmobile/clock-emev2.c
View File

@ -191,10 +191,15 @@ static int __init emev2_sclkdiv_register(struct clk *clks, int nr)
static struct clk_lookup lookups[] = {
CLKDEV_DEV_ID("serial8250-em.0", &gclk_clks[GCLK_USIAU0_SCLK]),
CLKDEV_DEV_ID("e1020000.uart", &gclk_clks[GCLK_USIAU0_SCLK]),
CLKDEV_DEV_ID("serial8250-em.1", &gclk_clks[GCLK_USIBU1_SCLK]),
CLKDEV_DEV_ID("e1030000.uart", &gclk_clks[GCLK_USIBU1_SCLK]),
CLKDEV_DEV_ID("serial8250-em.2", &gclk_clks[GCLK_USIBU2_SCLK]),
CLKDEV_DEV_ID("e1040000.uart", &gclk_clks[GCLK_USIBU2_SCLK]),
CLKDEV_DEV_ID("serial8250-em.3", &gclk_clks[GCLK_USIBU3_SCLK]),
CLKDEV_DEV_ID("e1050000.uart", &gclk_clks[GCLK_USIBU3_SCLK]),
CLKDEV_DEV_ID("em_sti.0", &gclk_clks[GCLK_STI_SCLK]),
CLKDEV_DEV_ID("e0180000.sti", &gclk_clks[GCLK_STI_SCLK]),
};
void __init emev2_clock_init(void)

47
arch/arm/mach-shmobile/setup-emev2.c
View File

@ -22,9 +22,11 @@
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/platform_data/gpio-em.h>
#include <linux/of_platform.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/io.h>
#include <linux/of_irq.h>
#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/emev2.h>
@ -381,9 +383,14 @@ void __init emev2_add_standard_devices(void)
ARRAY_SIZE(emev2_late_devices));
}
void __init emev2_add_early_devices(void)
void __init emev2_init_delay(void)
{
shmobile_setup_delay(533, 1, 3); /* Cortex-A9 @ 533MHz */
}
void __init emev2_add_early_devices(void)
{
emev2_init_delay();
early_platform_add_devices(emev2_early_devices,
ARRAY_SIZE(emev2_early_devices));
@ -405,3 +412,41 @@ void __init emev2_init_irq(void)
/* Use GIC to handle interrupts */
gic_init(0, 29, gic_dist_base, gic_cpu_base);
}
#ifdef CONFIG_USE_OF
static const struct of_dev_auxdata emev2_auxdata_lookup[] __initconst = {
{ }
};
void __init emev2_add_standard_devices_dt(void)
{
of_platform_populate(NULL, of_default_bus_match_table,
emev2_auxdata_lookup, NULL);
}
static const struct of_device_id emev2_dt_irq_match[] = {
{ .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
{},
};
static const char *emev2_boards_compat_dt[] __initdata = {
"renesas,emev2",
NULL,
};
void __init emev2_init_irq_dt(void)
{
of_irq_init(emev2_dt_irq_match);
}
DT_MACHINE_START(EMEV2_DT, "Generic Emma Mobile EV2 (Flattened Device Tree)")
.init_early = emev2_init_delay,
.nr_irqs = NR_IRQS_LEGACY,
.init_irq = emev2_init_irq_dt,
.handle_irq = gic_handle_irq,
.init_machine = emev2_add_standard_devices_dt,
.timer = &shmobile_timer,
.dt_compat = emev2_boards_compat_dt,
MACHINE_END
#endif /* CONFIG_USE_OF */