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Commit 58202033 authored by Linus Walleij's avatar Linus Walleij
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ARM: ux500: get SCU base from device tree 



The SMP startup/shutdown code relied on a static SCU base
address, let's get this from the device tree instead.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 80757f23

arch/arm/mach-ux500/platsmp.c

+8 −1
Original line number Diff line number Diff line
@@ -16,6 +16,8 @@ 
#include <linux/device.h>

#include <linux/smp.h>

#include <linux/io.h>

#include <linux/of.h>

#include <linux/of_address.h>



#include <asm/cacheflush.h>

#include <asm/smp_plat.h>
@@ -122,8 +124,13 @@ static void __init wakeup_secondary(void) 
static void __init ux500_smp_init_cpus(void)

{

	unsigned int i, ncores;

	struct device_node *np;



	scu_base = ioremap(U8500_SCU_BASE, 0x100);

	np = of_find_compatible_node(NULL, NULL, "arm,cortex-a9-scu");

	scu_base = of_iomap(np, 0);

	of_node_put(np);

	if (!scu_base)

		return;

	backupram = ioremap(U8500_BACKUPRAM0_BASE, SZ_8K);

	ncores = scu_get_core_count(scu_base);