![Magnus Damm](/assets/img/avatar_default.png)
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>
453 lines
9 KiB
C
453 lines
9 KiB
C
/*
|
|
* Emma Mobile EV2 processor support
|
|
*
|
|
* Copyright (C) 2012 Magnus Damm
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
#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>
|
|
#include <mach/irqs.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/time.h>
|
|
#include <asm/hardware/gic.h>
|
|
|
|
static struct map_desc emev2_io_desc[] __initdata = {
|
|
#ifdef CONFIG_SMP
|
|
/* 128K entity map for 0xe0100000 (SMU) */
|
|
{
|
|
.virtual = 0xe0100000,
|
|
.pfn = __phys_to_pfn(0xe0100000),
|
|
.length = SZ_128K,
|
|
.type = MT_DEVICE
|
|
},
|
|
/* 2M mapping for SCU + L2 controller */
|
|
{
|
|
.virtual = 0xf0000000,
|
|
.pfn = __phys_to_pfn(0x1e000000),
|
|
.length = SZ_2M,
|
|
.type = MT_DEVICE
|
|
},
|
|
#endif
|
|
};
|
|
|
|
void __init emev2_map_io(void)
|
|
{
|
|
iotable_init(emev2_io_desc, ARRAY_SIZE(emev2_io_desc));
|
|
}
|
|
|
|
/* UART */
|
|
static struct resource uart0_resources[] = {
|
|
[0] = {
|
|
.start = 0xe1020000,
|
|
.end = 0xe1020037,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = 40,
|
|
.flags = IORESOURCE_IRQ,
|
|
}
|
|
};
|
|
|
|
static struct platform_device uart0_device = {
|
|
.name = "serial8250-em",
|
|
.id = 0,
|
|
.num_resources = ARRAY_SIZE(uart0_resources),
|
|
.resource = uart0_resources,
|
|
};
|
|
|
|
static struct resource uart1_resources[] = {
|
|
[0] = {
|
|
.start = 0xe1030000,
|
|
.end = 0xe1030037,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = 41,
|
|
.flags = IORESOURCE_IRQ,
|
|
}
|
|
};
|
|
|
|
static struct platform_device uart1_device = {
|
|
.name = "serial8250-em",
|
|
.id = 1,
|
|
.num_resources = ARRAY_SIZE(uart1_resources),
|
|
.resource = uart1_resources,
|
|
};
|
|
|
|
static struct resource uart2_resources[] = {
|
|
[0] = {
|
|
.start = 0xe1040000,
|
|
.end = 0xe1040037,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = 42,
|
|
.flags = IORESOURCE_IRQ,
|
|
}
|
|
};
|
|
|
|
static struct platform_device uart2_device = {
|
|
.name = "serial8250-em",
|
|
.id = 2,
|
|
.num_resources = ARRAY_SIZE(uart2_resources),
|
|
.resource = uart2_resources,
|
|
};
|
|
|
|
static struct resource uart3_resources[] = {
|
|
[0] = {
|
|
.start = 0xe1050000,
|
|
.end = 0xe1050037,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = 43,
|
|
.flags = IORESOURCE_IRQ,
|
|
}
|
|
};
|
|
|
|
static struct platform_device uart3_device = {
|
|
.name = "serial8250-em",
|
|
.id = 3,
|
|
.num_resources = ARRAY_SIZE(uart3_resources),
|
|
.resource = uart3_resources,
|
|
};
|
|
|
|
/* STI */
|
|
static struct resource sti_resources[] = {
|
|
[0] = {
|
|
.name = "STI",
|
|
.start = 0xe0180000,
|
|
.end = 0xe0180053,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = 157,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device sti_device = {
|
|
.name = "em_sti",
|
|
.id = 0,
|
|
.resource = sti_resources,
|
|
.num_resources = ARRAY_SIZE(sti_resources),
|
|
};
|
|
|
|
|
|
/* GIO */
|
|
static struct gpio_em_config gio0_config = {
|
|
.gpio_base = 0,
|
|
.irq_base = EMEV2_GPIO_IRQ(0),
|
|
.number_of_pins = 32,
|
|
};
|
|
|
|
static struct resource gio0_resources[] = {
|
|
[0] = {
|
|
.name = "GIO_000",
|
|
.start = 0xe0050000,
|
|
.end = 0xe005002b,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.name = "GIO_000",
|
|
.start = 0xe0050040,
|
|
.end = 0xe005005f,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[2] = {
|
|
.start = 99,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
[3] = {
|
|
.start = 100,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device gio0_device = {
|
|
.name = "em_gio",
|
|
.id = 0,
|
|
.resource = gio0_resources,
|
|
.num_resources = ARRAY_SIZE(gio0_resources),
|
|
.dev = {
|
|
.platform_data = &gio0_config,
|
|
},
|
|
};
|
|
|
|
static struct gpio_em_config gio1_config = {
|
|
.gpio_base = 32,
|
|
.irq_base = EMEV2_GPIO_IRQ(32),
|
|
.number_of_pins = 32,
|
|
};
|
|
|
|
static struct resource gio1_resources[] = {
|
|
[0] = {
|
|
.name = "GIO_032",
|
|
.start = 0xe0050080,
|
|
