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>

3 files changed, 20 insertions, 7 deletions

diff --git a/arch/arm/mach-at91/board-dt.c b/arch/arm/mach-at91/board-dt.c
index 9f729d6c894..c18d4d30780 100644
--- a/arch/arm/mach-at91/board-dt.c
+++ b/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,
diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index 459f01a4a54..d5f5083880f 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/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);
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 372396c2ecb..c0bd5a62569 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/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();