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ARM: shmobile: force enable of r8a7790 arch timer

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Implement a SoC-specific timer init function for
r8a7790 that makes sure the architected timer
is started regardless of boot loader setting.

Signed-off-by: Magnus Damm <damm@opensource.se>
Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Magnus Damm 2013-04-08 10:23:28 +09:00 committed by Simon Horman
parent c9dff05030
commit ab5fdfd5ea
2 changed files with 14 additions and 1 deletions
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1
arch/arm/mach-shmobile/include/mach/r8a7790.h
View File

@ -4,5 +4,6 @@
void r8a7790_add_standard_devices(void);
void r8a7790_clock_init(void);
void r8a7790_pinmux_init(void);
void r8a7790_timer_init(void);
#endif /* __ASM_R8A7790_H__ */

14
arch/arm/mach-shmobile/setup-r8a7790.c
View File

@ -118,6 +118,18 @@ void __init r8a7790_add_standard_devices(void)
r8a7790_register_irqc(0);
}
void __init r8a7790_timer_init(void)
{
void __iomem *cntcr;
/* make sure arch timer is started by setting bit 0 of CNTCT */
cntcr = ioremap(0xe6080000, PAGE_SIZE);
iowrite32(1, cntcr);
iounmap(cntcr);
shmobile_timer_init();
}
#ifdef CONFIG_USE_OF
void __init r8a7790_add_standard_devices_dt(void)
{
@ -132,7 +144,7 @@ static const char *r8a7790_boards_compat_dt[] __initdata = {
DT_MACHINE_START(R8A7790_DT, "Generic R8A7790 (Flattened Device Tree)")
.init_irq = irqchip_init,
.init_machine = r8a7790_add_standard_devices_dt,
.init_time = shmobile_timer_init,
.init_time = r8a7790_timer_init,
.dt_compat = r8a7790_boards_compat_dt,
MACHINE_END
#endif /* CONFIG_USE_OF */