.end = 0xe00500ab,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.name = "GIO_032",
|
|
.start = 0xe00500c0,
|
|
.end = 0xe00500df,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[2] = {
|
|
.start = 101,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
[3] = {
|
|
.start = 102,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device gio1_device = {
|
|
.name = "em_gio",
|
|
.id = 1,
|
|
.resource = gio1_resources,
|
|
.num_resources = ARRAY_SIZE(gio1_resources),
|
|
.dev = {
|
|
.platform_data = &gio1_config,
|
|
},
|
|
};
|
|
|
|
static struct gpio_em_config gio2_config = {
|
|
.gpio_base = 64,
|
|
.irq_base = EMEV2_GPIO_IRQ(64),
|
|
.number_of_pins = 32,
|
|
};
|
|
|
|
static struct resource gio2_resources[] = {
|
|
[0] = {
|
|
.name = "GIO_064",
|
|
.start = 0xe0050100,
|
|
.end = 0xe005012b,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.name = "GIO_064",
|
|
.start = 0xe0050140,
|
|
.end = 0xe005015f,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[2] = {
|
|
.start = 103,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
[3] = {
|
|
.start = 104,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device gio2_device = {
|
|
.name = "em_gio",
|
|
.id = 2,
|
|
.resource = gio2_resources,
|
|
.num_resources = ARRAY_SIZE(gio2_resources),
|
|
.dev = {
|
|
.platform_data = &gio2_config,
|
|
},
|
|
};
|
|
|
|
static struct gpio_em_config gio3_config = {
|
|
.gpio_base = 96,
|
|
.irq_base = EMEV2_GPIO_IRQ(96),
|
|
.number_of_pins = 32,
|
|
};
|
|
|
|
static struct resource gio3_resources[] = {
|
|
[0] = {
|
|
.name = "GIO_096",
|
|
.start = 0xe0050100,
|
|
.end = 0xe005012b,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.name = "GIO_096",
|
|
.start = 0xe0050140,
|
|
.end = 0xe005015f,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[2] = {
|
|
.start = 105,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
[3] = {
|
|
.start = 106,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device gio3_device = {
|
|
.name = "em_gio",
|
|
.id = 3,
|
|
.resource = gio3_resources,
|
|
.num_resources = ARRAY_SIZE(gio3_resources),
|
|
.dev = {
|
|
.platform_data = &gio3_config,
|
|
},
|
|
};
|
|
|
|
static struct gpio_em_config gio4_config = {
|
|
.gpio_base = 128,
|
|
.irq_base = EMEV2_GPIO_IRQ(128),
|
|
.number_of_pins = 31,
|
|
};
|
|
|
|
static struct resource gio4_resources[] = {
|
|
[0] = {
|
|
.name = "GIO_128",
|
|
.start = 0xe0050200,
|
|
.end = 0xe005022b,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.name = "GIO_128",
|
|
.start = 0xe0050240,
|
|
.end = 0xe005025f,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[2] = {
|
|
.start = 107,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
[3] = {
|
|
.start = 108,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device gio4_device = {
|
|
.name = "em_gio",
|
|
.id = 4,
|
|
.resource = gio4_resources,
|
|
.num_resources = ARRAY_SIZE(gio4_resources),
|
|
.dev = {
|
|
.platform_data = &gio4_config,
|
|
},
|
|
};
|
|
|
|
static struct platform_device *emev2_early_devices[] __initdata = {
|
|
&uart0_device,
|
|
&uart1_device,
|
|
&uart2_device,
|
|
&uart3_device,
|
|
};
|
|
|
|
static struct platform_device *emev2_late_devices[] __initdata = {
|
|
&sti_device,
|
|
&gio0_device,
|
|
&gio1_device,
|
|
&gio2_device,
|
|
&gio3_device,
|
|
&gio4_device,
|
|
};
|
|
|
|
void __init emev2_add_standard_devices(void)
|
|
{
|
|
emev2_clock_init();
|
|
|
|
platform_add_devices(emev2_early_devices,
|
|
ARRAY_SIZE(emev2_early_devices));
|
|
|
|
platform_add_devices(emev2_late_devices,
|
|
ARRAY_SIZE(emev2_late_devices));
|
|
}
|
|
|
|
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));
|
|
|
|
/* setup early console here as well */
|
|
shmobile_setup_console();
|
|
}
|
|
|
|
void __init emev2_init_irq(void)
|
|
{
|
|
void __iomem *gic_dist_base;
|
|
void __iomem *gic_cpu_base;
|
|
|
|
/* Static mappings, never released */
|
|
gic_dist_base = ioremap(0xe0028000, PAGE_SIZE);
|
|
gic_cpu_base = ioremap(0xe0020000, PAGE_SIZE);
|
|
BUG_ON(!gic_dist_base || !gic_cpu_base);
|
|
|
|
/* 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 */
|