[PATCH 02/04] ARM: shmobile: r8a7790 CA7-SCU enablement
Magnus Damm
magnus.damm at gmail.com
Wed Jan 15 07:26:04 EST 2014
From: Gaku Inami <gaku.inami.xw at bp.renesas.com>
Power on CA7 SCU in case of booting from a CA15 core.
Signed-off-by: Gaku Inami <gaku.inami.xw at bp.renesas.com>
[damm at opensource.se: Converted to use broken out SYSC code]
Signed-off-by: Magnus Damm <damm at opensource.se>
---
arch/arm/mach-shmobile/smp-r8a7790.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- 0001/arch/arm/mach-shmobile/smp-r8a7790.c
+++ work/arch/arm/mach-shmobile/smp-r8a7790.c 2014-01-15 14:34:03.000000000 +0900
@@ -19,6 +19,8 @@
#include <linux/io.h>
#include <asm/smp_plat.h>
#include <mach/common.h>
+#include <mach/pm-rcar.h>
+#include <mach/r8a7790.h>
#define RST 0xe6160000
#define CA15BAR 0x0020
@@ -27,6 +29,11 @@
#define CA7RESCNT 0x0044
#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)
{
void __iomem *p;
@@ -54,6 +61,10 @@ static void __init r8a7790_smp_prepare_c
writel_relaxed((readl_relaxed(p + CA7RESCNT) & ~0x0f) | 0x5a5a0000,
p + CA7RESCNT);
iounmap(p);
+
+ /* turn on power to SCU */
+ r8a7790_pm_init();
+ rcar_sysc_power_up(&r8a7790_ca7_scu);
}
struct smp_operations r8a7790_smp_ops __initdata = {
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