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ARM: at91/dt: add specific DT soc init 

This will allow to have static Device mapping and DT probe mapping for the
System Controller.

Temporary keep the call to ioremap_registers() until we have the binding
for the SDRAM/DDR Controller.

Temporary keep the main clock hardcoded to 12MHz until we have the binding
for the PMC.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD 2012-02-28 13:57:51 +08:00
parent 8bf7ec6508
commit 2b11ea5bf2
3 changed files with 20 additions and 7 deletions
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8
arch/arm/mach-at91/board-dt.c
View File

@ -30,12 +30,6 @@
#include "generic.h"
static void __init ek_init_early(void)
{
/* Initialize processor: 12.000 MHz crystal */
at91_initialize(12000000);
}
static const struct of_device_id irq_of_match[] __initconst = {
{ .compatible = "atmel,at91rm9200-aic", .data = at91_aic_of_init },
@ -65,7 +59,7 @@ DT_MACHINE_START(at91sam_dt, "Atmel AT91SAM (Device Tree)")
/* Maintainer: Atmel */
.timer = &at91sam926x_timer,
.map_io = at91_map_io,
.init_early = ek_init_early,
.init_early = at91_dt_initialize,
.init_irq = at91_dt_init_irq,
.init_machine = at91_dt_device_init,
.dt_compat = at91_dt_board_compat,

1
arch/arm/mach-at91/generic.h
View File

@ -20,6 +20,7 @@ extern void __init at91_init_sram(int bank, unsigned long base,
extern void __init at91rm9200_set_type(int type);
extern void __init at91_initialize(unsigned long main_clock);
extern void __init at91x40_initialize(unsigned long main_clock);
extern void __init at91_dt_initialize(void);
/* Interrupts */
extern void __init at91_init_irq_default(void);

18
arch/arm/mach-at91/setup.c
View File

@ -9,6 +9,7 @@
#include <linux/io.h>
#include <linux/mm.h>
#include <linux/pm.h>
#include <linux/of_address.h>
#include <asm/mach/map.h>
@ -285,6 +286,23 @@ void __init at91_ioremap_matrix(u32 base_addr)
panic("Impossible to ioremap at91_matrix_base\n");
}
#if defined(CONFIG_OF)
void __init at91_dt_initialize(void)
{
/* temporary until have the ramc binding*/
at91_boot_soc.ioremap_registers();
/* temporary until have the pmc binding */
/* Init clock subsystem */
at91_clock_init(12000000);
/* Register the processor-specific clocks */
at91_boot_soc.register_clocks();
at91_boot_soc.init();
}
#endif
void __init at91_initialize(unsigned long main_clock)
{
at91_boot_soc.ioremap_registers();