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>

arch/arm/mach-at91/board-dt.c

@@ -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,

arch/arm/mach-at91/generic.h

@@ -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);

arch/arm/mach-at91/setup.c

@@ -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();