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ARM: shmobile: r8a7790 CA7-SCU enablement 

Power on CA7 SCU in case of booting from a CA15 core.

Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com>
[damm@opensource.se: Converted to use broken out SYSC code]
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Gaku Inami 2014-01-15 21:26:04 +09:00 committed by Simon Horman
parent a48f165509
commit 0445ded61a
1 changed files with 11 additions and 0 deletions
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11
arch/arm/mach-shmobile/smp-r8a7790.c
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@ -19,6 +19,8 @@
#include <linux/io.h> #include <linux/io.h>
#include <asm/smp_plat.h> #include <asm/smp_plat.h>
#include <mach/common.h> #include <mach/common.h>
#include <mach/pm-rcar.h>
#include <mach/r8a7790.h>
#define RST 0xe6160000 #define RST 0xe6160000
#define CA15BAR 0x0020 #define CA15BAR 0x0020
@ -27,6 +29,11 @@
#define CA7RESCNT 0x0044 #define CA7RESCNT 0x0044
#define MERAM 0xe8080000 #define MERAM 0xe8080000
static struct rcar_sysc_ch r8a7790_ca7_scu = {
.chan_offs = 0x100, /* PWRSR3 .. PWRER3 */
.isr_bit = 21, /* CA7-SCU */
};
static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus) static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus)
{ {
void __iomem *p; void __iomem *p;
@ -54,6 +61,10 @@ static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus)
writel_relaxed((readl_relaxed(p + CA7RESCNT) & ~0x0f) | 0x5a5a0000, writel_relaxed((readl_relaxed(p + CA7RESCNT) & ~0x0f) | 0x5a5a0000,
p + CA7RESCNT); p + CA7RESCNT);
iounmap(p); iounmap(p);
/* turn on power to SCU */
r8a7790_pm_init();
rcar_sysc_power_up(&r8a7790_ca7_scu);
} }
struct smp_operations r8a7790_smp_ops __initdata = { struct smp_operations r8a7790_smp_ops __initdata = {