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ARM: shmobile: r8a7791 SYSC setup code
Add r8a7791 SYSC power management support. Signed-off-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com> Acked-by: Magnus Damm <damm+renesas@opensource.se> [horms+renesas@verge.net.au: rebased] Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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4 changed files with 51 additions and 0 deletions
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@ -53,6 +53,7 @@ obj-$(CONFIG_ARCH_SH73A0) += pm-sh73a0.o
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obj-$(CONFIG_ARCH_R8A7740) += pm-r8a7740.o pm-rmobile.o
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obj-$(CONFIG_ARCH_R8A7779) += pm-r8a7779.o pm-rcar.o
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obj-$(CONFIG_ARCH_R8A7790) += pm-r8a7790.o pm-rcar.o
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obj-$(CONFIG_ARCH_R8A7791) += pm-r8a7791.o pm-rcar.o
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# Board objects
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ifdef CONFIG_ARCH_SHMOBILE_MULTI
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@ -5,6 +5,7 @@ void r8a7791_add_standard_devices(void);
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void r8a7791_add_dt_devices(void);
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void r8a7791_clock_init(void);
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void r8a7791_pinmux_init(void);
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void r8a7791_pm_init(void);
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extern struct smp_operations r8a7791_smp_ops;
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#endif /* __ASM_R8A7791_H__ */
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47
arch/arm/mach-shmobile/pm-r8a7791.c
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47
arch/arm/mach-shmobile/pm-r8a7791.c
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@ -0,0 +1,47 @@
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/*
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* r8a7791 Power management support
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*
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* Copyright (C) 2014 Renesas Electronics Corporation
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* Copyright (C) 2011 Renesas Solutions Corp.
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* Copyright (C) 2011 Magnus Damm
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <asm/io.h>
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#include <linux/kernel.h>
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#include <mach/r8a7791.h>
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#include "pm-rcar.h"
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/* SYSC */
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#define SYSCIER 0x0c
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#define SYSCIMR 0x10
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#if defined(CONFIG_SMP)
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static void __init r8a7791_sysc_init(void)
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{
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void __iomem *base = rcar_sysc_init(0xe6180000);
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/* enable all interrupt sources, but do not use interrupt handler */
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iowrite32(0x0131000e, base + SYSCIER);
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iowrite32(0, base + SYSCIMR);
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}
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#else /* CONFIG_SMP */
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static inline void r8a7791_sysc_init(void) {}
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#endif /* CONFIG_SMP */
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void __init r8a7791_pm_init(void)
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{
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static int once;
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if (once++)
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return;
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r8a7791_sysc_init();
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}
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@ -50,6 +50,8 @@ static void __init r8a7791_smp_prepare_cpus(unsigned int max_cpus)
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writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) | 0xa5a50000,
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p + CA15RESCNT);
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iounmap(p);
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r8a7791_pm_init();
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}
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static int r8a7791_smp_boot_secondary(unsigned int cpu,
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